STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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(HPA) ****** ****** ****** ****** ****** 21.94 24.65 21.90 16.13 8.31 3.76 2.34 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** 35 38 45 48 61 68 77 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** 62 65 67 77 84 84 90 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** 20 24 31 32 45 51 63 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** 62 65 66 77 84 82 89 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** 26 30 37 39 52 64 71 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** 24 30 37 38 53 63 71 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** 2.0 2.0 0.0 1.2 23.8 7.6 33.6 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** 0 0 0 0 1 0 0 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** 0 0 0 0 1 0 3 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** 1 1 0 1 7 3 10 **** DAYS WITH PRECIPITATION **** **** **** **** **** 1 1 0 2 8 5 12 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** 2.0 2.0 0.0 1.0 10.0 4.0 8.0 ****** DAY ** ** ** ** ** 7 24 ** 17 31 25 10 DAY WITH THUNDER STORM **** **** **** **** **** 0 0 0 0 0 0 0 **** DAYS WITH SNOW OR SLEET **** **** **** **** **** 0 0 0 0 0 0 6 **** DAYS WITH DUST **** **** **** **** **** 0 1 2 4 0 0 0 **** WIND DIRECTION (PREVAILING) *** *** *** *** *** 225 225 225 225 225 315 315 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** 8.5 7.3 6.4 9.3 8.9 6.5 6.8 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** 21.3 18.7 16.1 19.3 27.7 17.3 8.4 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** 53.3 54.8 45.2 46.7 42.6 44.7 67.7 ***** NO. OF WIND OBSERVATION **** **** **** **** **** 150 155 155 150 155 150 155 1070 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** 222 232 133 231 242 267 243 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** 2.5 1.6 0.8 2.5 3.6 1.7 0.7 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** 62.5 45.7 18.2 52.1 70.6 45.9 25.9 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** 4.0 3.5 4.4 4.8 5.1 3.7 2.7 **** FASTEST WIND DIRECTION *** *** *** *** *** 210 220 90 260 240 290 260 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** 20 15 20 25 20 15 20 *** DAY ** ** ** ** ** 12 18 3 28 3 3 4 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** 29 27 22 29 15 14 6 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** 1 4 9 1 12 13 11 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** 0 0 0 0 4 3 14 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** 0 0 0 0 0 3 4 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. 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QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 824.4 820.7 823.5 826.4 827.4 830.3 827.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 827.2 823.8 825.8 829.7 832.5 835.8 835.3 ****** DAY ** ** ** ** ** 13 6 27 11 6 15 14 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 821.1 818.3 821.0 823.4 823.7 821.9 818.2 ****** DAY ** ** ** ** ** 6 20 20 2 26 28 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1017.2 1012.8 1016.2 1019.6 1020.8 1024.3 1021.2 ****** MAX. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 999.1 994.7 995.0 1004.4 1008.8 1014.2 1005.0 ****** DAY ** ** ** ** ** 29 17 1 2 17 25 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 824.5 820.7 823.6 826.4 827.6 830.8 828.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 828.5 824.0 825.6 829.7 832.5 836.2 835.6 ****** DAY ** ** ** ** ** 13 6 27 11 6 15 14 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 820.9 818.1 821.0 823.2 823.6 821.6 818.2 ****** DAY ** ** ** ** ** 6 20 1 1 26 28 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1017.4 1012.9 1016.3 1019.6 1021.0 1024.8 1021.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1022.1 1016.8 1018.7 1023.5 1026.8 1031.2 1030.5 ****** DAY ** ** ** ** ** 13 6 27 11 6 15 14 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1013.1 1009.8 1013.2 1015.8 1016.3 1013.9 1009.9 ****** DAY ** ** ** ** ** 6 20 1 1 26 28 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 824.0 820.2 823.0 825.9 826.9 830.4 827.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 827.0 823.2 825.0 829.1 832.7 839.1 834.6 ****** DAY ** ** ** ** ** 13 22 28 30 31 11 14 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 820.4 817.4 820.3 822.9 823.1 820.6 817.2 ****** DAY ** ** ** ** ** 5 20 1 2 26 28 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1016.7 1012.2 1015.6 1019.1 1020.2 1024.3 1020.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1020.3 1015.8 1018.0 1022.8 1027.1 1034.7 1029.3 ****** DAY ** ** ** ** ** 13 22 28 30 31 11 14 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1012.5 1008.9 1012.4 1015.5 1015.7 1012.7 1008.7 ****** DAY ** ** ** ** ** 5 20 1 2 26 28 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 823.0 819.2 822.1 824.6 826.1 829.2 826.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 826.0 823.0 824.3 827.8 832.4 835.0 833.9 ****** DAY ** ** ** ** ** 13 22 20 29 31 13 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 819.2 816.6 819.5 821.5 822.6 818.8 817.0 ****** DAY ** ** ** ** ** 6 3 1 2 26 28 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1015.5 1011.0 1014.5 1017.5 1019.3 1022.9 1020.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1019.1 1015.6 1017.1 1021.3 1026.7 1029.8 1028.5 ****** DAY ** ** ** ** ** 13 22 20 29 31 13 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1011.1 1008.0 1011.4 1013.8 1015.1 1010.6 1008.5 ****** DAY ** ** ** ** ** 6 3 1 2 26 28 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 822.5 819.0 821.8 824.5 825.8 828.9 826.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 824.8 822.8 824.0 827.8 832.3 834.8 834.1 ****** DAY ** ** ** ** ** 25 22 6 29 31 1 16 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 818.4 816.6 819.5 821.3 822.0 818.8 817.0 ****** DAY ** ** ** ** ** 6 3 1 2 26 28 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1015.0 1010.8 1014.2 1017.4 1018.9 1022.6 1019.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1017.7 1015.3 1016.8 1021.3 1026.6 1029.6 1028.7 ****** DAY ** ** ** ** ** 25 22 6 29 31 1 16 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.1 1008.0 1011.4 1013.6 1014.4 1010.6 1008.5 ****** DAY ** ** ** ** ** 6 3 1 2 26 28 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1002.4 996.1 1000.0 1007.5 1012.8 1022.2 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.4 1003.4 1005.3 1013.8 1026.3 1030.0 1030.6 ****** DAY ** ** ** ** ** 13 22 26 29 31 1 13 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.3 993.0 992.8 1001.7 1006.0 1011.1 1007.1 ****** DAY ** ** ** ** ** 29 19 1 2 26 28 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -7.4 -1.5 9.6 12.3 17.5 24.2 28.2 26.9 21.4 11.4 5.5 0.8 12.4 MINIMUN AIR TEMPERATURE (C) -13.9 -8.9 2.5 5.4 8.7 11.2 13.7 11.9 5.4 3.3 -1.9 -4.1 2.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 28 21 1 0 0 0 0 0 0 1 9 17 77 DAYS WITH FREEZING MIN.<= 0 31 27 12 1 0 0 0 0 0 7 24 25 127 TEMPERATURE RECORDS LOWEST(C) -29.0 -25.0 -4.0 0.0 2.0 8.0 8.0 6.0 1.0 -4.0 -6.0 -13.0 -29.0 DAY 26 3 28 26 19 1 3 30 19 28 28 16 MAXIMUM AIR TEMPERATURE (C) -2.7 4.9 16.1 17.3 23.1 30.5 35.5 33.9 29.6 19.1 12.8 6.1 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 31 29 16 1 0 0 97 DAYS WITH MAXIMUM TEMP. <= 0 21 3 0 0 0 0 0 0 0 0 0 2 26 TEMPERATURE RECORDS HIGHEST(C) 4.0 18.0 22.0 23.0 29.0 35.0 40.0 37.0 32.0 30.0 16.0 16.0 40.0 DAY 29 28 21 28 13 26 15 4 14 2 4 4 DIF. BETWEEN (MAX.-MIN.) (C) 11.2 13.8 13.6 11.9 14.4 19.3 21.8 22.0 24.2 15.8 14.7 10.2 16.0 MEAN DAILY TEMP. (MDT) (C) -8.3 -2.0 9.3 11.3 15.9 20.8 24.6 22.9 17.5 11.2 5.5 1.0 10.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 22.0 113.5 72.5 0.0 0.0 0.0 0.0 208.0 HEATING DEG. DAYS(BASE 18 0C) 815.5 560.5 271.0 200.0 70.5 4.5 0.0 3.5 21.5 210.0 376.0 527.5 3060.5 DEWPOINT (MEAN C) -9.9 -5.5 -0.3 1.7 6.4 8.4 8.1 10.3 6.2 4.1 0.2 -3.8 2.2 MIXING RATIO (G/KG) 2.46 3.31 4.78 5.48 7.50 8.70 8.70 9.93 7.43 6.43 4.81 3.62 6.10 VAPOUR PRESSURE (HPA) 3.24 4.39 6.30 7.18 9.83 11.33 11.28 12.92 9.76 8.46 6.34 4.78 7.98 SATURATION DEF. (HPA) 0.65 1.80 6.28 7.76 11.07 20.54 29.38 25.60 18.30 6.47 3.22 2.14 11.10 RELATIVE HUMIDITY (MEAN %) 83 76 55 54 52 41 33 41 42 65 71 75 57 RELATIVE HUMIDITY (MAX. %) 90 89 80 77 81 69 61 73 73 86 92 90 80 RELATIVE HUMIDITY (MIN. %) 76 63 37 39 36 27 19 25 24 44 47 56 41 RELATIVE HUMIDITY (MEAN% 03UTC) 88 87 77 77 80 69 61 73 73 84 90 85 79 RELATIVE HUMIDITY (MEAN% 09UTC) 80 72 42 44 40 30 24 30 29 53 53 64 47 RELATIVE HUMIDITY (MEAN% 15UTC) 83 71 51 48 47 32 24 30 28 57 62 71 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 60.0 15.0 60.0 63.2 60.0 2.0 0.0 8.0 0.0 79.2 40.0 63.5 450.9 DAYS WITH PRECIPITATION >=10 1 0 1 3 2 0 0 0 0 3 1 2 13 DAYS WITH PRECIPITATION >= 5 5 1 2 4 6 0 0 0 0 5 4 3 30 DAYS WITH PRECIPITATION >= 1 12 4 10 9 11 2 0 2 0 9 5 6 70 DAYS WITH PRECIPITATION 15 4 10 11 12 2 1 2 0 11 5 9 82 GREATEST DAILY PRECIPITATION 27.0 6.0 39.0 21.0 14.0 1.0 0.0 4.0 0.0 26.0 17.0 25.0 39.0 DAY 13 9 4 1 24 5 ** 29 ** 26 12 14 DAY WITH THUNDER STORM 1 0 0 1 3 0 0 0 0 5 0 1 11 DAYS WITH SNOW OR SLEET 12 3 1 0 0 0 0 0 0 1 1 4 22 DAYS WITH DUST 0 0 0 3 3 3 10 8 4 2 1 0 34 WIND DIRECTION (PREVAILING) 90 270 225 225 225 270 225 90 225 225 315 225 225 PREVAILING WIND SPEED(KNOTS) 15.3 10.4 10.9 11.8 9.0 8.1 8.7 10.2 8.1 10.7 7.6 9.3 9.7 PREVAILING WIND PERCENT 7.7 5.7 18.1 19.3 19.4 14.0 11.0 7.1 6.5 16.1 5.8 13.3 10.6 CALMS PERCENT OF WIND 87.1 88.6 56.8 52.0 45.8 62.0 65.2 65.8 79.4 58.5 76.7 70.2 67.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 170 248 240 248 2121 VECTOR WIND DIRECTION (MEAN) 82 277 189 220 246 260 159 171 220 222 276 224 222 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.4 3.3 3.4 2.9 2.4 0.6 0.6 0.8 2.2 0.5 1.6 1.3 WIND STEADINESES (MEAN %) 56.3 44.4 68.7 64.2 60.4 80.0 18.2 19.4 50.0 61.1 29.4 57.1 43.3 WIND SPEED (MEAN KNOTS) 1.6 0.9 4.8 5.3 4.8 3.0 3.3 3.1 1.6 3.6 1.7 2.8 3.0 FASTEST WIND DIRECTION 90 270 90 240 240 280 90 80 270 180 280 180 240 FASTEST WIND SPEED (KNOTS) 25 20 22 30 20 15 22 15 15 25 16 26 30 DAY 6 25 10 13 6 3 6 4 15 17 18 5 DAYS WITH SKY CLEAR (0-2)/8 9 19 11 10 11 27 29 28 26 11 19 9 209 DAYS WITH P.CLOUDY (3-6)/8 9 7 12 10 18 3 2 3 4 15 8 16 107 DAYS WITH CLOUDY (7-8)/8 13 2 8 10 2 0 0 0 0 5 3 6 49 DAYS WITH VISIBILITY =< 2 KM 13 10 2 3 0 0 0 0 0 6 2 6 42 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.0 828.8 826.8 823.2 824.9 822.2 819.2 822.9 826.9 827.5 827.4 825.9 825.0 MAX. QFE PRESSURE IN HPA 830.4 835.5 833.0 828.2 830.0 828.7 823.5 828.8 832.1 833.0 835.6 835.2 835.6 DAY-HOUR 11- 6 15- 6 9- 9 1- 6 29- 3 7- 6 13- 6 23- 6 28- 6 23- 6 27- 6 18- 6 MIN. QFE PRESSURE IN HPA 817.9 817.6 821.6 815.0 818.0 817.6 815.0 818.0 821.5 821.9 819.0 819.4 815.0 DAY-HOUR 8- 3 7- 9 26-15 24- 9 19-15 27-15 29-15 6-15 3-15 17-12 12- 0 22- 3 MEAN QNH PRESSURE IN HPA 1016.7 1022.5 1020.1 1015.8 1017.9 1014.7 1011.0 1015.5 1020.2 1020.9 1020.8 1019.1 1017.9 MAX. QNH PRESSURE IN HPA 1024.4 1030.4 1027.4 1021.8 1023.9 1022.3 1016.2 1022.5 1026.4 1027.4 1030.5 1030.1 1030.5 DAY-HOUR 11- 6 15- 6 9- 9 1- 6 29- 3 7- 6 13- 6 23- 6 28- 6 23- 6 27- 6 18- 6 MIN. QNH PRESSURE IN HPA 1009.5 1009.2 1013.9 1006.1 1009.7 1009.2 1006.1 1009.7 1013.8 1014.3 1010.8 1011.3 1006.1 DAY-HOUR 8- 3 7- 9 26-15 24- 9 19-15 27-15 29-15 6-15 3-15 17-12 12- 0 22- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.8 1019.2 1021.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.1 1032.1 1035.6 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** 24- 3 27- 6 18-15 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.3 1005.4 1007.0 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** 5- 9 12- 0 5-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 827.6 827.3 825.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 831.5 833.7 832.9 ****** DAY ** ** ** ** ** ** ** ** ** 20 27 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 822.7 819.0 820.4 ****** DAY ** ** ** ** ** ** ** ** ** 26 12 22 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.0 1020.7 1018.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.7 1028.3 1027.3 ****** DAY ** ** ** ** ** ** ** ** ** 20 27 18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.2 1010.8 1012.5 ****** DAY ** ** ** ** ** ** ** ** ** 26 12 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.2 1018.4 1020.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.3 1027.7 1031.2 ****** DAY ** ** ** ** ** ** ** ** ** 24 28 19 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1005.6 1005.4 1008.7 ****** DAY ** ** ** ** ** ** ** ** ** 17 12 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.3 829.0 827.1 823.5 825.4 822.9 819.9 823.7 827.1 827.9 827.7 825.8 825.4 MAX. QFE PRESSURE IN HPA 829.9 835.1 831.0 827.9 830.0 828.3 823.1 827.2 831.5 831.0 834.1 833.3 835.1 DAY 11 15 15 2 29 6 21 23 28 23 27 18 MIN. QFE PRESSURE IN HPA 817.9 819.9 822.5 816.2 819.9 819.9 817.2 820.2 823.5 822.3 819.7 819.4 816.2 DAY 8 7 27 24 19 30 30 17 6 26 12 22 MEAN QNH PRESSURE IN HPA 1017.1 1022.7 1020.5 1016.2 1018.5 1015.5 1011.9 1016.4 1020.5 1021.4 1021.2 1018.9 1018.4 MAX. QNH PRESSURE IN HPA 1023.8 1029.9 1025.1 1021.4 1023.9 1021.9 1015.7 1020.6 1025.7 1025.1 1028.7 1027.8 1029.9 DAY 11 15 15 2 29 6 21 23 28 23 27 18 MIN. QNH PRESSURE IN HPA 1009.5 1011.9 1015.0 1007.5 1011.9 1011.9 1008.7 1012.3 1016.2 1014.8 1011.7 1011.3 1007.5 DAY 8 7 27 24 19 30 30 17 6 26 12 22 MEAN QFF PRESSURE IN HPA 1027.7 1029.3 1017.8 1011.6 1010.5 1003.4 996.6 1002.2 1010.2 1016.6 1021.2 1021.9 1014.1 MAX. QFF PRESSURE IN HPA 1043.3 1043.2 1026.4 1020.2 1014.7 1011.2 999.4 1009.1 1016.0 1026.1 1029.7 1035.1 1043.3 DAY 26 3 6 2 29 6 13 30 28 24 27 18 MIN. QFF PRESSURE IN HPA 1015.0 1013.0 1011.4 999.9 1006.0 998.1 993.2 997.1 1005.3 1007.7 1008.0 1009.7 993.2 DAY 20 7 27 24 18 30 28 5 6 11 12 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 824.7 829.3 827.3 823.8 825.6 823.0 820.2 824.0 827.8 828.7 828.6 826.6 825.8 MAX. QFE PRESSURE IN HPA 830.4 835.5 831.5 828.2 829.4 828.7 823.5 828.8 832.1 833.0 835.6 835.2 835.6 DAY 11 15 15 1 29 7 13 23 28 23 27 18 MIN. QFE PRESSURE IN HPA 818.9 820.4 822.5 816.1 820.0 819.9 817.7 820.2 823.7 823.3 820.7 820.0 816.1 DAY 20 7 4 24 19 22 30 17 16 26 12 22 MEAN QNH PRESSURE IN HPA 1017.5 1023.1 1020.7 1016.5 1018.6 1015.6 1012.2 1016.8 1021.3 1022.3 1022.2 1019.9 1018.9 MAX. QNH PRESSURE IN HPA 1024.4 1030.4 1025.7 1021.8 1023.2 1022.3 1016.2 1022.5 1026.4 1027.4 1030.5 1030.1 1030.5 DAY 11 15 15 1 29 7 13 23 28 23 27 18 MIN. QNH PRESSURE IN HPA 1010.7 1012.5 1015.0 1007.4 1012.0 1011.9 1009.3 1012.3 1016.4 1015.9 1012.9 1012.0 1007.4 DAY 20 7 4 24 19 22 30 17 16 26 12 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.4 1020.9 1022.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.1 1032.1 1035.4 ****** DAY ** ** ** ** ** ** ** ** ** 24 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.3 1008.0 1009.1 ****** DAY ** ** ** ** ** ** ** ** ** 5 12 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 824.0 829.1 827.1 823.3 825.0 822.4 819.5 823.3 826.9 827.8 827.6 826.1 825.2 MAX. QFE PRESSURE IN HPA 829.4 835.4 833.0 828.1 828.4 828.0 822.5 827.9 831.5 832.0 833.8 834.5 835.4 DAY 10 15 9 1 13 6 13 23 28 23 27 18 MIN. QFE PRESSURE IN HPA 818.7 817.6 822.1 815.0 819.6 819.3 817.0 819.5 822.4 823.1 820.8 819.5 815.0 DAY 20 7 4 24 19 30 30 17 16 26 12 22 MEAN QNH PRESSURE IN HPA 1016.8 1022.8 1020.4 1016.0 1017.9 1014.9 1011.4 1016.0 1020.3 1021.3 1021.1 1019.3 1018.2 MAX. QNH PRESSURE IN HPA 1023.2 1030.3 1027.4 1021.6 1022.0 1021.5 1015.0 1021.4 1025.7 1026.3 1028.4 1029.2 1030.3 DAY 10 15 9 1 13 6 13 23 28 23 27 18 MIN. QNH PRESSURE IN HPA 1010.5 1009.2 1014.5 1006.1 1011.6 1011.2 1008.5 1011.4 1014.9 1015.7 1013.0 1011.4 1006.1 DAY 20 7 4 24 19 30 30 17 16 26 12 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.0 1018.3 1020.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.4 1027.0 1033.6 ****** DAY ** ** ** ** ** ** ** ** ** 23 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.3 1008.4 1008.7 ****** DAY ** ** ** ** ** ** ** ** ** 5 12 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.5 828.4 826.4 822.8 824.5 821.6 818.3 821.9 825.7 826.7 826.9 825.5 824.3 MAX. QFE PRESSURE IN HPA 828.6 835.0 831.5 827.7 828.1 827.5 821.3 827.0 829.8 831.3 833.3 833.6 835.0 DAY 10 15 9 1 13 6 21 23 28 23 27 18 MIN. QFE PRESSURE IN HPA 818.0 817.7 822.0 815.0 818.8 817.9 815.5 818.4 821.8 821.9 820.6 819.5 815.0 DAY 20 7 4 24 19 30 30 6 16 17 12 22 MEAN QNH PRESSURE IN HPA 1016.2 1022.0 1019.6 1015.3 1017.3 1013.9 1010.0 1014.3 1018.7 1020.0 1020.2 1018.5 1017.2 MAX. QNH PRESSURE IN HPA 1022.2 1029.8 1025.7 1021.2 1021.6 1020.9 1013.6 1020.3 1023.7 1025.4 1027.8 1028.2 1029.8 DAY 10 15 9 1 13 6 21 23 28 23 27 18 MIN. QNH PRESSURE IN HPA 1009.7 1009.3 1014.4 1006.1 1010.6 1009.5 1006.7 1010.1 1014.2 1014.3 1012.7 1011.4 1006.1 DAY 20 7 4 24 19 30 30 6 16 17 12 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.2 1017.7 1019.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.4 1027.5 1033.0 ****** DAY ** ** ** ** ** ** ** ** ** 23 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.9 1008.7 1007.0 ****** DAY ** ** ** ** ** ** ** ** ** 5 12 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 823.4 828.2 826.3 822.6 824.3 821.3 817.9 821.5 825.2 826.7 826.9 825.7 824.2 MAX. QFE PRESSURE IN HPA 828.6 835.0 831.5 827.0 827.8 827.7 821.0 826.0 829.2 830.8 833.8 833.9 835.0 DAY 10 15 9 1 13 6 20 23 28 19 27 18 MIN. QFE PRESSURE IN HPA 818.0 817.7 821.6 815.0 818.0 817.6 815.0 818.0 821.5 821.9 820.1 819.7 815.0 DAY 20 7 26 24 19 27 29 6 3 17 12 23 MEAN QNH PRESSURE IN HPA 1016.1 1021.8 1019.5 1015.1 1017.1 1013.6 1009.6 1013.8 1018.2 1019.9 1020.3 1018.7 1017.0 MAX. QNH PRESSURE IN HPA 1022.2 1029.8 1025.7 1020.3 1021.3 1021.2 1013.2 1019.1 1022.9 1024.8 1028.4 1028.5 1029.8 DAY 10 15 9 1 13 6 20 23 28 19 27 18 MIN. QNH PRESSURE IN HPA 1009.7 1009.3 1013.9 1006.1 1009.7 1009.2 1006.1 1009.7 1013.8 1014.3 1012.1 1011.7 1006.1 DAY 20 7 26 24 19 27 29 6 3 17 12 23 MEAN QFF PRESSURE IN HPA 1026.6 1028.0 1016.7 1010.4 1009.1 1001.4 994.2 999.4 1007.7 1015.1 1020.0 1021.8 1012.5 MAX. QFF PRESSURE IN HPA 1041.0 1042.4 1024.2 1019.5 1013.2 1010.1 997.1 1004.3 1012.8 1024.1 1030.1 1035.6 1042.4 DAY 26 3 9 2 10 6 20 23 29 23 27 18 MIN. QFF PRESSURE IN HPA 1012.1 1011.2 1010.0 1002.4 1003.1 995.0 990.3 994.6 1002.4 1006.5 1009.6 1009.6 990.3 DAY 6 7 3 24 19 27 15 5 3 17 12 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 827.3 827.3 826.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 831.2 833.8 834.1 ****** DAY ** ** ** ** ** ** ** ** ** 19 27 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 822.7 819.9 820.3 ****** DAY ** ** ** ** ** ** ** ** ** 17 12 22 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.6 1020.7 1019.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.3 1028.4 1028.7 ****** DAY ** ** ** ** ** ** ** ** ** 19 27 18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.2 1011.9 1012.4 ****** DAY ** ** ** ** ** ** ** ** ** 17 12 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.8 1019.4 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.1 1031.0 1034.2 ****** DAY ** ** ** ** ** ** ** ** ** 23 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1005.4 1008.1 1009.4 ****** DAY ** ** ** ** ** ** ** ** ** 17 12 5 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 827.4 827.1 826.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 831.2 833.7 833.1 ****** DAY ** ** ** ** ** ** ** ** ** 19 26 18 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 823.1 819.6 820.5 ****** DAY ** ** ** ** ** ** ** ** ** 25 11 22 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.8 1020.4 1019.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.3 1028.3 1027.6 ****** DAY ** ** ** ** ** ** ** ** ** 19 26 18 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.7 1011.6 1012.6 ****** DAY ** ** ** ** ** ** ** ** ** 25 11 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.9 1017.7 1020.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.5 1027.5 1031.8 ****** DAY ** ** ** ** ** ** ** ** ** 23 27 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1005.5 1005.9 1009.2 ****** DAY ** ** ** ** ** ** ** ** ** 5 11 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.0 3.3 6.4 12.0 15.6 19.4 23.7 23.3 22.0 14.8 3.3 5.7 12.4 MINIMUN AIR TEMPERATURE (C) -6.3 -2.6 -0.6 4.1 5.9 7.9 11.1 9.6 6.3 2.4 -6.9 -0.3 2.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 22 13 10 2 0 0 0 0 0 0 20 8 75 DAYS WITH FREEZING MIN.<= 0 27 22 20 8 3 0 0 0 0 8 26 17 131 TEMPERATURE RECORDS LOWEST(C) -20.0 -9.0 -7.0 -4.0 0.0 2.0 6.0 5.0 1.0 -2.0 -15.0 -9.0 -20.0 DAY 13 5 8 1 2 4 2 22 23 6 23 24 MAXIMUM AIR TEMPERATURE (C) 5.0 10.2 13.9 19.5 24.2 29.2 34.0 34.6 30.8 24.0 9.5 10.1 20.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 15 30 31 23 0 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 6 0 0 0 0 0 0 0 0 0 0 0 6 TEMPERATURE RECORDS HIGHEST(C) 12.0 15.0 20.0 23.0 29.0 35.0 38.0 37.0 34.0 27.0 16.0 16.0 38.0 DAY 31 15 29 10 26 30 15 11 11 17 7 19 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 12.8 14.5 15.4 18.3 21.3 22.9 25.0 24.5 21.6 16.4 10.4 17.8 MEAN DAILY TEMP. (MDT) (C) -0.7 3.8 6.6 11.8 15.0 18.5 22.6 22.1 18.5 13.2 1.3 4.9 11.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 3.5 54.5 40.0 0.0 0.0 0.0 0.0 98.0 HEATING DEG. DAYS(BASE 18 0C) 578.5 398.5 353.0 185.5 95.0 23.5 0.0 0.0 12.5 142.5 500.5 406.0 2695.5 DEWPOINT (MEAN C) -4.3 -1.1 -0.1 1.2 5.6 6.9 8.3 7.2 6.2 4.1 -2.1 -0.3 2.6 MIXING RATIO (G/KG) 3.57 4.39 4.75 5.23 7.10 7.80 8.57 7.94 7.42 6.38 4.16 4.68 6.00 VAPOUR PRESSURE (HPA) 4.70 5.78 6.24 6.86 9.29 10.17 11.18 10.36 9.73 8.42 5.49 6.16 7.87 SATURATION DEF. (HPA) 1.46 2.37 4.01 8.02 9.97 14.46 21.00 21.38 19.30 10.16 2.84 3.36 9.86 RELATIVE HUMIDITY (MEAN %) 80 75 67 51 56 48 41 39 39 52 69 68 57 RELATIVE HUMIDITY (MAX. %) 91 91 88 75 81 73 67 64 66 80 86 86 79 RELATIVE HUMIDITY (MIN. %) 67 56 44 31 34 28 24 22 25 34 53 54 39 RELATIVE HUMIDITY (MEAN% 03UTC) 87 86 83 71 79 73 66 64 66 80 86 85 77 RELATIVE HUMIDITY (MEAN% 09UTC) 72 66 50 34 40 33 28 26 29 38 58 60 45 RELATIVE HUMIDITY (MEAN% 15UTC) 77 68 57 40 43 32 25 25 30 41 65 62 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.0 23.3 36.9 9.0 13.3 0.7 0.0 0.0 0.0 0.3 7.3 79.3 199.1 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 3 4 DAYS WITH PRECIPITATION >= 5 3 1 2 1 0 0 0 0 0 0 0 6 13 DAYS WITH PRECIPITATION >= 1 5 6 8 2 6 0 0 0 0 0 5 8 40 DAYS WITH PRECIPITATION 7 13 10 6 6 2 0 0 0 1 6 10 61 GREATEST DAILY PRECIPITATION 9.0 5.0 16.0 5.0 3.2 0.4 0.0 0.0 0.0 0.3 2.0 20.4 20.4 DAY 21 22 13 25 8 19 ** ** ** 31 11 7 DAY WITH THUNDER STORM 1 0 0 2 3 0 0 0 0 0 0 1 7 DAYS WITH SNOW OR SLEET 7 1 2 0 0 0 0 0 0 0 3 0 13 DAYS WITH DUST 1 0 5 10 3 11 9 11 7 5 0 0 62 WIND DIRECTION (PREVAILING) 270 270 180 225 225 225 90 90 225 225 225 180 225 PREVAILING WIND SPEED(KNOTS) 12.7 10.8 12.3 13.9 13.5 12.3 10.6 10.8 9.1 13.7 11.5 12.3 12.1 PREVAILING WIND PERCENT 10.9 11.2 14.5 27.1 20.6 12.9 15.3 9.3 8.3 12.2 8.3 15.1 11.2 CALMS PERCENT OF WIND 69.0 60.7 54.0 39.2 51.2 60.8 52.0 72.2 65.2 68.3 74.4 56.5 59.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 181 205 180 186 2696 VECTOR WIND DIRECTION (MEAN) 240 241 209 215 241 216 56 87 263 218 275 204 224 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.3 3.2 6.7 3.8 2.1 1.6 0.9 1.4 2.0 1.2 2.6 1.9 WIND STEADINESES (MEAN %) 50.0 59.0 62.7 82.7 64.4 46.7 33.3 33.3 45.2 55.6 41.4 50.0 43.2 WIND SPEED (MEAN KNOTS) 3.4 3.9 5.1 8.1 5.9 4.5 4.8 2.7 3.1 3.6 2.9 5.2 4.4 FASTEST WIND DIRECTION 270 180 120 200 240 180 70 30 150 210 310 90 120 FASTEST WIND SPEED (KNOTS) 25 25 36 30 22 26 20 20 15 20 24 23 36 DAY 4 17 24 10 11 1 8 9 4 24 2 12 DAYS WITH SKY CLEAR (0-2)/8 9 9 10 7 18 24 28 30 30 18 12 11 206 DAYS WITH P.CLOUDY (3-6)/8 16 11 18 16 9 6 3 1 0 11 14 8 113 DAYS WITH CLOUDY (7-8)/8 6 8 3 7 4 0 0 0 0 2 4 12 46 DAYS WITH VISIBILITY =< 2 KM 6 3 0 2 1 0 0 0 0 0 0 1 13 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 826.1 825.5 824.0 823.1 823.8 821.7 822.8 821.9 825.6 829.3 827.9 825.8 824.8 MAX. QFE PRESSURE IN HPA 833.8 832.6 830.1 827.4 830.7 828.6 828.0 826.1 830.2 834.5 835.6 833.8 835.6 DAY-HOUR 13- 6 1- 6 20- 6 2- 6 2-21 8- 6 9- 6 29- 6 16- 6 10- 6 26- 6 24- 6 MIN. QFE PRESSURE IN HPA 814.7 817.6 812.2 814.6 813.7 814.2 816.0 817.8 820.1 823.0 819.6 816.4 812.2 DAY-HOUR 21- 0 17-15 13- 3 25- 0 29-15 21-12 24-15 5-15 1-15 31-18 12-18 12-12 MEAN QNH PRESSURE IN HPA 1019.3 1018.5 1016.8 1015.7 1016.5 1014.0 1015.3 1014.3 1018.7 1023.0 1021.4 1018.9 1017.7 MAX. QNH PRESSURE IN HPA 1028.4 1027.0 1024.0 1020.8 1024.7 1022.2 1021.5 1019.3 1024.1 1029.2 1030.5 1028.4 1030.5 DAY-HOUR 13- 6 1- 6 20- 6 2- 6 2-21 8- 6 9- 6 29- 6 16- 6 10- 6 26- 6 24- 6 MIN. QNH PRESSURE IN HPA 1005.7 1009.2 1002.8 1005.6 1004.6 1005.1 1007.3 1009.4 1012.1 1015.6 1011.6 1007.8 1002.8 DAY-HOUR 21- 0 17-15 13- 3 25- 0 29-15 21-12 24-15 5-15 1-15 31-18 12-18 12-12 MEAN QFF PRESSURE IN HPA 1022.8 1018.6 1014.4 1009.2 1007.3 1002.0 1000.4 999.6 1007.5 1016.3 1023.5 1018.3 1011.7 MAX. QFF PRESSURE IN HPA 1043.2 1030.2 1025.2 1019.1 1022.4 1015.8 1009.8 1008.0 1013.9 1023.4 1036.1 1030.9 1043.2 DAY-HOUR 13- 6 5- 3 20- 3 2- 3 3- 3 4- 3 9- 3 21- 6 26- 3 10- 3 26- 3 24- 3 MIN. QFF PRESSURE IN HPA 1002.5 1005.0 998.3 996.1 992.5 991.6 991.4 993.9 999.1 1007.0 1011.9 1006.6 991.4 DAY-HOUR 21- 0 17-12 24-12 25- 0 29-12 21- 9 24-15 7-12 1- 9 1-18 12-18 12-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 826.0 825.7 823.9 823.2 823.9 822.0 822.9 822.2 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 833.1 831.0 829.7 826.6 829.9 827.3 827.0 825.1 ****** ****** ****** ****** ****** DAY 13 5 20 3 3 8 8 29 ** ** ** ** MIN. QFE PRESSURE IN HPA 814.7 821.0 815.0 814.6 816.4 816.0 817.5 820.0 ****** ****** ****** ****** ****** DAY 21 11 13 25 7 22 24 6 ** ** ** ** MEAN QNH PRESSURE IN HPA 1019.1 1018.8 1016.6 1015.8 1016.6 1014.4 1015.5 1014.6 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.6 1025.1 1023.5 1019.9 1023.8 1020.7 1020.3 1018.1 ****** ****** ****** ****** ****** DAY 13 5 20 3 3 8 8 29 ** ** ** ** MIN. QNH PRESSURE IN HPA 1005.7 1013.2 1006.1 1005.6 1007.8 1007.3 1009.1 1012.0 ****** ****** ****** ****** ****** DAY 21 11 13 25 7 22 24 6 ** ** ** ** MEAN QFF PRESSURE IN HPA 1022.3 1018.2 1013.8 1009.0 1007.5 1002.3 1000.5 999.6 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1039.4 1027.0 1024.7 1016.5 1020.3 1013.7 1008.1 1004.0 ****** ****** ****** ****** ****** DAY 13 5 16 16 3 4 8 29 ** ** ** ** MIN. QFF PRESSURE IN HPA 1002.5 1009.4 1001.6 996.1 997.5 994.9 994.3 995.7 ****** ****** ****** ****** ****** DAY 21 22 13 25 31 21 24 7 ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 826.1 825.8 824.0 823.3 824.4 822.4 823.5 822.6 826.4 829.8 828.5 826.1 825.2 MAX. QFE PRESSURE IN HPA 833.5 831.6 829.7 826.8 829.8 827.6 827.7 825.8 829.2 834.0 835.0 833.0 835.0 DAY 13 5 20 16 3 8 9 29 16 11 26 24 MIN. QFE PRESSURE IN HPA 816.0 820.3 812.2 814.6 816.4 816.3 818.4 820.0 822.1 825.0 822.7 818.7 812.2 DAY 21 22 13 25 7 22 24 19 1 31 13 12 MEAN QNH PRESSURE IN HPA 1019.3 1018.9 1016.8 1016.0 1017.2 1014.9 1016.2 1015.2 1019.6 1023.6 1022.1 1019.3 1018.2 MAX. QNH PRESSURE IN HPA 1028.0 1025.8 1023.5 1020.1 1023.7 1021.0 1021.2 1018.9 1022.9 1028.6 1029.8 1027.4 1029.8 DAY 13 5 20 16 3 8 9 29 16 11 26 24 MIN. QNH PRESSURE IN HPA 1007.3 1012.4 1002.8 1005.6 1007.8 1007.6 1010.1 1012.0 1014.5 1018.0 1015.2 1010.5 1002.8 DAY 21 22 13 25 7 22 24 19 1 31 13 12 MEAN QFF PRESSURE IN HPA 1023.9 1020.0 1015.4 1010.4 1009.5 1004.2 1002.5 1002.1 1009.4 1017.4 1024.8 1019.0 1013.2 MAX. QFF PRESSURE IN HPA 1042.9 1030.2 1025.2 1019.1 1022.4 1015.8 1009.8 1007.3 1013.9 1023.4 1036.1 1030.9 1042.9 DAY 13 5 20 2 3 4 9 21 26 10 26 24 MIN. QFF PRESSURE IN HPA 1005.6 1009.3 999.7 997.4 998.7 996.9 996.1 997.6 1002.8 1009.7 1013.1 1007.8 996.1 DAY 21 22 13 25 31 21 24 5 2 31 1 12 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 827.1 826.5 824.9 823.8 824.7 822.5 824.0 823.3 827.1 830.5 829.1 826.8 825.9 MAX. QFE PRESSURE IN HPA 833.8 832.6 830.1 827.4 830.0 828.6 828.0 826.1 830.2 834.5 835.6 833.8 835.6 DAY 13 1 20 2 3 8 9 29 16 10 26 24 MIN. QFE PRESSURE IN HPA 818.1 820.3 815.1 815.8 817.0 816.1 819.2 820.4 822.0 826.0 823.2 819.8 815.1 DAY 21 22 13 25 31 21 1 5 1 31 13 12 MEAN QNH PRESSURE IN HPA 1020.5 1019.8 1017.8 1016.5 1017.6 1015.0 1016.7 1015.9 1020.5 1024.5 1022.9 1020.1 1019.0 MAX. QNH PRESSURE IN HPA 1028.4 1027.0 1024.0 1020.8 1023.9 1022.2 1021.5 1019.3 1024.1 1029.2 1030.5 1028.4 1030.5 DAY 13 1 20 2 3 8 9 29 16 10 26 24 MIN. QNH PRESSURE IN HPA 1009.8 1012.4 1006.2 1007.0 1008.5 1007.4 1011.1 1012.5 1014.4 1019.1 1015.8 1011.8 1006.2 DAY 21 22 13 25 31 21 1 5 1 31 13 12 MEAN QFF PRESSURE IN HPA 1024.5 1020.4 1015.9 1010.0 1008.1 1002.8 1001.8 1001.5 1008.4 1017.4 1024.2 1019.1 1012.8 MAX. QFF PRESSURE IN HPA 1043.2 1029.0 1024.6 1017.7 1020.2 1013.5 1008.6 1008.0 1013.3 1022.5 1035.2 1030.3 1043.2 DAY 13 1 20 2 3 4 9 21 28 10 26 24 MIN. QFF PRESSURE IN HPA 1006.9 1009.4 1002.0 1001.8 995.8 993.0 996.2 996.2 1001.0 1011.1 1013.2 1008.9 993.0 DAY 21 22 24 25 31 21 1 5 1 1 8 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.2 825.9 824.2 823.3 824.1 821.8 823.1 822.2 826.2 829.5 828.1 826.2 825.1 MAX. QFE PRESSURE IN HPA 833.6 832.0 829.4 827.0 829.3 827.8 827.4 824.6 829.3 833.6 834.9 833.7 834.9 DAY 13 5 20 2 3 8 9 21 16 9 26 24 MIN. QFE PRESSURE IN HPA 817.8 819.1 815.2 816.0 816.3 814.9 818.0 819.1 821.4 825.1 822.2 818.8 814.9 DAY 21 22 13 25 31 21 24 5 1 31 12 12 MEAN QNH PRESSURE IN HPA 1019.4 1019.0 1017.1 1016.0 1016.9 1014.1 1015.7 1014.6 1019.4 1023.3 1021.7 1019.4 1018.0 MAX. QNH PRESSURE IN HPA 1028.2 1026.3 1023.2 1020.3 1023.1 1021.3 1020.8 1017.5 1023.1 1028.2 1029.7 1028.3 1029.7 DAY 13 5 20 2 3 8 9 21 16 9 26 24 MIN. QNH PRESSURE IN HPA 1009.4 1011.0 1006.3 1007.3 1007.6 1006.0 1009.7 1011.0 1013.7 1018.1 1014.6 1010.6 1006.0 DAY 21 22 13 25 31 21 24 5 1 31 12 12 MEAN QFF PRESSURE IN HPA 1022.0 1018.3 1013.8 1008.9 1006.8 1001.2 999.9 998.8 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1039.2 1028.3 1021.3 1016.3 1018.5 1011.9 1007.0 1004.0 ****** ****** ****** ****** ****** DAY 13 5 16 2 3 4 8 21 ** ** ** ** MIN. QFF PRESSURE IN HPA 1005.7 1007.4 1001.1 1000.4 994.8 991.6 993.9 994.6 ****** ****** ****** ****** ****** DAY 21 22 24 25 31 21 24 6 ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.6 824.5 823.3 822.4 823.0 820.6 821.9 820.8 824.7 828.1 827.0 825.1 823.9 MAX. QFE PRESSURE IN HPA 831.9 830.7 828.0 826.0 827.9 826.2 826.0 823.3 827.8 832.2 833.7 831.8 833.7 DAY 13 5 19 2 3 8 8 29 26 10 26 24 MIN. QFE PRESSURE IN HPA 818.8 818.0 814.4 816.9 814.0 814.2 816.6 818.0 820.5 823.6 820.8 816.4 814.0 DAY 21 17 24 25 29 21 24 5 1 31 12 12 MEAN QNH PRESSURE IN HPA 1018.7 1017.3 1015.9 1014.9 1015.6 1012.8 1014.2 1012.9 1017.6 1021.7 1020.3 1018.1 1016.7 MAX. QNH PRESSURE IN HPA 1026.1 1024.7 1021.5 1019.1 1021.4 1019.4 1019.1 1015.9 1021.3 1026.5 1028.3 1026.0 1028.3 DAY 13 5 19 2 3 8 8 29 26 10 26 24 MIN. QNH PRESSURE IN HPA 1010.6 1009.7 1005.4 1008.4 1004.9 1005.1 1008.0 1009.7 1012.6 1016.3 1013.0 1007.8 1004.9 DAY 21 17 24 25 29 21 24 5 1 31 12 12 MEAN QFF PRESSURE IN HPA 1021.5 1016.5 1013.0 1007.9 1006.3 1000.4 999.0 997.6 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1037.7 1026.8 1020.8 1015.8 1016.6 1010.2 1005.9 1001.7 ****** ****** ****** ****** ****** DAY 13 5 15 2 3 4 8 21 ** ** ** ** MIN. QFF PRESSURE IN HPA 1008.3 1005.0 998.3 1001.6 992.5 993.4 992.3 993.9 ****** ****** ****** ****** ****** DAY 21 17 24 24 29 30 24 7 ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.9 824.6 823.4 822.4 822.8 820.5 821.2 820.2 824.6 828.1 827.0 825.2 823.8 MAX. QFE PRESSURE IN HPA 832.4 830.9 828.3 826.0 829.0 825.6 825.0 823.1 827.4 832.2 833.7 832.1 833.7 DAY 12 5 19 2 2 4 8 21 26 10 26 24 MIN. QFE PRESSURE IN HPA 819.0 817.6 816.8 818.1 813.7 814.5 816.0 817.8 820.1 823.6 820.2 816.9 813.7 DAY 21 17 12 24 29 21 24 5 1 31 12 12 MEAN QNH PRESSURE IN HPA 1019.0 1017.5 1016.0 1014.8 1015.3 1012.6 1013.5 1012.3 1017.4 1021.7 1020.4 1018.2 1016.6 MAX. QNH PRESSURE IN HPA 1026.7 1025.0 1021.9 1019.1 1022.7 1018.7 1018.0 1015.7 1020.8 1026.5 1028.3 1026.4 1028.3 DAY 12 5 19 2 2 4 8 21 26 10 26 24 MIN. QNH PRESSURE IN HPA 1010.8 1009.2 1008.2 1009.8 1004.6 1005.5 1007.3 1009.4 1012.1 1016.3 1012.3 1008.4 1004.6 DAY 21 17 12 24 29 21 24 5 1 31 12 12 MEAN QFF PRESSURE IN HPA 1023.4 1018.4 1014.4 1009.1 1007.3 1001.6 999.6 998.8 1006.8 1015.2 1022.8 1017.7 1011.3 MAX. QFF PRESSURE IN HPA 1039.3 1029.3 1022.0 1017.4 1021.2 1011.2 1005.5 1004.0 1011.9 1020.6 1034.3 1030.1 1039.3 DAY 13 5 19 2 2 3 8 21 26 10 25 24 MIN. QFF PRESSURE IN HPA 1010.4 1006.9 1002.9 1003.2 995.5 994.9 991.4 994.6 1000.5 1009.0 1012.1 1006.6 991.4 DAY 21 17 24 24 29 30 24 6 2 31 12 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 826.1 825.3 824.1 823.2 823.8 821.6 822.5 821.6 825.0 828.8 827.5 825.5 824.6 MAX. QFE PRESSURE IN HPA 833.5 831.2 829.3 826.4 829.8 826.8 826.5 824.9 828.1 833.0 834.2 832.1 834.2 DAY 12 5 19 2 2 11 7 28 26 25 26 24 MIN. QFE PRESSURE IN HPA 820.0 820.0 816.4 817.5 815.0 814.8 817.0 819.0 820.8 823.0 819.6 817.6 814.8 DAY 25 17 12 24 29 21 23 5 1 31 12 12 MEAN QNH PRESSURE IN HPA 1019.3 1018.3 1016.9 1015.8 1016.5 1013.9 1014.9 1013.9 1018.0 1022.5 1020.9 1018.5 1017.5 MAX. QNH PRESSURE IN HPA 1028.0 1025.3 1023.1 1019.6 1023.7 1020.1 1019.7 1017.8 1021.6 1027.4 1028.9 1026.4 1028.9 DAY 12 5 19 2 2 11 7 28 26 25 26 24 MIN. QNH PRESSURE IN HPA 1012.0 1012.0 1007.8 1009.1 1006.1 1005.9 1008.5 1010.8 1013.0 1015.6 1011.6 1009.2 1005.9 DAY 25 17 12 24 29 21 23 5 1 31 12 12 MEAN QFF PRESSURE IN HPA 1023.1 1018.8 1014.9 1009.3 1006.8 1001.8 1000.0 999.6 1006.0 1015.6 1022.3 1017.4 1011.3 MAX. QFF PRESSURE IN HPA 1039.6 1027.0 1024.0 1015.7 1019.5 1012.1 1006.6 1004.8 1011.4 1021.0 1033.6 1028.1 1039.6 DAY 13 5 15 2 2 3 7 21 26 25 26 24 MIN. QFF PRESSURE IN HPA 1011.4 1008.7 1004.8 1000.9 995.2 993.3 993.2 994.0 999.8 1007.0 1011.9 1007.6 993.2 DAY 20 17 12 24 29 21 23 6 1 1 12 12 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 826.2 825.5 824.4 823.6 823.9 822.1 823.1 822.2 ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 833.4 831.2 829.8 827.0 830.7 827.3 827.0 825.4 ****** ****** ****** ****** ****** DAY 12 5 19 2 2 7 7 28 ** ** ** ** MIN. QFE PRESSURE IN HPA 817.3 821.0 816.4 817.5 816.6 815.5 817.8 820.0 ****** ****** ****** ****** ****** DAY 20 11 12 24 6 21 23 5 ** ** ** ** MEAN QNH PRESSURE IN HPA 1019.4 1018.6 1017.2 1016.2 1016.6 1014.5 1015.7 1014.7 ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.9 1025.3 1023.7 1020.3 1024.7 1020.7 1020.3 1018.4 ****** ****** ****** ****** ****** DAY 12 5 19 2 2 7 7 28 ** ** ** ** MIN. QNH PRESSURE IN HPA 1008.8 1013.2 1007.8 1009.1 1008.0 1006.7 1009.4 1012.0 ****** ****** ****** ****** ****** DAY 20 11 12 24 6 21 23 5 ** ** ** ** MEAN QFF PRESSURE IN HPA 1022.1 1017.9 1014.0 1009.1 1006.5 1001.8 1000.0 999.1 ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1039.6 1027.0 1023.5 1016.5 1019.5 1012.5 1007.5 1004.1 ****** ****** ****** ****** ****** DAY 12 5 15 15 2 3 7 28 ** ** ** ** MIN. QFF PRESSURE IN HPA 1005.7 1010.0 1003.5 999.6 996.9 994.5 994.5 995.2 ****** ****** ****** ****** ****** DAY 20 21 12 24 31 21 24 5 ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.2 5.0 6.2 14.9 16.8 22.5 28.6 25.6 22.2 16.0 8.8 -1.0 13.8 MINIMUN AIR TEMPERATURE (C) -4.8 -0.9 -0.9 6.9 7.3 9.8 14.6 12.7 7.1 4.3 -3.7 -6.9 3.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 2 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 17 8 8 1 0 0 0 0 0 0 16 21 71 DAYS WITH FREEZING MIN.<= 0 25 17 16 3 0 0 0 0 0 5 25 28 119 TEMPERATURE RECORDS LOWEST(C) -14.0 -6.0 -12.0 -7.0 1.0 7.0 11.0 5.0 2.0 -2.0 -12.0 -23.0 -23.0 DAY 13 4 5 29 11 4 8 30 25 20 22 23 MAXIMUM AIR TEMPERATURE (C) 3.8 9.6 11.0 20.1 22.1 29.0 35.7 32.6 29.7 22.5 16.8 3.5 19.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 12 31 29 18 0 0 0 90 DAYS WITH MAXIMUM TEMP. <= 0 5 0 0 0 0 0 0 0 0 0 0 12 17 TEMPERATURE RECORDS HIGHEST(C) 14.0 15.0 18.0 27.0 28.0 36.0 38.0 35.0 33.0 28.0 23.0 13.0 38.0 DAY 3 27 17 4 27 29 11 1 1 1 2 14 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 10.5 11.9 13.2 14.8 19.2 21.1 19.9 22.6 18.2 20.5 10.4 15.9 MEAN DAILY TEMP. (MDT) (C) -0.5 4.3 5.1 13.5 14.7 19.4 25.2 22.7 18.4 13.4 6.6 -1.7 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 9.0 129.0 68.0 2.0 0.0 0.0 0.0 208.0 HEATING DEG. DAYS(BASE 18 0C) 554.0 366.0 400.5 141.5 102.5 9.5 0.0 2.0 32.5 145.0 343.0 609.5 2706.0 DEWPOINT (MEAN C) -4.0 -0.2 -0.7 2.2 4.6 7.2 9.6 8.8 6.6 4.1 -1.0 -4.7 2.7 MIXING RATIO (G/KG) 3.58 4.64 4.59 5.60 6.60 7.84 9.30 8.79 7.53 6.30 4.48 3.46 6.06 VAPOUR PRESSURE (HPA) 4.73 6.09 6.03 7.36 8.67 10.25 12.10 11.48 9.90 8.30 5.93 4.57 7.95 SATURATION DEF. (HPA) 1.82 2.97 4.07 10.58 11.49 18.61 29.64 23.51 19.50 11.16 6.69 1.63 11.81 RELATIVE HUMIDITY (MEAN %) 79 71 65 46 49 41 34 37 40 49 53 79 54 RELATIVE HUMIDITY (MAX. %) 89 88 89 72 79 73 64 66 70 76 81 91 78 RELATIVE HUMIDITY (MIN. %) 70 59 45 32 33 26 21 25 26 33 35 66 39 RELATIVE HUMIDITY (MEAN% 03UTC) 87 87 89 70 77 73 64 66 70 76 80 90 77 RELATIVE HUMIDITY (MEAN% 09UTC) 75 65 53 37 38 31 25 27 29 36 43 73 44 RELATIVE HUMIDITY (MEAN% 15UTC) 76 68 57 39 40 30 24 30 30 42 46 76 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 88.7 32.6 55.0 53.2 26.8 9.3 0.0 0.0 0.0 2.2 8.0 54.7 330.5 DAYS WITH PRECIPITATION >=10 2 1 1 2 0 0 0 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 5 3 3 3 2 2 1 0 0 0 0 0 5 19 DAYS WITH PRECIPITATION >= 1 9 5 11 4 7 2 0 0 0 1 2 10 51 DAYS WITH PRECIPITATION 11 8 14 7 12 3 0 0 0 5 3 14 77 GREATEST DAILY PRECIPITATION 54.0 18.0 16.0 34.0 7.2 7.0 0.0 0.0 0.0 2.0 4.5 15.0 54.0 DAY 27 8 27 28 5 1 ** ** ** 24 29 8 DAY WITH THUNDER STORM 0 0 0 0 3 1 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 5 1 1 1 0 0 0 0 0 0 1 8 17 DAYS WITH DUST 0 0 0 14 8 9 10 5 6 9 11 1 73 WIND DIRECTION (PREVAILING) 225 225 270 180 225 225 90 90 90 225 180 270 225 PREVAILING WIND SPEED(KNOTS) 11.4 11.7 12.7 16.6 14.1 11.1 13.8 13.8 11.3 10.4 10.4 10.6 11.7 PREVAILING WIND PERCENT 5.9 15.6 10.2 19.4 18.4 13.3 12.5 7.3 7.4 11.3 6.7 7.6 9.1 CALMS PERCENT OF WIND 78.3 68.0 63.9 46.1 60.5 65.6 53.0 77.7 79.0 69.4 81.1 78.4 68.3 NO. OF WIND OBSERVATION 152 147 166 180 185 180 168 179 162 186 180 185 2070 VECTOR WIND DIRECTION (MEAN) 201 229 246 210 219 220 144 61 20 240 179 264 218 VECTOR WIND MAGNITUDE(KNOTS) 1.2 2.4 1.9 5.6 3.8 1.8 1.6 0.6 0.7 2.0 0.7 1.2 1.6 WIND STEADINESES (MEAN %) 42.9 64.9 44.2 73.7 77.6 43.9 34.8 23.1 31.8 69.0 46.7 54.5 44.4 WIND SPEED (MEAN KNOTS) 2.8 3.7 4.3 7.6 4.9 4.1 4.6 2.6 2.2 2.9 1.5 2.2 3.6 FASTEST WIND DIRECTION 300 240 270 190 220 90 150 80 320 210 180 270 190 FASTEST WIND SPEED (KNOTS) 20 22 20 30 24 28 20 25 22 30 18 24 30 DAY 1 28 19 14 2 19 3 8 20 16 3 13 DAYS WITH SKY CLEAR (0-2)/8 8 9 7 5 7 22 26 20 24 14 19 13 174 DAYS WITH P.CLOUDY (3-6)/8 6 14 12 16 15 7 5 11 6 13 9 10 124 DAYS WITH CLOUDY (7-8)/8 16 5 12 9 9 1 0 0 0 4 2 8 66 DAYS WITH VISIBILITY =< 2 KM 12 2 2 2 1 1 0 0 0 1 0 12 33 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 826.1 823.6 823.7 825.5 826.0 824.1 821.9 824.0 828.5 829.1 829.8 825.9 825.7 MAX. QFE PRESSURE IN HPA 835.0 832.4 830.7 831.0 831.7 831.1 826.1 830.1 832.3 834.7 836.5 834.5 836.5 DAY-HOUR 18- 6 13-15 5- 6 27- 6 20- 6 11- 6 10- 6 29- 6 24- 6 10- 6 13- 6 22- 9 MIN. QFE PRESSURE IN HPA 817.2 816.4 812.4 819.2 819.8 818.2 817.2 818.0 823.7 823.4 816.0 817.2 812.4 DAY-HOUR 10-15 8-12 27- 6 22-12 16-18 23-18 6-15 6-15 5-15 4- 9 30-12 15-18 MEAN QNH PRESSURE IN HPA 1019.3 1016.3 1016.4 1018.5 1019.1 1016.9 1014.3 1016.8 1022.1 1022.8 1023.7 1019.0 1018.8 MAX. QNH PRESSURE IN HPA 1029.8 1026.7 1024.7 1025.1 1025.9 1025.2 1019.3 1024.0 1026.6 1029.5 1031.6 1029.2 1031.6 DAY-HOUR 18- 6 13-15 5- 6 27- 6 20- 6 11- 6 10- 6 29- 6 24- 6 10- 6 13- 6 22- 9 MIN. QNH PRESSURE IN HPA 1008.7 1007.8 1003.0 1011.1 1011.8 1009.9 1008.7 1009.7 1016.4 1016.1 1007.3 1008.7 1003.0 DAY-HOUR 10-15 8-12 27- 6 22-12 16-18 23-18 6-15 6-15 5-15 4- 9 30-12 15-18 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.2 1010.5 1004.6 ****** ****** ****** 1015.6 ****** 1024.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1024.7 1022.0 1016.1 ****** ****** ****** 1022.9 ****** 1040.7 ****** DAY-HOUR **-** **-** **-** 29- 3 11- 3 5-15 **-** **-** **-** 31- 3 **-** 23- 3 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.1 1000.6 995.4 ****** ****** ****** 1006.5 ****** 1009.3 ****** DAY-HOUR **-** **-** **-** 22- 6 16-18 23-18 **-** **-** **-** 4-18 **-** 15-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 826.0 823.7 824.1 825.7 826.4 824.9 822.9 824.9 829.2 829.7 830.6 826.1 826.2 MAX. QFE PRESSURE IN HPA 834.4 830.0 829.5 830.4 831.0 830.7 826.0 830.0 831.7 833.8 835.7 832.4 835.7 DAY 18 13 2 27 11 11 10 29 24 10 13 4 MIN. QFE PRESSURE IN HPA 818.5 818.8 812.7 821.0 820.4 820.8 819.4 820.6 825.7 824.4 816.6 819.4 812.7 DAY 10 8 27 22 4 23 2 14 6 4 30 15 MEAN QNH PRESSURE IN HPA 1019.2 1016.4 1016.9 1018.8 1019.6 1017.8 1015.5 1017.8 1022.9 1023.5 1024.6 1019.3 1019.4 MAX. QNH PRESSURE IN HPA 1029.1 1023.9 1023.3 1024.4 1025.1 1024.7 1019.1 1023.9 1025.9 1028.4 1030.6 1026.7 1030.6 DAY 18 13 2 27 11 11 10 29 24 10 13 4 MIN. QNH PRESSURE IN HPA 1010.3 1010.6 1003.4 1013.2 1012.5 1013.0 1011.3 1012.7 1018.8 1017.2 1008.0 1011.3 1003.4 DAY 10 8 27 22 4 23 2 14 6 4 30 15 MEAN QFF PRESSURE IN HPA 1022.9 1016.7 1016.7 1012.2 1011.6 1006.2 999.9 1004.2 1012.4 1017.0 1023.3 1024.6 1014.0 MAX. QFF PRESSURE IN HPA 1038.4 1025.9 1029.6 1024.7 1022.0 1014.4 1004.5 1013.5 1017.3 1022.9 1031.2 1040.7 1040.7 DAY 27 1 5 29 11 1 8 29 24 31 21 23 MIN. QFF PRESSURE IN HPA 1010.0 1008.7 1001.3 1003.0 1004.0 1000.3 996.0 997.0 1007.8 1006.5 1007.1 1010.6 996.0 DAY 6 28 27 22 2 24 2 14 6 4 30 15 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.6 824.3 824.8 826.4 826.9 825.1 823.3 825.4 829.8 830.1 831.1 826.7 826.7 MAX. QFE PRESSURE IN HPA 835.0 831.2 830.7 831.0 831.7 831.1 826.1 830.1 832.3 834.7 836.5 832.9 836.5 DAY 18 13 5 27 20 11 10 29 24 10 13 4 MIN. QFE PRESSURE IN HPA 818.9 817.4 812.4 821.0 821.9 820.8 819.2 820.8 826.5 825.1 817.4 820.0 812.4 DAY 10 8 27 22 4 23 6 14 6 4 30 15 MEAN QNH PRESSURE IN HPA 1019.9 1017.1 1017.7 1019.6 1020.2 1018.1 1015.9 1018.4 1023.7 1024.0 1025.2 1019.9 1020.0 MAX. QNH PRESSURE IN HPA 1029.8 1025.3 1024.7 1025.1 1025.9 1025.2 1019.3 1024.0 1026.6 1029.5 1031.6 1027.3 1031.6 DAY 18 13 5 27 20 11 10 29 24 10 13 4 MIN. QNH PRESSURE IN HPA 1010.7 1008.9 1003.0 1013.2 1014.3 1013.0 1011.1 1013.0 1019.7 1018.1 1008.9 1012.0 1003.0 DAY 10 8 27 22 4 23 6 14 6 4 30 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.7 1011.0 1005.2 ****** 1002.8 ****** 1015.9 1022.8 1024.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1023.5 1018.2 1012.7 ****** 1007.9 ****** 1022.7 1029.9 1038.2 ****** DAY ** ** ** 29 11 11 ** 24 ** 10 25 23 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.1 1004.4 998.7 ****** 996.5 ****** 1006.6 1007.1 1014.4 ****** DAY ** ** ** 22 16 28 ** 14 ** 4 30 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.5 824.0 824.3 825.9 826.4 824.6 822.4 824.6 829.0 829.5 830.4 826.3 826.2 MAX. QFE PRESSURE IN HPA 835.0 831.6 830.0 829.8 830.7 830.3 825.5 830.1 831.3 834.0 836.0 834.5 836.0 DAY 18 13 6 24 20 11 10 29 1 21 13 22 MIN. QFE PRESSURE IN HPA 818.8 816.8 813.0 820.4 822.0 820.3 818.7 819.4 826.0 823.4 817.1 819.2 813.0 DAY 10 8 27 22 3 23 6 6 6 4 30 15 MEAN QNH PRESSURE IN HPA 1019.8 1016.7 1017.1 1019.0 1019.6 1017.5 1014.9 1017.5 1022.8 1023.3 1024.3 1019.5 1019.3 MAX. QNH PRESSURE IN HPA 1029.8 1025.8 1023.9 1023.7 1024.7 1024.2 1018.6 1024.0 1025.4 1028.6 1031.0 1029.2 1031.0 DAY 18 13 6 24 20 11 10 29 1 21 13 22 MIN. QNH PRESSURE IN HPA 1010.6 1008.2 1003.7 1012.5 1014.4 1012.4 1010.5 1011.3 1019.1 1016.1 1008.6 1011.1 1003.7 DAY 10 8 27 22 3 23 6 6 6 4 30 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.9 823.3 823.1 824.9 825.5 823.5 821.1 823.2 827.4 828.3 828.8 825.3 825.0 MAX. QFE PRESSURE IN HPA 834.2 832.0 828.5 830.4 829.0 828.6 824.3 829.4 829.5 832.7 834.7 832.2 834.7 DAY 18 13 6 24 20 5 20 29 2 21 13 22 MIN. QFE PRESSURE IN HPA 818.0 816.4 814.2 819.2 820.5 819.3 817.7 818.4 824.2 823.6 816.0 817.6 814.2 DAY 10 8 27 22 3 13 6 6 5 4 30 15 MEAN QNH PRESSURE IN HPA 1019.1 1016.0 1015.7 1017.9 1018.5 1016.2 1013.3 1015.8 1020.8 1021.8 1022.5 1018.3 1018.0 MAX. QNH PRESSURE IN HPA 1028.9 1026.3 1022.1 1024.4 1022.7 1022.2 1017.1 1023.2 1023.3 1027.1 1029.5 1026.5 1029.5 DAY 18 13 6 24 20 5 20 29 2 21 13 22 MIN. QNH PRESSURE IN HPA 1009.7 1007.8 1005.1 1011.1 1012.6 1011.2 1009.3 1010.1 1017.0 1016.3 1007.3 1009.2 1005.1 DAY 10 8 27 22 3 13 6 6 5 4 30 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.7 823.2 823.0 824.9 825.1 823.1 820.6 822.7 827.0 828.2 828.8 825.5 824.8 MAX. QFE PRESSURE IN HPA 834.0 832.4 828.1 830.1 828.5 830.4 823.6 827.8 829.5 832.6 834.7 832.4 834.7 DAY 18 13 6 24 11 5 20 29 2 9 13 22 MIN. QFE PRESSURE IN HPA 817.2 817.0 814.6 820.3 820.6 818.3 817.2 818.0 823.7 824.6 817.6 817.6 814.6 DAY 10 8 27 12 16 23 6 6 5 4 29 15 MEAN QNH PRESSURE IN HPA 1018.8 1015.8 1015.6 1017.8 1018.1 1015.7 1012.8 1015.2 1020.4 1021.8 1022.4 1018.5 1017.7 MAX. QNH PRESSURE IN HPA 1028.6 1026.7 1021.6 1024.0 1022.1 1024.4 1016.3 1021.3 1023.3 1027.0 1029.5 1026.7 1029.5 DAY 18 13 6 24 11 5 20 29 2 9 13 22 MIN. QNH PRESSURE IN HPA 1008.7 1008.5 1005.6 1012.4 1012.7 1010.0 1008.7 1009.7 1016.4 1017.5 1009.2 1009.2 1005.6 DAY 10 8 27 12 16 23 6 6 5 4 29 15 MEAN QFF PRESSURE IN HPA 1022.5 1015.9 1015.3 1011.0 1010.1 1003.8 997.0 1001.4 1009.6 1015.1 1021.1 1023.9 1012.2 MAX. QFF PRESSURE IN HPA 1035.5 1028.0 1026.4 1022.5 1017.7 1016.1 1000.1 1010.8 1014.3 1021.8 1028.9 1040.1 1040.1 DAY 26 13 6 28 11 5 20 29 24 21 21 22 MIN. QFF PRESSURE IN HPA 1010.4 1006.1 1003.8 1003.6 1002.9 997.0 993.8 994.7 1005.7 1006.9 1008.0 1011.3 993.8 DAY 6 20 27 14 2 28 2 6 13 4 29 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 825.0 825.5 823.7 ****** 823.1 ****** 828.9 829.3 825.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 829.6 829.8 829.0 ****** 826.8 ****** 833.0 835.0 833.0 ****** DAY ** ** ** 24 21 10 ** 25 ** 9 13 22 MIN. QFE PRESSURE IN HPA ****** ****** ****** 821.0 819.8 818.2 ****** 819.0 ****** 825.1 818.3 817.2 ****** DAY ** ** ** 12 16 23 ** 6 ** 4 29 15 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1018.0 1018.5 1016.4 ****** 1015.7 ****** 1022.6 1023.1 1018.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.4 1023.7 1022.7 ****** 1020.1 ****** 1027.4 1029.8 1027.4 ****** DAY ** ** ** 24 21 10 ** 25 ** 9 13 22 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1013.2 1011.8 1009.9 ****** 1010.8 ****** 1018.1 1010.0 1008.7 ****** DAY ** ** ** 12 16 23 ** 6 ** 4 29 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.0 1009.5 1003.4 ****** 1000.7 ****** 1014.5 1020.8 1023.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1023.2 1015.1 1011.2 ****** 1006.1 ****** 1021.7 1029.3 1039.1 ****** DAY ** ** ** 28 11 10 ** 23 ** 22 25 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.9 1000.6 995.4 ****** 995.9 ****** 1006.5 1009.4 1009.3 ****** DAY ** ** ** 21 16 23 ** 6 ** 4 30 15 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -7.3 -5.8 3.2 13.7 18.4 24.4 27.8 26.9 21.5 15.2 8.6 0.6 12.3 MINIMUN AIR TEMPERATURE (C) -13.0 -11.7 -3.3 6.3 8.5 11.5 15.1 13.4 6.8 3.3 0.4 -6.7 2.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 29 25 12 0 0 0 0 0 0 1 5 23 95 DAYS WITH FREEZING MIN.<= 0 30 29 21 1 0 0 0 0 0 7 16 29 133 TEMPERATURE RECORDS LOWEST(C) -26.0 -24.0 -17.0 -2.0 4.0 6.0 12.0 11.0 1.0 -5.0 -6.0 -15.0 -26.0 DAY 8 1 6 18 12 9 14 12 20 31 27 20 MAXIMUM AIR TEMPERATURE (C) -2.8 -1.8 7.4 19.5 24.4 30.8 35.0 34.5 29.2 21.8 14.3 5.9 18.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 24 31 30 12 0 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 24 20 4 0 0 0 0 0 0 0 0 8 56 TEMPERATURE RECORDS HIGHEST(C) 9.0 4.0 20.0 26.0 31.0 33.0 37.0 37.0 34.0 28.0 18.0 20.0 37.0 DAY 29 10 26 22 22 8 5 3 3 7 4 6 DIF. BETWEEN (MAX.-MIN.) (C) 10.2 9.9 10.7 13.2 15.9 19.3 19.9 21.1 22.4 18.5 13.9 12.6 15.6 MEAN DAILY TEMP. (MDT) (C) -7.9 -6.7 2.1 12.9 16.4 21.1 25.0 23.9 18.0 12.6 7.4 -0.4 10.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.0 17.5 125.0 91.0 7.0 1.5 0.0 0.0 244.0 HEATING DEG. DAYS(BASE 18 0C) 802.0 717.0 445.5 153.0 63.5 0.0 0.0 0.0 35.5 173.0 307.0 569.5 3266.0 DEWPOINT (MEAN C) -9.2 -7.4 -0.4 3.0 5.3 7.6 7.9 8.2 4.9 2.1 1.8 -3.5 1.7 MIXING RATIO (G/KG) 2.53 2.86 4.80 5.99 6.87 8.09 8.27 8.41 6.75 5.51 5.47 3.75 5.78 VAPOUR PRESSURE (HPA) 3.34 3.77 6.31 7.85 9.01 10.56 10.79 10.97 8.87 7.27 7.21 4.95 7.58 SATURATION DEF. (HPA) 0.54 0.49 2.13 9.20 13.30 21.68 28.61 27.08 19.47 11.64 4.62 2.16 11.75 RELATIVE HUMIDITY (MEAN %) 87 89 80 51 45 37 31 35 37 45 66 77 57 RELATIVE HUMIDITY (MAX. %) 92 93 92 77 71 67 57 65 67 73 90 90 78 RELATIVE HUMIDITY (MIN. %) 81 84 69 35 31 25 19 20 23 30 49 65 44 RELATIVE HUMIDITY (MEAN% 03UTC) 90 91 92 75 71 67 57 65 67 73 89 89 77 RELATIVE HUMIDITY (MEAN% 09UTC) 86 87 76 39 35 28 22 25 28 36 58 69 49 RELATIVE HUMIDITY (MEAN% 15UTC) 85 89 77 46 37 27 24 24 28 37 62 76 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 47.4 79.4 58.9 35.2 9.6 0.0 0.0 0.0 0.0 9.0 42.7 38.4 320.6 DAYS WITH PRECIPITATION >=10 2 4 3 1 0 0 0 0 0 0 1 2 13 DAYS WITH PRECIPITATION >= 5 3 6 4 2 1 0 0 0 0 1 3 4 24 DAYS WITH PRECIPITATION >= 1 8 12 12 8 3 0 0 0 0 2 9 7 61 DAYS WITH PRECIPITATION 11 15 15 9 4 1 0 1 0 5 12 9 82 GREATEST DAILY PRECIPITATION 17.0 25.0 12.0 13.0 7.0 0.0 0.0 0.0 0.0 6.0 17.0 11.0 25.0 DAY 23 25 15 3 5 ** ** ** ** 30 20 18 DAY WITH THUNDER STORM 0 1 0 1 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 8 10 4 0 0 0 0 0 0 0 0 5 27 DAYS WITH DUST 0 0 0 6 7 6 8 8 7 11 4 1 58 WIND DIRECTION (PREVAILING) 90 315 315 225 225 225 90 180 225 225 180 225 225 PREVAILING WIND SPEED(KNOTS) 19.0 8.0 8.0 14.0 13.3 8.9 11.3 8.1 16.2 10.0 10.1 7.9 11.4 PREVAILING WIND PERCENT 3.9 3.8 12.2 24.3 14.0 13.2 16.2 9.8 10.5 14.2 9.3 4.5 9.6 CALMS PERCENT OF WIND 88.8 87.5 58.3 39.3 51.7 55.3 58.7 54.9 71.9 60.0 76.0 89.0 65.6 NO. OF WIND OBSERVATION 178 160 180 173 178 159 179 164 153 155 150 155 1984 VECTOR WIND DIRECTION (MEAN) 107 283 251 209 229 217 90 186 242 242 223 208 221 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.4 1.4 6.0 3.3 0.5 1.4 1.0 2.5 2.7 1.3 0.5 1.4 WIND STEADINESES (MEAN %) 35.3 40.0 35.9 73.2 57.9 11.9 36.8 28.6 80.6 65.9 59.1 45.5 40.0 WIND SPEED (MEAN KNOTS) 1.7 1.0 3.9 8.2 5.7 4.2 3.8 3.5 3.1 4.1 2.2 1.1 3.5 FASTEST WIND DIRECTION 110 300 240 260 210 240 80 90 230 290 170 130 110 FASTEST WIND SPEED (KNOTS) 30 15 24 30 24 20 24 18 28 30 18 25 30 DAY 16 12 26 17 14 5 10 31 21 1 22 11 DAYS WITH SKY CLEAR (0-2)/8 11 6 8 9 17 29 25 28 30 15 12 11 201 DAYS WITH P.CLOUDY (3-6)/8 7 9 12 14 10 1 6 3 0 16 14 15 107 DAYS WITH CLOUDY (7-8)/8 13 14 11 7 4 0 0 0 0 0 4 5 58 DAYS WITH VISIBILITY =< 2 KM 19 17 8 0 0 0 0 0 0 2 1 3 50 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.6 824.1 824.0 824.1 825.3 823.2 822.6 822.3 826.2 827.4 828.3 827.0 824.9 MAX. QFE PRESSURE IN HPA 831.6 831.2 830.4 831.8 831.5 828.7 827.5 829.2 831.8 831.8 835.1 833.4 835.1 DAY-HOUR 9- 9 1- 9 27- 6 21- 6 16- 6 2- 6 18- 6 30- 6 26- 6 9- 6 12- 9 4- 6 MIN. QFE PRESSURE IN HPA 816.9 812.0 811.6 816.6 820.0 816.3 817.6 818.4 821.0 822.0 821.5 818.9 811.6 DAY-HOUR 6-12 25- 3 2-12 15-18 9-15 16-15 31-15 1-15 21-12 11-12 9-12 11-15 MEAN QNH PRESSURE IN HPA 1017.5 1016.9 1016.7 1016.9 1018.4 1015.9 1015.2 1014.7 1019.4 1020.8 1021.8 1020.3 1017.9 MAX. QNH PRESSURE IN HPA 1025.8 1025.3 1024.4 1026.0 1025.7 1022.3 1020.9 1022.9 1026.0 1026.0 1029.9 1027.9 1029.9 DAY-HOUR 9- 9 1- 9 27- 6 21- 6 16- 6 2- 6 18- 6 30- 6 26- 6 9- 6 12- 9 4- 6 MIN. QNH PRESSURE IN HPA 1008.4 1002.5 1002.1 1008.0 1012.0 1007.6 1009.2 1010.1 1013.2 1014.4 1013.8 1010.7 1002.1 DAY-HOUR 6-12 25- 3 2-12 15-18 9-15 16-15 31-15 1-15 21-12 11-12 9-12 11-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.5 824.1 823.7 824.5 825.7 824.1 823.5 823.2 827.0 828.2 828.3 827.2 825.3 MAX. QFE PRESSURE IN HPA 829.2 830.6 829.3 831.3 831.2 828.0 826.6 828.3 831.2 831.8 834.5 832.5 834.5 DAY 4 22 27 1 16 1 18 31 26 30 13 4 MIN. QFE PRESSURE IN HPA 818.0 812.0 813.2 818.4 821.2 818.6 820.8 820.2 822.0 824.4 823.7 819.0 812.0 DAY 6 25 19 16 9 17 31 1 21 12 23 12 MEAN QNH PRESSURE IN HPA 1017.4 1016.9 1016.4 1017.4 1018.7 1016.9 1016.1 1015.8 1020.3 1021.8 1021.9 1020.6 1018.4 MAX. QNH PRESSURE IN HPA 1022.9 1024.6 1023.1 1025.4 1025.3 1021.5 1019.9 1021.9 1025.3 1026.0 1029.2 1026.8 1029.2 DAY 4 22 27 1 16 1 18 31 26 30 13 4 MIN. QNH PRESSURE IN HPA 1009.7 1002.5 1004.0 1010.1 1013.5 1010.4 1013.0 1012.3 1014.4 1017.2 1016.4 1010.8 1002.5 DAY 6 25 19 16 9 17 31 1 21 12 23 12 MEAN QFF PRESSURE IN HPA 1027.8 1026.0 1018.3 1011.3 1009.7 1004.1 1001.3 1001.5 1010.4 1016.5 1020.4 1025.3 1014.4 MAX. QFF PRESSURE IN HPA 1043.4 1039.5 1028.1 1021.4 1017.7 1011.6 1004.6 1009.1 1018.3 1025.0 1030.0 1037.5 1043.4 DAY 10 2 5 1 16 1 12 31 26 30 12 20 MIN. QFF PRESSURE IN HPA 1011.6 1005.5 1005.3 1002.1 1002.3 997.4 996.8 996.8 1002.6 1007.4 1011.6 1014.6 996.8 DAY 29 25 19 12 9 17 31 1 21 4 23 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.3 824.9 824.4 825.0 826.2 824.3 823.8 823.5 827.5 828.6 829.0 828.1 825.9 MAX. QFE PRESSURE IN HPA 831.1 831.1 830.4 831.8 831.5 828.7 827.5 829.2 831.8 831.8 834.9 833.4 834.9 DAY 9 22 27 21 16 2 18 30 26 9 12 4 MIN. QFE PRESSURE IN HPA 818.0 812.8 813.7 818.8 821.5 818.9 820.8 820.6 822.2 823.4 824.2 820.2 812.8 DAY 6 25 2 16 9 17 31 1 21 12 9 12 MEAN QNH PRESSURE IN HPA 1018.3 1017.8 1017.3 1018.0 1019.4 1017.2 1016.6 1016.2 1020.9 1022.2 1022.7 1021.6 1019.0 MAX. QNH PRESSURE IN HPA 1025.2 1025.2 1024.4 1026.0 1025.7 1022.3 1020.9 1022.9 1026.0 1026.0 1029.7 1027.9 1029.7 DAY 9 22 27 21 16 2 18 30 26 9 12 4 MIN. QNH PRESSURE IN HPA 1009.7 1003.5 1004.6 1010.6 1013.8 1010.7 1013.0 1012.7 1014.6 1016.1 1017.0 1012.3 1003.5 DAY 6 25 2 16 9 17 31 1 21 12 9 12 MEAN QFF PRESSURE IN HPA 1028.9 ****** 1018.7 1010.6 1009.6 ****** 1000.4 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1042.3 ****** 1028.1 1021.0 1018.7 ****** 1004.2 ****** ****** ****** ****** ****** ****** DAY 9 ** 6 1 16 ** 18 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1015.6 ****** 1006.0 1001.8 1001.9 ****** 996.6 ****** ****** ****** ****** ****** ****** DAY 6 ** 19 26 9 ** 29 ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.1 824.7 824.2 824.5 825.7 823.8 823.2 822.8 826.7 827.7 828.8 827.2 825.4 MAX. QFE PRESSURE IN HPA 831.6 831.2 830.4 831.4 830.8 827.9 826.4 828.2 831.2 830.8 835.1 832.9 835.1 DAY 9 1 27 1 16 1 18 30 25 23 12 20 MIN. QFE PRESSURE IN HPA 817.0 813.8 813.0 819.3 821.2 818.2 820.1 819.8 821.3 823.8 823.0 821.2 813.0 DAY 6 25 2 16 9 16 31 18 21 11 9 12 MEAN QNH PRESSURE IN HPA 1018.1 1017.6 1017.1 1017.3 1018.8 1016.6 1015.8 1015.3 1020.0 1021.2 1022.5 1020.6 1018.4 MAX. QNH PRESSURE IN HPA 1025.8 1025.3 1024.4 1025.5 1024.8 1021.4 1019.6 1021.8 1025.3 1024.8 1029.9 1027.3 1029.9 DAY 9 1 27 1 16 1 18 30 25 23 12 20 MIN. QNH PRESSURE IN HPA 1008.5 1004.7 1003.7 1011.2 1013.5 1009.9 1012.1 1011.8 1013.6 1016.5 1015.6 1013.5 1003.7 DAY 6 25 2 16 9 16 31 18 21 11 9 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.9 823.7 823.5 823.4 824.7 822.4 821.8 821.4 825.2 826.2 827.6 826.3 824.2 MAX. QFE PRESSURE IN HPA 830.5 829.6 830.2 830.5 829.1 826.5 825.1 827.1 830.1 829.8 832.7 832.0 832.7 DAY 9 1 27 1 16 2 11 31 25 30 13 20 MIN. QFE PRESSURE IN HPA 816.9 813.4 811.6 818.1 820.4 816.6 818.3 818.6 821.0 822.0 821.5 819.1 811.6 DAY 6 25 2 15 9 16 31 18 21 11 9 10 MEAN QNH PRESSURE IN HPA 1016.7 1016.4 1016.2 1016.1 1017.5 1014.9 1014.2 1013.7 1018.2 1019.3 1021.0 1019.5 1017.0 MAX. QNH PRESSURE IN HPA 1024.5 1023.4 1024.1 1024.5 1022.8 1019.7 1018.1 1020.4 1024.0 1023.7 1027.1 1026.3 1027.1 DAY 9 1 27 1 16 2 11 31 25 30 13 20 MIN. QNH PRESSURE IN HPA 1008.4 1004.2 1002.1 1009.8 1012.5 1008.0 1010.0 1010.4 1013.2 1014.4 1013.8 1011.0 1002.1 DAY 6 25 2 15 9 16 31 18 21 11 9 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.2 823.7 823.4 823.4 824.6 822.0 821.4 821.0 825.1 826.4 827.7 826.3 824.1 MAX. QFE PRESSURE IN HPA 830.5 830.6 830.2 830.1 828.8 826.2 825.8 825.8 830.2 829.8 833.0 831.8 833.0 DAY 9 1 27 1 16 2 16 30 25 9 13 20 MIN. QFE PRESSURE IN HPA 817.2 814.9 811.8 817.8 820.0 816.3 817.6 818.4 821.3 822.0 822.2 818.9 811.8 DAY 29 11 2 15 9 16 31 1 14 11 16 11 MEAN QNH PRESSURE IN HPA 1017.0 1016.4 1016.1 1016.1 1017.5 1014.4 1013.7 1013.2 1018.0 1019.7 1021.2 1019.5 1016.9 MAX. QNH PRESSURE IN HPA 1024.5 1024.6 1024.1 1024.0 1022.5 1019.4 1018.9 1018.9 1024.1 1023.7 1027.4 1026.0 1027.4 DAY 9 1 27 1 16 2 16 30 25 9 13 20 MIN. QNH PRESSURE IN HPA 1008.7 1006.0 1002.3 1009.4 1012.0 1007.6 1009.2 1010.1 1013.6 1014.4 1014.6 1010.7 1002.3 DAY 29 11 2 15 9 16 31 1 14 11 16 11 MEAN QFF PRESSURE IN HPA 1027.3 1025.2 1017.7 1009.9 1008.3 1001.4 998.6 998.8 1008.0 1014.2 1019.6 1024.1 1012.8 MAX. QFF PRESSURE IN HPA 1044.7 1042.9 1028.7 1019.4 1016.2 1008.0 1004.4 1006.3 1016.8 1022.1 1027.0 1037.2 1044.7 DAY 9 1 4 1 16 1 16 30 25 30 12 20 MIN. QFF PRESSURE IN HPA 1008.0 1008.2 1004.9 1002.0 1000.9 993.9 993.4 995.0 1002.0 1005.4 1011.5 1014.6 993.4 DAY 29 11 2 14 9 16 31 1 3 4 16 7 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 824.8 823.4 824.8 823.8 825.3 ****** 822.2 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 831.0 828.6 829.8 831.0 830.1 ****** 826.0 ****** ****** ****** ****** ****** ****** DAY 9 3 27 1 16 ** 17 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 817.5 816.3 812.6 816.6 822.0 ****** 818.6 ****** ****** ****** ****** ****** ****** DAY 16 25 18 15 9 ** 31 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.7 1016.1 1017.7 1016.5 1018.3 ****** 1014.6 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.1 1022.2 1023.7 1025.1 1024.0 ****** 1019.1 ****** ****** ****** ****** ****** ****** DAY 9 3 27 1 16 ** 17 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1009.1 1007.6 1003.3 1008.0 1014.4 ****** 1010.4 ****** ****** ****** ****** ****** ****** DAY 16 25 18 15 9 ** 31 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1028.1 1024.4 1018.4 1009.4 1008.9 ****** 998.5 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1043.6 1037.8 1028.4 1019.8 1018.0 ****** 1002.9 ****** ****** ****** ****** ****** ****** DAY 9 3 7 1 16 ** 17 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1015.2 1010.7 1003.8 1001.0 1002.9 ****** 994.5 ****** ****** ****** ****** ****** ****** DAY 16 25 18 15 9 ** 31 ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.3 2.8 8.3 12.9 17.2 22.5 27.2 26.9 21.0 13.2 7.8 4.7 13.6 MINIMUN AIR TEMPERATURE (C) -7.5 -3.3 0.7 4.6 8.0 11.8 15.3 12.3 5.9 1.3 -1.7 -2.7 3.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 23 12 5 2 0 0 0 0 0 0 13 17 72 DAYS WITH FREEZING MIN.<= 0 26 24 17 6 2 0 0 0 4 20 21 24 144 TEMPERATURE RECORDS LOWEST(C) -23.0 -11.0 -7.0 -8.0 -1.0 8.0 12.0 8.0 -2.0 -2.0 -9.0 -8.0 -23.0 DAY 2 4 5 2 2 11 2 27 25 19 26 10 MAXIMUM AIR TEMPERATURE (C) 3.9 7.4 13.5 18.1 22.3 28.3 34.1 34.9 29.6 20.0 15.2 10.9 19.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 12 30 31 19 0 0 0 92 DAYS WITH MAXIMUM TEMP. <= 0 8 1 0 0 0 0 0 0 0 0 0 1 10 TEMPERATURE RECORDS HIGHEST(C) 11.0 11.0 21.0 26.0 29.0 34.0 40.0 39.0 33.0 25.0 20.0 15.0 40.0 DAY 11 8 24 21 27 24 17 19 1 1 1 16 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 10.7 12.8 13.5 14.3 16.5 18.8 22.6 23.7 18.7 16.9 13.6 16.1 MEAN DAILY TEMP. (MDT) (C) -1.8 2.0 7.1 11.3 15.1 20.0 24.7 23.6 17.7 10.7 6.7 4.1 11.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.5 21.5 115.5 80.5 1.5 0.0 0.0 0.0 221.5 HEATING DEG. DAYS(BASE 18 0C) 614.5 447.5 338.0 192.5 98.0 5.5 0.0 0.0 40.5 227.5 338.0 431.0 2733.0 DEWPOINT (MEAN C) -4.9 -2.7 0.0 2.4 5.3 8.9 10.5 9.5 4.4 3.7 -2.8 -2.5 2.6 MIXING RATIO (G/KG) 3.43 3.91 4.78 5.77 6.93 8.91 9.83 9.27 6.53 6.19 3.97 3.94 6.12 VAPOUR PRESSURE (HPA) 4.53 5.15 6.28 7.56 9.09 11.61 12.78 12.07 8.60 8.17 5.24 5.20 8.02 SATURATION DEF. (HPA) 1.53 2.66 5.43 8.51 11.76 17.27 25.75 26.27 19.21 8.15 6.26 3.82 11.39 RELATIVE HUMIDITY (MEAN %) 78 69 60 54 50 46 38 37 38 57 52 64 54 RELATIVE HUMIDITY (MAX. %) 90 88 83 82 78 77 64 66 71 88 80 86 79 RELATIVE HUMIDITY (MIN. %) 65 53 45 37 34 30 25 23 23 40 31 45 38 RELATIVE HUMIDITY (MEAN% 03UTC) 90 88 81 81 77 77 64 65 70 87 78 84 79 RELATIVE HUMIDITY (MEAN% 09UTC) 76 58 51 43 38 34 28 27 26 48 40 51 43 RELATIVE HUMIDITY (MEAN% 15UTC) 72 66 53 45 42 35 30 26 28 47 42 58 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 68.0 63.8 42.7 42.3 29.8 3.7 0.0 0.0 0.0 36.9 12.7 34.3 334.2 DAYS WITH PRECIPITATION >=10 1 2 1 1 1 0 0 0 0 1 0 2 9 DAYS WITH PRECIPITATION >= 5 4 6 3 2 2 0 0 0 0 2 1 2 22 DAYS WITH PRECIPITATION >= 1 9 10 11 8 5 2 0 0 0 5 4 5 59 DAYS WITH PRECIPITATION 9 11 13 12 6 4 0 0 0 9 6 6 76 GREATEST DAILY PRECIPITATION 41.0 21.0 11.0 23.0 12.0 2.0 0.0 0.0 0.0 20.0 6.0 15.0 41.0 DAY 13 9 27 11 6 29 ** ** ** 13 30 31 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 0 1 0 2 DAYS WITH SNOW OR SLEET 5 3 2 1 0 0 0 0 0 0 1 2 14 DAYS WITH DUST 0 0 2 6 8 8 2 3 3 7 4 1 44 WIND DIRECTION (PREVAILING) 225 180 180 225 225 225 135 225 225 90 180 225 225 PREVAILING WIND SPEED(KNOTS) 15.5 8.8 12.0 13.5 11.9 10.6 10.1 9.7 8.9 9.5 14.4 10.6 11.0 PREVAILING WIND PERCENT 3.9 12.7 23.7 20.7 25.8 16.7 6.7 8.8 12.3 6.7 10.1 8.1 11.5 CALMS PERCENT OF WIND 83.2 57.7 36.5 42.7 46.5 56.0 71.3 71.1 58.3 74.2 72.6 63.4 61.5 NO. OF WIND OBSERVATION 155 142 156 150 155 150 164 159 163 163 179 186 1922 VECTOR WIND DIRECTION (MEAN) 230 228 203 221 233 211 146 165 194 56 204 231 214 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.7 4.8 5.2 4.4 2.1 0.8 1.0 0.4 0.2 2.2 1.3 1.9 WIND STEADINESES (MEAN %) 50.0 42.5 66.7 73.2 73.3 46.7 34.8 34.5 10.5 9.5 68.7 43.3 47.5 WIND SPEED (MEAN KNOTS) 2.0 4.0 7.2 7.1 6.0 4.5 2.3 2.9 3.8 2.1 3.2 3.0 4.0 FASTEST WIND DIRECTION 210 280 180 180 250 190 130 280 280 270 190 210 210 FASTEST WIND SPEED (KNOTS) 26 20 25 22 20 24 16 18 20 20 25 20 26 DAY 25 3 24 8 1 16 25 9 19 5 5 6 DAYS WITH SKY CLEAR (0-2)/8 14 8 10 10 13 20 30 26 30 20 17 11 209 DAYS WITH P.CLOUDY (3-6)/8 14 13 12 14 14 10 1 5 0 5 10 15 113 DAYS WITH CLOUDY (7-8)/8 3 7 9 6 4 0 0 0 0 6 3 5 43 DAYS WITH VISIBILITY =< 2 KM 7 2 0 2 0 0 0 0 0 1 1 4 17 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** 232.8 211.8 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.8 823.9 823.0 823.2 824.6 823.3 822.2 822.9 828.4 830.3 827.0 827.3 825.2 MAX. QFE PRESSURE IN HPA 834.4 830.0 831.6 832.2 830.7 829.4 828.2 827.5 834.0 836.4 832.8 834.1 836.4 DAY-HOUR 9- 6 7- 6 5- 6 19- 6 22- 6 10- 6 29- 6 3- 6 27- 6 26- 6 16- 6 12- 6 MIN. QFE PRESSURE IN HPA 818.0 818.6 815.5 811.4 813.0 818.2 816.5 818.7 824.0 825.2 816.2 821.0 811.4 DAY-HOUR 3- 3 24-12 12-15 30-15 1- 3 15-15 19-15 23-12 29-15 16-15 5-12 25-18 MEAN QNH PRESSURE IN HPA 1018.9 1016.7 1015.6 1015.8 1017.5 1015.9 1014.7 1015.5 1021.9 1024.2 1020.4 1020.7 1018.1 MAX. QNH PRESSURE IN HPA 1029.1 1023.9 1025.8 1026.5 1024.7 1023.2 1021.8 1020.9 1028.6 1031.5 1027.2 1028.7 1031.5 DAY-HOUR 9- 6 7- 6 5- 6 19- 6 22- 6 10- 6 29- 6 3- 6 27- 6 26- 6 16- 6 12- 6 MIN. QNH PRESSURE IN HPA 1009.7 1010.4 1006.7 1001.8 1003.7 1009.9 1007.9 1010.5 1016.8 1018.2 1007.5 1013.2 1001.8 DAY-HOUR 3- 3 24-12 12-15 30-15 1- 3 15-15 19-15 23-12 29-15 16-15 5-12 25-18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1031.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1- 3 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.5 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 25-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 826.0 824.1 823.2 823.6 824.7 824.1 822.8 823.6 828.8 830.4 827.3 827.5 825.5 MAX. QFE PRESSURE IN HPA 833.6 829.2 831.0 831.3 829.7 829.1 828.0 827.4 833.0 835.3 832.2 833.3 835.3 DAY 9 7 5 19 21 10 30 4 27 26 16 1 MIN. QFE PRESSURE IN HPA 818.0 820.4 816.0 815.0 813.0 819.9 818.8 820.5 826.6 826.7 820.7 821.2 813.0 DAY 3 25 13 30 1 4 19 13 12 11 5 26 MEAN QNH PRESSURE IN HPA 1019.1 1016.8 1015.8 1016.3 1017.6 1016.8 1015.3 1016.3 1022.5 1024.3 1020.7 1020.9 1018.6 MAX. QNH PRESSURE IN HPA 1028.2 1022.9 1025.1 1025.4 1023.5 1022.8 1021.5 1020.8 1027.4 1030.2 1026.5 1027.8 1030.2 DAY 9 7 5 19 21 10 30 4 27 26 16 1 MIN. QNH PRESSURE IN HPA 1009.7 1012.5 1007.3 1006.1 1003.7 1011.9 1010.6 1012.6 1019.9 1020.0 1012.9 1013.5 1003.7 DAY 3 25 13 30 1 4 19 13 12 11 5 26 MEAN QFF PRESSURE IN HPA 1024.7 1019.1 1014.1 1011.4 1009.8 1005.3 1000.3 1002.4 1013.2 1019.8 1019.8 1021.8 1013.5 MAX. QFF PRESSURE IN HPA 1041.3 1026.7 1029.5 1021.3 1017.8 1015.0 1008.1 1006.2 1021.8 1028.7 1029.3 1031.3 1041.3 DAY 9 4 5 19 2 10 30 31 27 29 26 1 MIN. QFF PRESSURE IN HPA 1011.0 1012.6 1003.9 999.4 1001.6 998.2 993.3 998.0 1008.4 1012.1 1007.8 1013.7 993.3 DAY 12 9 12 30 27 4 19 13 12 11 5 29 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.8 824.8 823.7 824.3 825.3 824.2 823.2 824.1 829.5 831.3 828.1 828.3 826.1 MAX. QFE PRESSURE IN HPA 834.4 830.0 831.6 832.2 830.7 829.4 828.2 827.5 834.0 836.4 832.8 834.1 836.4 DAY 9 7 5 19 22 10 29 3 27 26 16 12 MIN. QFE PRESSURE IN HPA 818.0 821.4 816.9 814.3 813.5 820.3 819.8 820.2 827.1 827.8 820.4 823.6 813.5 DAY 3 25 12 30 1 4 2 13 12 16 5 26 MEAN QNH PRESSURE IN HPA 1020.1 1017.7 1016.5 1017.1 1018.4 1017.1 1015.8 1016.8 1023.3 1025.4 1021.6 1021.9 1019.3 MAX. QNH PRESSURE IN HPA 1029.1 1023.9 1025.8 1026.5 1024.7 1023.2 1021.8 1020.9 1028.6 1031.5 1027.2 1028.7 1031.5 DAY 9 7 5 19 22 10 29 3 27 26 16 12 MIN. QNH PRESSURE IN HPA 1009.7 1013.7 1008.4 1005.3 1004.3 1012.4 1011.8 1012.3 1020.4 1021.3 1012.5 1016.3 1004.3 DAY 3 25 12 30 1 4 2 13 12 16 5 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.3 1022.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1030.9 1031.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 25 12 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.4 1015.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 5 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.3 824.2 823.3 823.4 824.9 823.4 822.4 823.3 828.6 830.7 827.2 827.8 825.5 MAX. QFE PRESSURE IN HPA 834.0 828.6 830.8 832.0 830.2 828.3 827.7 827.2 833.0 835.7 832.0 833.6 835.7 DAY 9 7 5 19 21 10 29 3 27 26 15 12 MIN. QFE PRESSURE IN HPA 818.3 820.2 816.2 813.0 814.3 819.7 818.8 819.7 826.2 826.8 816.5 823.7 813.0 DAY 3 25 12 30 1 18 19 12 29 16 5 18 MEAN QNH PRESSURE IN HPA 1019.5 1017.0 1015.9 1016.1 1017.9 1016.1 1014.9 1015.9 1022.3 1024.7 1020.5 1021.2 1018.5 MAX. QNH PRESSURE IN HPA 1028.6 1022.2 1024.8 1026.3 1024.1 1021.9 1021.2 1020.6 1027.4 1030.6 1026.3 1028.2 1030.6 DAY 9 7 5 19 21 10 29 3 27 26 15 12 MIN. QNH PRESSURE IN HPA 1010.0 1012.3 1007.5 1003.7 1005.3 1011.7 1010.6 1011.7 1019.4 1020.1 1007.9 1016.4 1003.7 DAY 3 25 12 30 1 18 19 12 29 16 5 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.0 823.4 822.3 822.4 824.2 822.4 821.2 821.9 827.4 829.4 826.1 826.5 824.3 MAX. QFE PRESSURE IN HPA 832.9 829.1 829.5 831.1 828.6 827.1 826.4 825.6 831.9 834.6 830.7 832.3 834.6 DAY 9 3 5 19 21 10 29 3 27 26 15 1 MIN. QFE PRESSURE IN HPA 818.0 818.6 815.7 811.8 816.3 818.5 817.5 818.7 824.4 825.6 816.2 822.2 811.8 DAY 3 24 12 30 1 18 19 23 29 16 5 25 MEAN QNH PRESSURE IN HPA 1017.9 1016.0 1014.7 1014.8 1017.0 1014.9 1013.5 1014.3 1020.8 1023.2 1019.3 1019.7 1017.2 MAX. QNH PRESSURE IN HPA 1027.3 1022.8 1023.3 1025.2 1022.2 1020.4 1019.6 1018.7 1026.1 1029.3 1024.7 1026.6 1029.3 DAY 9 3 5 19 21 10 29 3 27 26 15 1 MIN. QNH PRESSURE IN HPA 1009.7 1010.4 1006.9 1002.3 1007.6 1010.3 1009.1 1010.5 1017.2 1018.7 1007.5 1014.6 1002.3 DAY 3 24 12 30 1 18 19 23 29 16 5 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.1 823.4 822.6 822.2 824.1 822.3 820.7 821.6 827.3 829.4 826.6 826.6 824.3 MAX. QFE PRESSURE IN HPA 832.7 826.8 830.1 830.6 829.4 828.1 826.1 825.2 831.0 834.6 831.0 832.6 834.6 DAY 9 6 8 19 22 9 29 3 27 26 15 1 MIN. QFE PRESSURE IN HPA 818.8 819.2 815.5 811.4 817.3 818.2 816.5 818.7 824.0 825.2 819.2 821.5 811.4 DAY 3 25 12 30 16 15 19 23 29 16 5 25 MEAN QNH PRESSURE IN HPA 1018.1 1016.1 1015.1 1014.6 1016.9 1014.8 1012.9 1013.9 1020.6 1023.2 1019.8 1019.9 1017.1 MAX. QNH PRESSURE IN HPA 1027.1 1020.1 1024.0 1024.6 1023.2 1021.6 1019.3 1018.2 1025.1 1029.3 1025.1 1027.0 1029.3 DAY 9 6 8 19 22 9 29 3 27 26 15 1 MIN. QNH PRESSURE IN HPA 1010.6 1011.1 1006.7 1001.8 1008.8 1009.9 1007.9 1010.5 1016.8 1018.2 1011.1 1013.8 1001.8 DAY 3 25 12 30 16 15 19 23 29 16 5 25 MEAN QFF PRESSURE IN HPA 1023.5 1018.1 1013.3 1009.6 1008.8 1003.2 997.6 999.7 1011.2 1018.6 1018.9 1020.7 1011.9 MAX. QFF PRESSURE IN HPA 1039.7 1024.1 1026.4 1019.4 1017.5 1013.0 1005.2 1004.3 1019.2 1025.9 1028.2 1029.7 1039.7 DAY 9 23 5 19 2 9 29 31 27 26 24 1 MIN. QFF PRESSURE IN HPA 1009.7 1013.4 1004.8 999.4 1001.1 995.7 990.9 995.8 1006.0 1011.8 1005.6 1013.7 990.9 DAY 11 25 12 30 16 4 18 11 12 11 5 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 827.0 827.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 831.4 832.8 ****** DAY ** ** ** ** ** ** ** ** ** ** 15 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 821.6 821.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 5 25 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.4 1020.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.5 1027.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 15 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.9 1013.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 5 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.0 1021.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1027.2 1028.9 ****** DAY ** ** ** ** ** ** ** ** ** ** 7 1 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1008.3 1012.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 5 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.3 -5.5 3.2 14.7 18.1 23.7 26.2 25.5 21.3 13.0 4.3 -8.0 11.4 MINIMUN AIR TEMPERATURE (C) -5.9 -12.7 -3.2 5.0 8.3 8.5 11.3 10.1 7.2 5.1 -1.6 -13.0 1.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 19 25 13 0 0 0 0 0 0 0 9 27 93 DAYS WITH FREEZING MIN.<= 0 29 27 26 4 0 0 0 0 0 1 18 31 136 TEMPERATURE RECORDS LOWEST(C) -13.0 -30.0 -10.4 -2.0 3.0 5.0 8.0 7.6 3.0 0.0 -7.4 -24.6 -30.0 DAY 21 19 8 4 8 2 5 30 26 11 18 12 MAXIMUM AIR TEMPERATURE (C) 5.6 0.3 8.3 20.6 24.0 30.5 33.3 33.5 28.4 18.3 9.3 -3.3 17.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 18 30 30 10 0 0 0 88 DAYS WITH MAXIMUM TEMP. <= 0 2 15 0 0 0 0 0 0 0 0 0 21 38 TEMPERATURE RECORDS HIGHEST(C) 10.4 7.2 14.8 25.6 28.8 34.0 36.0 36.0 32.6 23.0 17.6 6.2 36.0 DAY 11 3 23 22 2 17 18 3 1 1 21 28 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 13.0 11.5 15.6 15.7 22.0 22.0 23.4 21.2 13.2 10.9 9.7 15.8 MEAN DAILY TEMP. (MDT) (C) -0.1 -6.2 2.5 12.8 16.2 19.5 22.3 21.8 17.8 11.7 3.8 -8.1 9.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 2.3 44.2 30.0 0.0 0.0 0.0 0.0 76.5 HEATING DEG. DAYS(BASE 18 0C) 561.8 678.0 479.7 156.4 63.3 3.8 0.0 0.0 29.9 195.6 424.7 810.1 3403.2 DEWPOINT (MEAN C) -4.7 -9.0 -2.8 2.8 6.5 5.5 4.5 5.5 3.7 5.4 -0.8 -10.4 0.5 MIXING RATIO (G/KG) 3.38 2.53 3.90 5.87 7.48 6.95 6.57 6.98 6.19 6.92 4.47 2.35 5.30 VAPOUR PRESSURE (HPA) 4.45 3.33 5.12 7.71 9.83 9.10 8.59 9.12 8.15 9.10 5.90 3.11 6.96 SATURATION DEF. (HPA) 2.12 1.10 3.01 10.01 11.96 22.27 27.92 26.48 19.28 6.70 2.86 0.70 11.20 RELATIVE HUMIDITY (MEAN %) 72 78 68 50 51 35 28 32 35 64 72 84 56 RELATIVE HUMIDITY (MAX. %) 88 90 88 81 81 65 54 62 63 90 91 91 79 RELATIVE HUMIDITY (MIN. %) 52 63 51 31 33 20 16 17 21 46 55 76 40 RELATIVE HUMIDITY (MEAN% 03UTC) 86 87 86 81 80 66 54 62 62 89 91 89 78 RELATIVE HUMIDITY (MEAN% 09UTC) 63 72 61 38 40 26 20 23 25 54 64 79 47 RELATIVE HUMIDITY (MEAN% 15UTC) 67 73 58 37 43 23 20 20 27 57 71 85 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.5 60.6 82.2 22.2 34.8 0.5 0.0 0.0 1.4 66.5 48.3 52.7 408.7 DAYS WITH PRECIPITATION >=10 0 2 4 0 0 0 0 0 0 2 3 3 14 DAYS WITH PRECIPITATION >= 5 3 6 7 1 4 0 0 0 0 5 4 5 35 DAYS WITH PRECIPITATION >= 1 8 10 10 7 9 0 0 0 1 9 6 6 66 DAYS WITH PRECIPITATION 9 12 12 8 13 1 0 0 1 15 7 8 86 GREATEST DAILY PRECIPITATION 9.0 13.4 19.0 6.0 6.3 0.5 0.0 0.0 1.4 27.0 18.0 15.0 27.0 DAY 6 21 18 16 6 8 ** ** 30 9 1 30 DAY WITH THUNDER STORM 0 0 1 1 5 0 0 0 0 3 0 0 10 DAYS WITH SNOW OR SLEET 6 11 7 0 0 0 0 0 0 0 4 5 33 DAYS WITH DUST 1 0 0 2 6 7 5 6 6 5 0 0 38 WIND DIRECTION (PREVAILING) 270 90 225 225 180 225 225 45 225 225 90 270 225 PREVAILING WIND SPEED(KNOTS) 8.9 5.8 9.5 11.1 9.0 9.8 7.1 10.0 8.4 7.8 11.7 7.6 9.2 PREVAILING WIND PERCENT 7.7 6.0 9.4 13.3 13.5 12.7 8.4 7.1 12.0 6.5 4.0 3.2 6.8 CALMS PERCENT OF WIND 75.1 76.8 68.0 60.7 50.3 64.0 69.0 71.6 74.7 80.6 82.7 92.9 72.2 NO. OF WIND OBSERVATION 181 168 181 150 155 150 155 155 150 155 150 155 1905 VECTOR WIND DIRECTION (MEAN) 205 211 224 211 211 231 163 21 250 221 108 261 217 VECTOR WIND MAGNITUDE(KNOTS) 1.1 0.6 1.7 2.5 2.1 2.0 0.8 0.9 1.3 0.8 0.4 0.2 0.9 WIND STEADINESES (MEAN %) 44.0 33.3 63.0 64.1 48.8 66.7 34.8 40.9 68.4 57.1 33.3 40.0 39.1 WIND SPEED (MEAN KNOTS) 2.5 1.8 2.7 3.9 4.3 3.0 2.3 2.2 1.9 1.4 1.2 0.5 2.3 FASTEST WIND DIRECTION 190 210 180 180 220 120 210 30 210 210 90 270 190 FASTEST WIND SPEED (KNOTS) 39 16 19 29 31 21 23 16 17 14 19 12 39 DAY 9 4 11 8 20 1 6 16 23 20 24 28 DAYS WITH SKY CLEAR (0-2)/8 12 11 11 7 8 27 29 31 23 11 11 7 188 DAYS WITH P.CLOUDY (3-6)/8 12 6 12 17 20 3 2 0 6 14 13 11 116 DAYS WITH CLOUDY (7-8)/8 7 11 8 6 3 0 0 0 1 6 6 13 61 DAYS WITH VISIBILITY =< 2 KM 3 6 5 2 2 0 0 1 1 2 7 21 50 DURATION OF SUNSHINE HOURS 161.5 76.2 144.8 213.3 264.5 337.6 374.6 364.9 289.8 198.7 148.6 70.6 2645.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.4 822.4 822.7 825.3 827.4 823.9 821.8 821.8 827.4 827.5 826.9 827.1 824.9 MAX. QFE PRESSURE IN HPA 830.9 828.5 831.3 833.0 832.9 829.8 827.0 826.5 831.2 834.0 836.4 835.3 836.4 DAY-HOUR 21- 6 11- 6 31- 6 4- 9 12- 6 6- 6 20- 6 28- 6 7- 6 24- 9 18- 6 10- 6 MIN. QFE PRESSURE IN HPA 815.4 812.6 813.6 818.8 823.0 817.9 815.9 817.4 822.0 822.2 820.5 820.0 812.6 DAY-HOUR 28-15 14- 3 25-12 27-12 24-12 14-15 31-15 7-12 13-15 9-12 8-12 6-12 MEAN QNH PRESSURE IN HPA 1017.2 1014.9 1015.2 1018.3 1020.8 1016.7 1014.2 1014.2 1020.8 1020.9 1020.2 1020.4 1017.8 MAX. QNH PRESSURE IN HPA 1025.0 1022.1 1025.4 1027.4 1027.3 1023.7 1020.3 1019.7 1025.3 1028.6 1031.5 1030.2 1031.5 DAY-HOUR 21- 6 11- 6 31- 6 4- 9 12- 6 6- 6 20- 6 28- 6 7- 6 24- 9 18- 6 10- 6 MIN. QNH PRESSURE IN HPA 1006.6 1003.3 1004.4 1010.6 1015.6 1009.5 1007.2 1008.9 1014.4 1014.6 1012.6 1012.0 1003.3 DAY-HOUR 28-15 14- 3 25-12 27-12 24-12 14-15 31-15 7-12 13-15 9-12 8-12 6-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.3 822.0 822.7 825.6 827.7 824.7 822.7 822.7 828.0 827.7 826.8 827.1 825.2 MAX. QFE PRESSURE IN HPA 828.6 827.8 829.8 831.7 832.5 829.6 826.1 826.2 830.8 833.0 835.3 833.8 835.3 DAY 21 11 5 4 12 6 8 28 7 25 19 10 MIN. QFE PRESSURE IN HPA 817.3 812.6 814.6 819.7 823.4 821.0 818.6 818.7 824.4 823.0 821.1 821.9 812.6 DAY 29 14 25 27 24 26 30 1 13 1 9 7 MEAN QNH PRESSURE IN HPA 1017.1 1014.4 1015.2 1018.7 1021.2 1017.6 1015.2 1015.2 1021.5 1021.1 1020.1 1020.5 1018.2 MAX. QNH PRESSURE IN HPA 1022.2 1021.3 1023.7 1025.9 1026.8 1023.4 1019.3 1019.4 1024.8 1027.4 1030.2 1028.4 1030.2 DAY 21 11 5 4 12 6 8 28 7 25 19 10 MIN. QNH PRESSURE IN HPA 1008.8 1003.3 1005.6 1011.7 1016.1 1013.2 1010.4 1010.5 1017.2 1015.6 1013.3 1014.3 1003.3 DAY 29 14 25 27 24 26 30 1 13 1 9 7 MEAN QFF PRESSURE IN HPA 1020.9 1022.5 1016.7 1012.5 1012.5 1005.6 1001.6 1002.2 1011.8 1015.8 1021.0 1031.3 1014.5 MAX. QFF PRESSURE IN HPA 1031.2 1039.1 1029.6 1023.0 1018.5 1012.1 1006.6 1007.4 1016.6 1023.4 1033.3 1047.3 1047.3 DAY 21 20 5 4 6 6 8 27 29 25 18 10 MIN. QFF PRESSURE IN HPA 1009.5 1007.7 1003.5 1000.9 1006.6 1000.5 997.0 996.9 1007.3 1009.3 1009.4 1014.9 996.9 DAY 29 4 25 27 23 14 29 7 11 7 8 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.2 822.9 823.5 826.4 828.3 824.9 822.9 823.2 828.6 828.4 827.9 828.0 825.8 MAX. QFE PRESSURE IN HPA 830.9 828.5 831.3 832.9 832.9 829.8 827.0 826.5 831.2 833.5 836.4 835.3 836.4 DAY 21 11 31 4 12 6 20 28 7 24 18 10 MIN. QFE PRESSURE IN HPA 819.2 814.3 816.1 819.4 823.9 821.0 818.8 819.0 824.8 823.5 821.5 822.8 814.3 DAY 29 14 25 27 24 26 31 7 13 9 8 6 MEAN QNH PRESSURE IN HPA 1018.2 1015.4 1016.1 1019.6 1021.9 1017.8 1015.5 1015.8 1022.2 1022.0 1021.4 1021.6 1019.0 MAX. QNH PRESSURE IN HPA 1025.0 1022.1 1025.4 1027.3 1027.3 1023.7 1020.3 1019.7 1025.3 1028.0 1031.5 1030.2 1031.5 DAY 21 11 31 4 12 6 20 28 7 24 18 10 MIN. QNH PRESSURE IN HPA 1011.1 1005.3 1007.4 1011.3 1016.7 1013.2 1010.6 1010.8 1017.7 1016.2 1013.8 1015.3 1005.3 DAY 29 14 25 27 24 26 31 7 13 9 8 6 MEAN QFF PRESSURE IN HPA 1023.1 1024.0 1017.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.5 1040.0 1030.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 21 19 5 ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1013.1 1008.8 1006.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 9 4 25 ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 824.8 822.9 823.3 825.7 827.8 824.3 822.2 822.1 827.7 827.9 827.2 827.4 825.3 MAX. QFE PRESSURE IN HPA 830.7 828.3 830.9 833.0 832.5 829.6 826.1 825.8 830.5 834.0 835.1 834.1 835.1 DAY 21 28 31 4 12 6 20 28 6 24 18 10 MIN. QFE PRESSURE IN HPA 818.1 815.0 814.4 819.8 823.6 820.3 817.6 818.0 823.7 823.2 821.4 821.5 814.4 DAY 31 4 25 27 24 14 31 7 13 9 8 6 MEAN QNH PRESSURE IN HPA 1017.7 1015.5 1015.9 1018.7 1021.3 1017.1 1014.7 1014.6 1021.2 1021.4 1020.6 1020.8 1018.3 MAX. QNH PRESSURE IN HPA 1024.7 1021.9 1025.0 1027.4 1026.8 1023.4 1019.3 1018.9 1024.5 1028.6 1029.9 1028.7 1029.9 DAY 21 28 31 4 12 6 20 28 6 24 18 10 MIN. QNH PRESSURE IN HPA 1009.8 1006.1 1005.4 1011.8 1016.3 1012.4 1009.2 1009.7 1016.4 1015.8 1013.7 1013.8 1005.4 DAY 31 4 25 27 24 14 31 7 13 9 8 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.6 822.0 822.1 824.6 826.7 823.1 821.0 820.7 826.4 826.7 826.2 826.3 824.1 MAX. QFE PRESSURE IN HPA 828.7 827.4 829.4 830.2 831.2 828.5 824.7 824.1 829.7 832.0 834.4 831.7 834.4 DAY 21 28 15 4 10 6 20 28 29 25 18 10 MIN. QFE PRESSURE IN HPA 816.6 815.5 813.6 818.8 823.0 819.1 816.1 817.4 822.1 822.2 820.5 820.0 813.6 DAY 28 4 25 27 24 14 31 7 13 9 8 6 MEAN QNH PRESSURE IN HPA 1016.3 1014.4 1014.5 1017.4 1020.0 1015.7 1013.2 1012.8 1019.7 1020.0 1019.4 1019.5 1016.9 MAX. QNH PRESSURE IN HPA 1022.3 1020.8 1023.2 1024.1 1025.3 1022.1 1017.6 1016.9 1023.5 1026.3 1029.1 1025.9 1029.1 DAY 21 28 15 4 10 6 20 28 29 25 18 10 MIN. QNH PRESSURE IN HPA 1008.0 1006.7 1004.4 1010.6 1015.6 1011.0 1007.4 1008.9 1014.5 1014.6 1012.6 1012.0 1004.4 DAY 28 4 25 27 24 14 31 7 13 9 8 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 823.7 822.2 822.0 824.3 826.5 822.6 820.5 820.4 826.2 826.8 826.3 826.7 824.0 MAX. QFE PRESSURE IN HPA 828.9 827.4 829.4 829.3 831.2 828.1 824.4 823.6 830.1 831.6 834.7 831.9 834.7 DAY 18 28 15 4 10 6 20 28 29 25 18 18 MIN. QFE PRESSURE IN HPA 815.4 814.9 814.1 819.0 823.2 817.9 815.9 817.4 822.0 822.4 820.5 820.0 814.1 DAY 28 13 25 18 24 14 31 7 13 1 25 6 MEAN QNH PRESSURE IN HPA 1016.5 1014.6 1014.5 1017.2 1019.8 1015.2 1012.6 1012.5 1019.4 1020.1 1019.5 1019.9 1016.8 MAX. QNH PRESSURE IN HPA 1022.6 1020.8 1023.2 1023.1 1025.3 1021.6 1017.2 1016.3 1024.0 1025.8 1029.5 1026.1 1029.5 DAY 18 28 15 4 10 6 20 28 29 25 18 18 MIN. QNH PRESSURE IN HPA 1006.6 1006.0 1005.0 1010.8 1015.8 1009.5 1007.2 1008.9 1014.4 1014.9 1012.6 1012.0 1005.0 DAY 28 13 25 18 24 14 31 7 13 1 25 6 MEAN QFF PRESSURE IN HPA 1020.2 1022.6 1015.7 1010.9 1011.0 1003.1 998.9 999.2 1009.7 1014.8 1020.4 1030.8 1013.1 MAX. QFF PRESSURE IN HPA 1031.7 1035.7 1027.7 1019.6 1017.7 1010.5 1003.8 1004.1 1017.8 1021.1 1032.7 1044.3 1044.3 DAY 21 18 5 4 10 6 20 28 29 24 18 9 MIN. QFF PRESSURE IN HPA 1007.0 1010.4 1003.5 1001.7 1005.6 997.3 994.1 995.2 1005.1 1006.9 1009.7 1015.5 994.1 DAY 28 4 25 27 31 14 29 7 13 5 8 28 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 824.6 822.8 822.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 829.1 827.9 830.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 18 28 4 ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 815.4 813.5 816.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 31 13 25 ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.5 1015.4 1015.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1022.8 1021.4 1023.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 18 28 4 ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1006.6 1004.3 1007.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 31 13 25 ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1021.7 1024.0 1016.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1031.0 1041.5 1029.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 21 19 4 ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.4 1008.6 1005.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 9 13 24 ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -8.6 -6.6 2.2 10.4 17.3 23.5 27.3 27.4 21.4 14.0 9.8 0.9 11.6 MINIMUN AIR TEMPERATURE (C) -16.7 -13.3 -5.0 2.2 8.0 9.7 12.0 13.2 6.8 0.3 1.3 -4.3 1.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 27 24 18 1 0 0 0 0 0 1 2 17 90 DAYS WITH FREEZING MIN.<= 0 30 28 29 9 0 0 0 0 0 17 14 29 156 TEMPERATURE RECORDS LOWEST(C) -32.8 -26.0 -13.6 -7.8 2.4 5.2 8.0 6.0 2.0 -4.0 -5.2 -12.0 -32.8 DAY 29 1 1 2 3 8 7 29 30 22 6 22 MAXIMUM AIR TEMPERATURE (C) -3.0 -1.6 7.3 15.7 22.8 30.2 34.6 35.2 29.5 22.5 16.0 5.1 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 31 31 12 0 0 0 91 DAYS WITH MAXIMUM TEMP. <= 0 22 20 0 0 0 0 0 0 0 0 0 8 50 TEMPERATURE RECORDS HIGHEST(C) 8.0 6.8 17.4 20.8 27.0 35.0 38.4 38.8 35.0 27.4 22.0 15.2 38.8 DAY 1 19 28 30 23 17 13 9 2 2 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 13.7 11.7 12.3 13.5 14.8 20.5 22.6 22.0 22.7 22.2 14.7 9.4 16.7 MEAN DAILY TEMP. (MDT) (C) -9.9 -7.5 1.1 8.9 15.4 19.9 23.3 24.2 18.2 11.4 8.7 0.4 9.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 6.4 74.1 110.6 2.0 0.0 0.0 0.0 193.1 HEATING DEG. DAYS(BASE 18 0C) 864.2 713.1 523.2 271.7 79.5 2.2 0.0 0.0 27.9 203.9 280.4 546.7 3512.7 DEWPOINT (MEAN C) -11.4 -9.5 -3.0 2.0 6.4 6.3 7.1 6.1 3.1 -2.6 -1.4 -3.1 0.0 MIXING RATIO (G/KG) 2.25 2.47 3.85 5.45 7.55 7.41 7.78 7.40 5.94 3.88 4.25 3.80 5.17 VAPOUR PRESSURE (HPA) 2.96 3.25 5.07 7.16 9.89 9.70 10.16 9.66 7.80 5.13 5.62 5.03 6.79 SATURATION DEF. (HPA) 0.78 0.89 2.66 6.15 10.69 20.98 28.89 29.99 20.13 12.64 7.29 1.92 11.92 RELATIVE HUMIDITY (MEAN %) 81 81 72 60 54 37 32 30 34 35 50 77 54 RELATIVE HUMIDITY (MAX. %) 89 89 91 89 83 69 61 56 65 63 70 88 76 RELATIVE HUMIDITY (MIN. %) 72 72 56 43 34 22 18 16 19 21 35 64 39 RELATIVE HUMIDITY (MEAN% 03UTC) 84 87 89 89 82 69 61 56 65 63 69 87 75 RELATIVE HUMIDITY (MEAN% 09UTC) 80 79 67 50 42 28 22 21 25 25 41 74 46 RELATIVE HUMIDITY (MEAN% 15UTC) 82 82 65 50 44 24 21 21 22 28 44 74 46 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 59.0 29.4 54.0 47.4 49.6 1.7 0.0 0.0 0.0 0.0 22.0 49.2 312.3 DAYS WITH PRECIPITATION >=10 2 1 0 1 3 0 0 0 0 0 0 3 10 DAYS WITH PRECIPITATION >= 5 5 1 7 5 3 0 0 0 0 0 2 4 27 DAYS WITH PRECIPITATION >= 1 9 5 9 10 6 1 0 0 0 0 6 5 51 DAYS WITH PRECIPITATION 12 7 10 13 12 2 0 1 0 0 8 11 76 GREATEST DAILY PRECIPITATION 13.0 16.0 9.0 10.0 15.0 1.0 0.0 0.0 0.0 0.0 8.0 15.0 16.0 DAY 10 17 16 10 24 3 ** ** ** ** 26 9 DAY WITH THUNDER STORM 0 0 0 4 4 1 0 0 0 0 0 0 9 DAYS WITH SNOW OR SLEET 9 8 7 1 0 0 0 0 0 0 0 6 31 DAYS WITH DUST 0 0 0 1 5 8 3 10 2 7 0 0 36 WIND DIRECTION (PREVAILING) 180 270 270 225 180 225 225 180 225 225 225 90 225 PREVAILING WIND SPEED(KNOTS) 10.5 9.8 6.4 8.8 9.1 7.4 6.4 7.3 8.8 9.2 6.9 7.3 8.0 PREVAILING WIND PERCENT 3.9 10.0 9.0 12.7 11.0 8.7 3.2 7.1 3.3 8.4 7.3 5.8 5.5 CALMS PERCENT OF WIND 86.5 83.6 68.4 62.0 57.4 80.0 89.0 72.3 88.7 80.0 78.7 88.4 77.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 212 275 306 215 225 233 157 154 295 210 209 106 219 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.9 0.6 1.5 1.8 1.0 0.4 1.1 0.2 1.1 0.8 0.2 0.7 WIND STEADINESES (MEAN %) 44.4 69.2 28.6 45.5 50.0 66.7 50.0 50.0 22.2 61.1 53.3 22.2 41.2 WIND SPEED (MEAN KNOTS) 0.9 1.3 2.1 3.3 3.6 1.5 0.8 2.2 0.9 1.8 1.5 0.9 1.7 FASTEST WIND DIRECTION 190 270 100 170 320 180 100 290 240 210 270 270 320 FASTEST WIND SPEED (KNOTS) 19 19 16 19 21 19 16 16 12 19 14 12 21 DAY 2 21 15 19 2 12 16 2 13 2 18 29 DAYS WITH SKY CLEAR (0-2)/8 16 7 14 6 4 23 31 27 30 26 11 9 204 DAYS WITH P.CLOUDY (3-6)/8 6 11 7 17 18 7 0 4 0 5 14 9 98 DAYS WITH CLOUDY (7-8)/8 9 10 10 7 9 0 0 0 0 0 5 13 63 DAYS WITH VISIBILITY =< 2 KM 15 14 5 2 0 1 0 0 0 1 1 6 45 DURATION OF SUNSHINE HOURS 131.8 107.0 179.1 191.6 176.7 341.6 380.6 336.0 310.3 276.5 173.4 82.4 2687.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.2 824.8 824.2 824.9 825.3 824.5 822.3 821.8 824.8 828.5 829.8 827.9 825.3 MAX. QFE PRESSURE IN HPA 834.2 832.0 831.0 830.8 830.2 830.3 827.6 826.2 828.7 835.7 836.2 835.0 836.2 DAY-HOUR 8- 6 11- 6 27- 6 29- 3 17- 6 1- 6 1- 6 18- 9 26- 6 28- 6 2- 6 4- 6 MIN. QFE PRESSURE IN HPA 813.3 812.6 812.4 819.6 819.5 818.7 816.2 816.5 820.0 823.0 822.0 821.2 812.4 DAY-HOUR 24- 3 17-15 5-12 23- 6 29-12 28-15 26-15 4-15 10-15 4-12 12-15 11-15 MEAN QNH PRESSURE IN HPA 1018.2 1017.7 1016.9 1017.8 1018.3 1017.3 1014.8 1014.2 1017.7 1022.1 1023.6 1021.4 1018.3 MAX. QNH PRESSURE IN HPA 1028.9 1026.3 1025.1 1024.8 1024.1 1024.2 1021.0 1019.4 1022.3 1030.6 1031.2 1029.8 1031.2 DAY-HOUR 8- 6 11- 6 27- 6 29- 3 17- 6 1- 6 1- 6 18- 9 26- 6 28- 6 2- 6 4- 6 MIN. QNH PRESSURE IN HPA 1004.1 1003.3 1003.0 1011.6 1011.4 1010.5 1007.5 1007.9 1012.0 1015.6 1014.4 1013.5 1003.0 DAY-HOUR 24- 3 17-15 5-12 23- 6 29-12 28-15 26-15 4-15 10-15 4-12 12-15 11-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.0 824.6 824.3 824.9 825.6 825.2 823.1 822.6 825.5 829.0 830.1 828.1 825.7 MAX. QFE PRESSURE IN HPA 833.9 831.4 830.1 830.8 829.9 830.0 827.2 825.6 827.9 834.9 834.9 834.1 834.9 DAY 8 11 27 29 17 1 1 18 26 28 2 4 MIN. QFE PRESSURE IN HPA 813.3 815.3 815.9 820.2 821.7 821.0 817.7 818.7 822.4 824.5 824.2 821.6 813.3 DAY 24 17 5 23 29 28 27 4 7 5 13 27 MEAN QNH PRESSURE IN HPA 1017.9 1017.5 1017.2 1017.8 1018.6 1018.2 1015.7 1015.1 1018.5 1022.7 1024.1 1021.6 1018.7 MAX. QNH PRESSURE IN HPA 1028.5 1025.5 1024.0 1024.8 1023.8 1023.9 1020.6 1018.7 1021.4 1029.7 1029.7 1028.7 1029.7 DAY 8 11 27 29 17 1 1 18 26 28 2 4 MIN. QNH PRESSURE IN HPA 1004.1 1006.5 1007.2 1012.3 1014.0 1013.2 1009.3 1010.5 1014.9 1017.4 1017.0 1013.9 1004.1 DAY 24 17 5 23 29 28 27 4 7 5 13 27 MEAN QFF PRESSURE IN HPA 1030.1 1027.3 1019.9 1014.6 1010.2 1006.0 1001.3 1000.7 1008.7 1018.8 1021.9 1025.2 1015.4 MAX. QFF PRESSURE IN HPA 1043.0 1041.7 1028.3 1022.0 1016.8 1013.7 1007.5 1007.6 1014.4 1026.7 1028.5 1034.6 1043.0 DAY 22 3 3 14 19 1 1 30 28 28 26 25 MIN. QFF PRESSURE IN HPA 1006.3 1009.6 1007.0 1006.5 1004.0 1000.6 994.8 993.8 1001.8 1008.2 1011.4 1015.6 993.8 DAY 24 18 5 23 29 29 27 4 11 5 13 12 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.0 825.5 825.1 825.6 826.0 825.5 823.4 823.0 826.0 829.9 831.0 829.0 826.3 MAX. QFE PRESSURE IN HPA 834.2 832.0 831.0 830.8 830.2 830.3 827.6 826.1 828.7 835.7 836.2 835.0 836.2 DAY 8 11 27 29 17 1 1 18 26 28 2 4 MIN. QFE PRESSURE IN HPA 814.5 815.6 815.6 819.6 821.2 821.3 817.5 819.4 822.8 825.0 825.1 821.7 814.5 DAY 24 17 5 23 29 28 27 4 7 4 12 27 MEAN QNH PRESSURE IN HPA 1019.2 1018.5 1018.1 1018.7 1019.2 1018.5 1016.0 1015.6 1019.2 1023.8 1025.1 1022.7 1019.5 MAX. QNH PRESSURE IN HPA 1028.9 1026.3 1025.1 1024.8 1024.1 1024.2 1021.0 1019.3 1022.3 1030.6 1031.2 1029.8 1031.2 DAY 8 11 27 29 17 1 1 18 26 28 2 4 MIN. QNH PRESSURE IN HPA 1005.5 1006.8 1006.8 1011.6 1013.5 1013.6 1009.1 1011.3 1015.3 1018.0 1018.1 1014.0 1005.5 DAY 24 17 5 23 29 28 27 4 7 4 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.6 825.3 824.6 825.4 825.5 824.8 822.6 822.2 825.3 828.9 830.2 828.3 825.7 MAX. QFE PRESSURE IN HPA 833.4 832.0 830.3 830.8 829.5 830.3 826.6 826.2 827.9 835.4 834.9 834.2 835.4 DAY 7 11 26 29 17 1 11 18 23 28 2 3 MIN. QFE PRESSURE IN HPA 814.2 815.6 814.3 820.6 820.2 820.6 817.0 818.8 821.9 824.2 824.6 822.2 814.2 DAY 24 17 5 23 29 28 27 4 10 4 12 27 MEAN QNH PRESSURE IN HPA 1018.7 1018.3 1017.5 1018.4 1018.6 1017.7 1015.1 1014.7 1018.3 1022.5 1024.1 1021.8 1018.8 MAX. QNH PRESSURE IN HPA 1027.9 1026.3 1024.2 1024.8 1023.3 1024.2 1019.9 1019.4 1021.4 1030.3 1029.7 1028.9 1030.3 DAY 7 11 26 29 17 1 11 18 23 28 2 3 MIN. QNH PRESSURE IN HPA 1005.1 1006.8 1005.3 1012.7 1012.3 1012.7 1008.5 1010.6 1014.3 1017.0 1017.5 1014.6 1005.1 DAY 24 17 5 23 29 28 27 4 10 4 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 824.5 824.3 823.5 824.2 824.9 823.7 821.5 820.8 823.7 827.4 828.8 827.2 824.5 MAX. QFE PRESSURE IN HPA 832.5 831.5 829.2 828.8 829.9 828.4 825.7 824.2 826.5 833.1 833.0 833.0 833.1 DAY 7 11 19 19 18 1 11 18 27 28 1 3 MIN. QFE PRESSURE IN HPA 813.7 814.3 812.4 819.6 819.5 819.0 816.4 816.7 820.5 823.0 822.4 821.2 812.4 DAY 24 17 5 23 29 28 26 4 10 4 12 27 MEAN QNH PRESSURE IN HPA 1017.4 1017.1 1016.1 1017.0 1017.8 1016.4 1013.8 1013.0 1016.4 1020.8 1022.4 1020.5 1017.4 MAX. QNH PRESSURE IN HPA 1026.8 1025.7 1022.9 1022.5 1023.8 1022.0 1018.8 1017.0 1019.7 1027.6 1027.4 1027.4 1027.6 DAY 7 11 19 19 18 1 11 18 27 28 1 3 MIN. QNH PRESSURE IN HPA 1004.6 1005.3 1003.0 1011.6 1011.4 1010.8 1007.8 1008.1 1012.6 1015.6 1014.9 1013.5 1003.0 DAY 24 17 5 23 29 28 26 4 10 4 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.9 824.4 823.4 824.1 824.6 823.3 821.1 820.5 823.4 827.3 828.9 827.3 824.4 MAX. QFE PRESSURE IN HPA 833.1 831.5 829.0 829.4 828.9 828.4 825.2 824.0 826.9 833.1 833.4 832.8 833.4 DAY 7 11 25 29 18 1 11 31 30 28 1 3 MIN. QFE PRESSURE IN HPA 813.7 812.6 813.9 819.6 819.5 818.7 816.2 816.5 820.0 823.2 822.0 821.2 812.6 DAY 24 17 5 23 29 28 26 4 10 4 12 11 MEAN QNH PRESSURE IN HPA 1017.9 1017.2 1016.0 1016.9 1017.5 1015.9 1013.3 1012.6 1016.1 1020.7 1022.6 1020.7 1017.3 MAX. QNH PRESSURE IN HPA 1027.6 1025.7 1022.7 1023.2 1022.6 1022.0 1018.2 1016.8 1020.2 1027.6 1027.9 1027.2 1027.9 DAY 7 11 25 29 18 1 11 31 30 28 1 3 MIN. QNH PRESSURE IN HPA 1004.6 1003.3 1004.8 1011.6 1011.4 1010.5 1007.5 1007.9 1012.0 1015.8 1014.4 1013.5 1003.3 DAY 24 17 5 23 29 28 26 4 10 4 12 11 MEAN QFF PRESSURE IN HPA 1030.0 1026.8 1018.5 1013.4 1008.9 1003.7 998.9 998.2 1006.3 1016.7 1020.5 1024.2 1013.8 MAX. QFF PRESSURE IN HPA 1044.1 1041.6 1027.9 1018.6 1015.1 1011.5 1004.0 1005.9 1013.7 1024.4 1027.6 1034.2 1044.1 DAY 11 2 2 13 18 1 1 30 30 28 26 24 MIN. QFF PRESSURE IN HPA 1008.0 1006.1 1005.5 1006.1 1000.6 998.3 992.2 991.7 1000.5 1008.4 1010.5 1012.1 991.7 DAY 24 17 5 23 29 28 26 4 6 5 12 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.1 -0.0 8.4 12.8 14.6 24.9 27.6 26.8 21.8 12.9 6.6 -4.0 12.7 MINIMUN AIR TEMPERATURE (C) -6.9 -7.0 0.4 3.4 5.2 10.5 13.2 11.9 5.8 1.1 0.9 -7.3 2.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 23 21 5 0 0 0 0 0 0 4 1 22 76 DAYS WITH FREEZING MIN.<= 0 29 26 17 7 1 0 0 0 0 10 16 31 137 TEMPERATURE RECORDS LOWEST(C) -23.2 -25.2 -7.2 -2.6 -1.6 5.8 9.0 7.0 1.0 -5.6 -4.6 -22.0 -25.2 DAY 31 1 16 4 2 1 10 27 28 23 22 30 MAXIMUM AIR TEMPERATURE (C) 5.8 5.4 13.7 18.7 20.0 32.4 34.7 34.9 29.9 20.1 11.2 -1.0 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 25 31 31 14 0 0 0 101 DAYS WITH MAXIMUM TEMP. <= 0 4 5 0 0 0 0 0 0 0 0 0 21 30 TEMPERATURE RECORDS HIGHEST(C) 11.6 16.0 23.0 23.4 26.0 36.4 37.0 38.6 36.0 26.4 16.0 5.4 38.6 DAY 8 12 10 9 26 15 1 18 3 4 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 12.7 12.4 13.3 15.3 14.8 21.9 21.5 23.0 24.1 19.0 10.3 6.3 16.2 MEAN DAILY TEMP. (MDT) (C) -0.5 -0.8 7.1 11.0 12.6 21.4 24.0 23.4 17.9 10.6 6.0 -4.2 10.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 40.6 91.6 78.8 4.7 0.0 0.0 0.0 215.7 HEATING DEG. DAYS(BASE 18 0C) 574.8 546.0 338.8 210.2 168.8 7.2 0.0 0.0 33.7 230.0 359.6 687.3 3156.4 DEWPOINT (MEAN C) -5.5 -5.6 -1.6 -0.7 3.5 7.8 8.6 8.9 5.7 -0.9 1.1 -5.9 1.3 MIXING RATIO (G/KG) 3.20 3.18 4.23 4.60 6.15 8.20 8.62 8.86 7.16 4.48 5.12 3.07 5.57 VAPOUR PRESSURE (HPA) 4.22 4.20 5.56 6.05 8.06 10.70 11.23 11.52 9.40 5.93 6.75 4.06 7.31 SATURATION DEF. (HPA) 2.32 2.47 6.11 9.58 9.46 23.43 28.15 26.73 19.61 10.50 3.35 0.66 11.86 RELATIVE HUMIDITY (MEAN %) 70 69 54 44 52 38 33 36 39 44 71 87 53 RELATIVE HUMIDITY (MAX. %) 87 85 81 73 81 71 58 63 72 76 89 92 77 RELATIVE HUMIDITY (MIN. %) 53 55 36 28 34 22 20 22 23 24 56 81 38 RELATIVE HUMIDITY (MEAN% 03UTC) 86 84 81 72 81 71 58 63 73 76 87 90 77 RELATIVE HUMIDITY (MEAN% 09UTC) 67 65 44 34 41 27 24 26 29 33 65 86 45 RELATIVE HUMIDITY (MEAN% 15UTC) 61 61 42 35 46 25 26 27 29 33 67 88 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 27.6 30.6 27.3 43.6 47.3 6.0 0.0 0.0 0.0 38.3 75.7 52.5 348.9 DAYS WITH PRECIPITATION >=10 1 1 0 2 1 0 0 0 0 1 2 1 9 DAYS WITH PRECIPITATION >= 5 1 3 2 2 2 1 0 0 0 1 4 5 21 DAYS WITH PRECIPITATION >= 1 4 4 7 5 9 2 0 0 0 2 10 10 53 DAYS WITH PRECIPITATION 7 9 11 11 15 2 0 0 0 2 17 12 86 GREATEST DAILY PRECIPITATION 16.0 15.0 8.0 16.0 20.0 5.0 0.0 0.0 0.0 37.0 32.0 12.0 37.0 DAY 29 23 15 22 10 2 ** ** ** 19 25 3 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 1 0 0 2 DAYS WITH SNOW OR SLEET 6 4 1 0 0 0 0 0 0 0 1 12 24 DAYS WITH DUST 0 0 2 6 8 6 3 5 1 5 0 1 37 WIND DIRECTION (PREVAILING) 180 180 225 225 225 315 90 90 225 225 225 45 225 PREVAILING WIND SPEED(KNOTS) 8.0 10.7 9.2 10.0 8.6 7.6 9.7 9.1 7.5 9.7 6.9 6.0 8.8 PREVAILING WIND PERCENT 2.6 4.8 16.1 19.3 12.9 6.7 12.3 7.1 2.7 7.7 4.7 3.2 6.8 CALMS PERCENT OF WIND 89.7 77.2 59.4 56.0 61.3 69.3 63.2 79.4 94.6 73.5 86.7 94.8 75.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 148 155 150 155 1828 VECTOR WIND DIRECTION (MEAN) 190 196 207 220 223 0 94 85 210 223 223 44 201 VECTOR WIND MAGNITUDE(KNOTS) 0.3 0.8 2.7 2.7 1.6 0.0 1.7 0.7 0.3 1.3 0.4 0.1 0.7 WIND STEADINESES (MEAN %) 37.5 40.0 67.5 65.9 48.5 0.0 53.1 38.9 75.0 54.2 44.4 25.0 33.3 WIND SPEED (MEAN KNOTS) 0.8 2.0 4.0 4.1 3.3 2.3 3.2 1.8 0.4 2.4 0.9 0.4 2.1 FASTEST WIND DIRECTION 240 180 200 230 240 330 150 90 210 200 240 270 240 FASTEST WIND SPEED (KNOTS) 14 19 23 19 29 16 16 16 12 16 10 12 29 DAY 8 13 8 19 1 13 17 5 9 6 1 14 DAYS WITH SKY CLEAR (0-2)/8 13 8 4 14 10 27 22 26 29 21 7 4 185 DAYS WITH P.CLOUDY (3-6)/8 14 14 18 11 10 3 9 4 1 9 8 5 106 DAYS WITH CLOUDY (7-8)/8 4 7 9 5 11 0 0 1 0 1 15 22 75 DAYS WITH VISIBILITY =< 2 KM 8 6 1 1 2 0 0 0 0 0 3 16 37 DURATION OF SUNSHINE HOURS 133.3 143.0 172.0 241.5 210.9 346.4 309.2 321.0 228.9 231.4 102.5 52.5 2492.6 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.4 826.5 823.4 823.8 823.5 822.3 821.9 820.8 826.3 829.4 828.0 828.1 824.9 MAX. QFE PRESSURE IN HPA 834.0 831.9 832.7 830.2 828.8 828.1 826.4 825.0 832.2 836.9 836.4 836.2 836.9 DAY-HOUR 4- 6 19- 6 28- 6 14- 6 13- 6 5- 6 22- 6 29- 6 22- 6 21- 6 27- 6 18- 9 MIN. QFE PRESSURE IN HPA 819.5 814.2 812.0 817.5 817.0 814.2 816.8 816.7 819.5 818.8 820.0 818.6 812.0 DAY-HOUR 29- 3 7-15 14-12 16-15 28-15 20-15 16-15 11-15 8-15 19- 3 11-15 3-12 MEAN QNH PRESSURE IN HPA 1018.4 1019.7 1016.0 1016.6 1016.2 1014.7 1014.3 1012.9 1019.5 1023.2 1021.5 1021.6 1017.9 MAX. QNH PRESSURE IN HPA 1028.6 1026.1 1027.1 1024.1 1022.5 1021.6 1019.6 1018.0 1026.5 1032.1 1031.5 1031.2 1032.1 DAY-HOUR 4- 6 19- 6 28- 6 14- 6 13- 6 5- 6 22- 6 29- 6 22- 6 21- 6 27- 6 18- 9 MIN. QNH PRESSURE IN HPA 1011.4 1005.1 1002.5 1009.1 1008.5 1005.1 1008.2 1008.1 1011.4 1010.6 1012.0 1010.4 1002.5 DAY-HOUR 29- 3 7-15 14-12 16-15 28-15 20-15 16-15 11-15 8-15 19- 3 11-15 3-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.6 826.6 823.7 824.3 823.9 822.9 822.7 821.8 826.9 829.6 828.0 828.1 825.3 MAX. QFE PRESSURE IN HPA 832.6 831.4 831.1 829.7 828.4 827.5 825.7 824.0 830.4 835.8 835.0 835.1 835.8 DAY 5 19 28 14 18 5 23 29 27 21 27 19 MIN. QFE PRESSURE IN HPA 819.5 816.5 814.3 818.8 818.2 816.9 819.0 819.6 822.0 818.8 821.3 821.0 814.3 DAY 29 8 15 17 5 20 16 6 8 19 12 3 MEAN QNH PRESSURE IN HPA 1018.6 1019.9 1016.5 1017.1 1016.6 1015.5 1015.2 1014.2 1020.2 1023.4 1021.5 1021.7 1018.4 MAX. QNH PRESSURE IN HPA 1027.0 1025.5 1025.2 1023.5 1022.0 1020.9 1018.8 1016.8 1024.4 1030.8 1029.8 1029.9 1030.8 DAY 5 19 28 14 18 5 23 29 27 21 27 19 MIN. QNH PRESSURE IN HPA 1011.4 1007.9 1005.3 1010.6 1009.9 1008.4 1010.8 1011.6 1014.4 1010.6 1013.6 1013.2 1005.3 DAY 29 8 15 17 5 20 16 6 8 19 12 3 MEAN QFF PRESSURE IN HPA 1023.1 1024.4 1014.6 1012.4 1010.3 1002.6 1000.8 1000.4 1010.7 1019.6 1020.5 1028.5 1014.0 MAX. QFF PRESSURE IN HPA 1036.0 1035.2 1025.2 1020.1 1017.2 1010.8 1005.5 1005.2 1018.2 1034.5 1029.7 1039.1 1039.1 DAY 31 25 28 13 2 1 23 29 29 21 27 19 MIN. QFF PRESSURE IN HPA 1015.1 1006.8 1002.4 1004.2 1001.0 994.5 997.1 994.1 1002.5 1006.2 1011.9 1014.6 994.1 DAY 17 8 26 17 28 20 16 6 1 19 12 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.4 827.5 824.3 824.9 824.4 823.6 823.3 822.3 827.7 830.6 828.9 828.9 826.1 MAX. QFE PRESSURE IN HPA 834.0 831.9 832.7 830.2 828.8 828.1 826.4 825.0 832.2 836.9 836.4 835.9 836.9 DAY 4 19 28 14 13 5 22 29 22 21 27 19 MIN. QFE PRESSURE IN HPA 820.7 817.4 815.0 820.1 818.5 816.7 819.3 819.9 822.3 820.0 821.8 820.7 815.0 DAY 29 8 14 17 5 20 16 6 9 19 13 14 MEAN QNH PRESSURE IN HPA 1019.6 1020.9 1017.1 1017.9 1017.2 1016.4 1015.9 1014.8 1021.1 1024.7 1022.5 1022.6 1019.2 MAX. QNH PRESSURE IN HPA 1028.6 1026.1 1027.1 1024.1 1022.5 1021.6 1019.6 1018.0 1026.5 1032.1 1031.5 1030.9 1032.1 DAY 4 19 28 14 13 5 22 29 22 21 27 19 MIN. QNH PRESSURE IN HPA 1012.9 1008.9 1006.1 1012.1 1010.3 1008.1 1011.2 1011.9 1014.8 1012.0 1014.2 1012.9 1006.1 DAY 29 8 14 17 5 20 16 6 9 19 13 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.9 827.2 823.7 824.4 823.8 822.7 822.4 821.1 826.7 830.0 828.3 828.5 825.4 MAX. QFE PRESSURE IN HPA 833.0 831.8 831.1 829.7 828.1 826.7 825.5 823.2 832.0 836.5 836.0 836.2 836.5 DAY 4 18 28 14 12 4 22 29 22 21 27 18 MIN. QFE PRESSURE IN HPA 821.6 817.0 814.0 819.4 817.0 815.4 819.0 818.8 821.0 820.3 822.0 820.0 814.0 DAY 29 8 14 9 29 20 16 11 9 19 13 3 MEAN QNH PRESSURE IN HPA 1019.0 1020.5 1016.5 1017.2 1016.5 1015.3 1014.8 1013.3 1020.0 1023.8 1021.9 1022.1 1018.4 MAX. QNH PRESSURE IN HPA 1027.4 1026.0 1025.2 1023.5 1021.6 1020.0 1018.6 1015.8 1026.3 1031.6 1031.0 1031.2 1031.6 DAY 4 18 28 14 12 4 22 29 22 21 27 18 MIN. QNH PRESSURE IN HPA 1013.9 1008.5 1004.9 1011.3 1008.5 1006.6 1010.8 1010.6 1013.2 1012.4 1014.4 1012.0 1004.9 DAY 29 8 14 9 29 20 16 11 9 19 13 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 824.6 825.6 822.5 823.0 823.0 821.3 821.0 819.4 825.3 828.5 827.3 827.3 824.1 MAX. QFE PRESSURE IN HPA 833.0 830.4 829.4 827.8 827.3 826.0 824.0 822.0 829.6 835.0 833.0 835.0 835.0 DAY 4 18 4 14 12 4 22 29 22 21 27 18 MIN. QFE PRESSURE IN HPA 820.6 816.0 812.0 818.2 818.1 814.4 817.0 817.0 820.0 819.3 821.0 818.6 812.0 DAY 29 8 14 9 29 20 16 7 1 19 11 3 MEAN QNH PRESSURE IN HPA 1017.5 1018.7 1015.0 1015.6 1015.5 1013.6 1013.2 1011.3 1018.3 1022.1 1020.7 1020.7 1016.9 MAX. QNH PRESSURE IN HPA 1027.4 1024.4 1023.2 1021.3 1020.7 1019.1 1016.8 1014.4 1023.4 1029.8 1027.4 1029.8 1029.8 DAY 4 18 4 14 12 4 22 29 22 21 27 18 MIN. QNH PRESSURE IN HPA 1012.7 1007.3 1002.5 1009.9 1009.8 1005.4 1008.5 1008.5 1012.0 1011.2 1013.2 1010.4 1002.5 DAY 29 8 14 9 29 20 16 7 1 19 11 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.6 825.4 822.5 822.7 822.7 820.8 820.5 819.3 825.0 828.5 827.6 827.7 823.9 MAX. QFE PRESSURE IN HPA 832.8 830.4 829.6 827.0 827.7 825.3 823.8 822.0 829.2 835.0 833.3 835.1 835.1 DAY 4 18 3 14 12 4 22 28 26 21 26 18 MIN. QFE PRESSURE IN HPA 819.8 814.2 812.4 817.5 817.0 814.2 816.8 816.7 819.5 820.4 820.0 820.0 812.4 DAY 16 7 14 16 28 20 16 11 8 19 11 6 MEAN QNH PRESSURE IN HPA 1017.5 1018.4 1015.0 1015.3 1015.2 1013.0 1012.6 1011.1 1017.9 1022.1 1021.0 1021.1 1016.7 MAX. QNH PRESSURE IN HPA 1027.2 1024.4 1023.4 1020.3 1021.2 1018.3 1016.5 1014.4 1022.9 1029.8 1027.8 1029.9 1029.9 DAY 4 18 3 14 12 4 22 28 26 21 26 18 MIN. QNH PRESSURE IN HPA 1011.8 1005.1 1003.0 1009.1 1008.5 1005.1 1008.2 1008.1 1011.4 1012.5 1012.0 1012.0 1003.0 DAY 16 7 14 16 28 20 16 11 8 19 11 6 MEAN QFF PRESSURE IN HPA 1022.0 1022.6 1013.0 1010.4 1008.9 999.9 998.0 997.1 1008.1 1018.1 1020.2 1028.1 1012.2 MAX. QFF PRESSURE IN HPA 1033.5 1034.8 1021.1 1016.7 1015.5 1007.0 1003.3 1003.1 1017.1 1031.2 1027.4 1039.0 1039.0 DAY 31 1 4 13 12 1 22 28 30 21 27 18 MIN. QFF PRESSURE IN HPA 1014.0 1007.4 1003.7 999.8 996.7 991.5 993.9 992.5 999.6 1004.2 1012.0 1015.2 991.5 DAY 16 7 26 9 28 20 16 6 1 17 11 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.1 0.2 1.5 10.9 16.4 21.6 25.1 22.4 18.8 11.8 6.5 1.0 11.4 MINIMUN AIR TEMPERATURE (C) -6.1 -4.7 -4.3 3.4 5.9 9.1 14.2 10.9 6.1 1.7 0.3 -3.1 2.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 17 15 12 0 0 0 0 0 0 2 1 13 60 DAYS WITH FREEZING MIN.<= 0 26 26 19 2 1 0 0 0 0 13 15 24 126 TEMPERATURE RECORDS LOWEST(C) -17.4 -13.6 -16.6 -1.2 -1.0 5.4 8.0 6.6 3.0 -5.0 -7.4 -11.0 -17.4 DAY 7 24 11 5 5 2 28 13 25 24 1 31 MAXIMUM AIR TEMPERATURE (C) 5.5 6.5 7.4 18.2 25.2 31.4 34.5 32.1 30.1 21.5 13.6 6.2 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 25 31 27 15 0 0 0 100 DAYS WITH MAXIMUM TEMP. <= 0 7 3 9 0 0 0 0 0 0 0 0 0 19 TEMPERATURE RECORDS HIGHEST(C) 12.0 14.8 17.0 24.0 31.6 36.8 36.8 36.2 34.6 28.4 20.0 11.8 36.8 DAY 15 15 21 19 30 27 5 3 4 2 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 11.2 11.7 14.8 19.3 22.3 20.3 21.2 24.0 19.8 13.3 9.3 16.5 MEAN DAILY TEMP. (MDT) (C) -0.3 0.9 1.6 10.8 15.5 20.2 24.3 21.5 18.1 11.6 7.0 1.6 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 16.3 105.5 31.7 1.1 0.0 0.0 0.0 154.6 HEATING DEG. DAYS(BASE 18 0C) 567.5 478.7 509.6 216.8 81.6 4.0 0.0 0.0 25.8 197.4 331.3 508.8 2921.6 DEWPOINT (MEAN C) -3.5 -6.5 -3.4 1.3 3.7 5.3 5.8 4.6 0.3 -4.1 -0.2 -3.6 -0.0 MIXING RATIO (G/KG) 3.76 3.03 3.98 5.20 6.22 7.03 7.23 6.65 4.85 3.65 4.69 3.63 4.99 VAPOUR PRESSURE (HPA) 4.96 3.98 5.24 6.83 8.17 9.19 9.44 8.72 6.39 4.83 6.20 4.79 6.56 SATURATION DEF. (HPA) 1.67 2.61 2.56 6.95 11.96 18.82 24.91 20.50 17.85 10.41 3.93 2.00 10.35 RELATIVE HUMIDITY (MEAN %) 79 64 72 56 48 40 32 35 33 37 67 74 53 RELATIVE HUMIDITY (MAX. %) 92 85 89 79 77 68 52 61 59 62 83 89 75 RELATIVE HUMIDITY (MIN. %) 61 42 53 34 24 18 18 18 15 19 45 55 34 RELATIVE HUMIDITY (MEAN% 03UTC) 88 77 84 78 74 65 51 59 58 59 81 84 72 RELATIVE HUMIDITY (MEAN% 09UTC) 73 54 64 40 30 24 22 22 20 26 56 66 41 RELATIVE HUMIDITY (MEAN% 15UTC) 74 55 63 45 30 23 21 22 19 22 56 66 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.5 54.9 39.4 34.4 4.3 1.5 0.0 0.2 0.0 0.0 39.4 42.0 227.6 DAYS WITH PRECIPITATION >=10 0 2 1 1 0 0 0 0 0 0 2 2 8 DAYS WITH PRECIPITATION >= 5 0 3 3 3 0 0 0 0 0 0 4 3 16 DAYS WITH PRECIPITATION >= 1 5 4 9 7 1 1 0 0 0 0 5 7 39 DAYS WITH PRECIPITATION 7 5 10 11 4 2 0 1 0 0 7 10 57 GREATEST DAILY PRECIPITATION 3.0 35.0 11.0 10.0 2.3 1.0 0.0 0.2 0.0 0.0 14.0 12.0 35.0 DAY 2 1 24 7 20 16 ** 26 ** ** 26 18 DAY WITH THUNDER STORM 0 0 0 1 4 0 0 1 1 0 0 0 7 DAYS WITH SNOW OR SLEET 1 6 6 0 0 0 0 0 0 0 0 5 18 DAYS WITH DUST 0 1 0 0 6 1 5 5 0 4 1 0 23 WIND DIRECTION (PREVAILING) 180 225 225 180 225 270 90 90 225 270 270 225 225 PREVAILING WIND SPEED(KNOTS) 12.0 10.6 8.8 10.6 9.4 5.9 8.2 8.1 8.4 8.4 6.8 14.7 9.8 PREVAILING WIND PERCENT 2.0 21.0 4.8 11.7 8.6 8.4 8.2 15.1 3.8 10.9 2.1 5.2 6.0 CALMS PERCENT OF WIND 90.7 54.9 85.1 68.2 72.0 77.1 67.4 73.5 83.3 69.0 95.0 83.5 76.6 NO. OF WIND OBSERVATION 205 224 248 239 243 227 233 245 240 248 240 248 2840 VECTOR WIND DIRECTION (MEAN) 231 218 220 204 233 253 150 94 211 250 277 212 215 VECTOR WIND MAGNITUDE(KNOTS) 0.3 3.9 1.0 2.0 1.5 0.7 0.6 1.5 0.4 1.4 0.2 0.8 0.9 WIND STEADINESES (MEAN %) 33.3 78.0 71.4 64.5 62.5 46.7 26.1 68.2 28.6 56.0 66.7 57.1 45.0 WIND SPEED (MEAN KNOTS) 0.9 5.0 1.4 3.1 2.4 1.5 2.3 2.2 1.4 2.5 0.3 1.4 2.0 FASTEST WIND DIRECTION 270 180 180 210 240 360 90 150 120 230 330 210 210 FASTEST WIND SPEED (KNOTS) 19 29 23 19 29 16 16 19 19 29 12 33 33 DAY 16 5 23 15 2 16 6 8 22 20 2 3 DAYS WITH SKY CLEAR (0-2)/8 12 16 6 9 18 29 25 27 30 27 10 9 218 DAYS WITH P.CLOUDY (3-6)/8 13 7 16 15 13 1 6 4 0 4 12 14 105 DAYS WITH CLOUDY (7-8)/8 6 5 9 6 0 0 0 0 0 0 8 8 42 DAYS WITH VISIBILITY =< 2 KM 8 3 2 0 0 0 0 0 0 0 4 6 23 DURATION OF SUNSHINE HOURS 139.5 198.5 185.6 226.1 318.5 381.6 355.6 337.4 321.0 280.8 147.4 134.3 3026.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.8 821.1 826.0 824.7 825.7 823.2 822.0 825.0 826.8 828.1 829.5 825.9 825.3 MAX. QFE PRESSURE IN HPA 832.4 829.9 834.7 831.4 832.4 828.3 826.1 831.2 833.7 833.8 834.8 835.6 835.6 DAY-HOUR 14- 6 12- 6 5- 9 17- 6 12- 6 5- 6 16- 6 14- 6 22- 6 31-21 1- 6 9- 6 MIN. QFE PRESSURE IN HPA 813.2 810.0 812.5 819.4 820.0 818.3 816.8 818.6 821.0 820.2 824.5 808.0 808.0 DAY-HOUR 2-12 26- 9 24- 0 24- 0 3- 3 30-15 19-15 7-15 6-15 10-12 7-12 18-21 MEAN QNH PRESSURE IN HPA 1018.9 1013.3 1019.2 1017.6 1018.8 1015.8 1014.3 1018.0 1020.1 1021.6 1023.3 1019.0 1018.3 MAX. QNH PRESSURE IN HPA 1026.7 1023.8 1029.5 1025.5 1026.7 1021.9 1019.3 1025.3 1028.3 1028.4 1029.6 1030.5 1030.5 DAY-HOUR 14- 6 12- 6 5- 9 17- 6 12- 6 5- 6 16- 6 14- 6 22- 6 31-21 1- 6 9- 6 MIN. QNH PRESSURE IN HPA 1004.0 1000.2 1003.1 1011.3 1012.0 1010.0 1008.2 1010.4 1013.2 1012.3 1017.4 997.8 997.8 DAY-HOUR 2-12 26- 9 24- 0 24- 0 3- 3 30-15 19-15 7-15 6-15 10-12 7-12 18-21 MEAN QFF PRESSURE IN HPA 1021.1 1015.5 1020.9 1011.8 1009.3 1002.7 999.0 1004.3 1008.9 1015.6 1021.0 1021.0 1012.6 MAX. QFF PRESSURE IN HPA 1035.1 1030.7 1040.5 1020.9 1019.4 1010.0 1006.5 1014.4 1020.2 1028.2 1031.9 1034.2 1040.5 DAY-HOUR 6-15 24- 6 11- 6 17- 3 13- 3 10- 3 29- 3 14- 3 22- 6 31-18 1- 6 9- 6 MIN. QFF PRESSURE IN HPA 1009.5 1000.6 995.7 1003.1 1000.9 995.3 989.8 994.4 1000.3 1001.5 1012.9 996.9 989.8 DAY-HOUR 16-12 26- 9 24- 0 15-12 26-12 30-15 19-15 8- 9 6-12 10-12 7-12 18-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.9 821.0 825.8 824.6 826.0 823.5 822.3 825.2 826.9 828.2 829.5 825.9 825.4 MAX. QFE PRESSURE IN HPA 831.7 828.4 833.0 830.8 831.0 826.7 825.0 830.0 832.2 832.6 833.0 834.2 834.2 DAY 25 12 6 17 13 10 3 14 23 7 1 9 MIN. QFE PRESSURE IN HPA 821.6 812.6 812.5 819.4 820.5 821.0 819.8 820.0 823.0 823.8 825.8 810.0 810.0 DAY 19 6 24 24 3 30 27 8 6 11 27 19 MEAN QNH PRESSURE IN HPA 1019.0 1013.2 1019.0 1017.5 1019.1 1016.2 1014.8 1018.2 1020.3 1021.8 1023.2 1019.0 1018.4 MAX. QNH PRESSURE IN HPA 1025.9 1022.0 1027.4 1024.8 1025.1 1020.0 1018.0 1023.9 1026.5 1027.0 1027.4 1028.9 1028.9 DAY 25 12 6 17 13 10 3 14 23 7 1 9 MIN. QNH PRESSURE IN HPA 1013.9 1003.3 1003.1 1011.3 1012.6 1013.2 1011.8 1012.0 1015.6 1016.5 1018.9 1000.2 1000.2 DAY 19 6 24 24 3 30 27 8 6 11 27 19 MEAN QFF PRESSURE IN HPA 1019.2 1014.5 1020.3 1011.3 1009.6 1002.7 999.0 1004.0 1008.4 1014.8 1020.2 1020.0 1012.0 MAX. QFF PRESSURE IN HPA 1027.0 1025.8 1037.0 1019.0 1016.0 1008.4 1005.6 1011.4 1015.9 1021.7 1026.4 1030.3 1037.0 DAY 25 24 11 17 21 10 29 14 23 31 1 10 MIN. QFF PRESSURE IN HPA 1010.4 1003.2 995.7 1004.0 1001.9 997.7 995.8 996.6 1001.9 1006.3 1014.0 999.4 995.7 DAY 16 6 24 24 3 28 8 8 6 10 27 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.9 820.9 825.9 824.8 826.2 824.0 822.7 825.8 827.3 828.6 829.6 825.9 825.6 MAX. QFE PRESSURE IN HPA 831.7 828.4 832.8 831.1 831.6 827.4 825.5 830.5 832.2 832.6 833.8 834.2 834.2 DAY 14 12 5 17 12 10 16 14 23 7 1 9 MIN. QFE PRESSURE IN HPA 817.2 812.6 813.9 821.0 820.0 821.0 819.0 820.0 823.1 823.8 825.7 810.8 810.8 DAY 2 6 24 3 3 30 19 8 6 10 11 19 MEAN QNH PRESSURE IN HPA 1019.1 1013.1 1019.1 1017.7 1019.3 1016.7 1015.2 1018.9 1020.7 1022.2 1023.4 1019.0 1018.7 MAX. QNH PRESSURE IN HPA 1025.9 1022.0 1027.2 1025.2 1025.8 1020.8 1018.6 1024.5 1026.5 1027.0 1028.4 1028.9 1028.9 DAY 14 12 5 17 12 10 16 14 23 7 1 9 MIN. QNH PRESSURE IN HPA 1008.7 1003.3 1004.8 1013.2 1012.0 1013.2 1010.8 1012.0 1015.7 1016.5 1018.8 1001.1 1001.1 DAY 2 6 24 3 3 30 19 8 6 10 11 19 MEAN QFF PRESSURE IN HPA 1023.5 1015.9 1021.5 1012.9 1011.3 1005.0 1000.6 1006.7 1011.2 1017.4 1021.8 1021.3 1014.1 MAX. QFF PRESSURE IN HPA 1034.1 1027.5 1037.2 1020.9 1019.4 1010.0 1006.5 1014.4 1019.5 1025.8 1029.7 1032.4 1037.2 DAY 7 24 11 17 13 10 29 14 23 31 1 10 MIN. QFF PRESSURE IN HPA 1012.5 1005.3 999.6 1006.3 1002.3 999.5 993.0 996.5 1003.9 1007.2 1016.1 1000.2 993.0 DAY 16 21 24 15 3 30 19 8 6 20 10 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.7 821.7 826.9 825.4 826.5 824.4 823.1 826.4 828.0 829.4 830.6 826.9 826.3 MAX. QFE PRESSURE IN HPA 832.4 829.9 834.3 831.4 832.4 828.3 826.1 831.2 833.7 833.4 834.8 835.6 835.6 DAY 14 12 5 17 12 5 16 14 22 14 1 9 MIN. QFE PRESSURE IN HPA 817.5 812.2 816.4 822.4 820.6 821.4 820.0 820.1 823.7 823.8 825.9 813.6 812.2 DAY 2 26 24 3 3 30 19 8 6 10 11 19 MEAN QNH PRESSURE IN HPA 1020.0 1014.0 1020.2 1018.4 1019.8 1017.2 1015.8 1019.6 1021.6 1023.1 1024.6 1020.2 1019.5 MAX. QNH PRESSURE IN HPA 1026.7 1023.8 1029.0 1025.5 1026.7 1021.9 1019.3 1025.3 1028.3 1027.9 1029.6 1030.5 1030.5 DAY 14 12 5 17 12 5 16 14 22 14 1 9 MIN. QNH PRESSURE IN HPA 1009.1 1002.8 1007.8 1014.9 1012.7 1013.7 1012.0 1012.1 1016.4 1016.5 1019.0 1004.4 1002.8 DAY 2 26 24 3 3 30 19 8 6 10 11 19 MEAN QFF PRESSURE IN HPA 1022.0 1016.8 1022.6 1012.7 1009.7 1003.9 1000.6 1006.0 1010.7 1017.7 1023.2 1023.4 1014.1 MAX. QFF PRESSURE IN HPA 1029.5 1030.7 1040.5 1020.6 1017.6 1009.4 1006.4 1012.9 1020.2 1027.4 1031.9 1034.2 1040.5 DAY 25 24 11 17 12 10 29 13 22 31 1 9 MIN. QFF PRESSURE IN HPA 1011.1 1003.6 1002.1 1005.7 1002.9 999.0 996.6 995.1 1004.4 1007.7 1016.5 1010.6 995.1 DAY 16 26 24 15 3 30 14 8 6 10 11 3 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.1 821.2 826.7 825.0 825.8 823.4 822.2 825.4 827.2 828.2 829.9 826.1 825.6 MAX. QFE PRESSURE IN HPA 831.9 829.2 834.7 830.2 831.6 828.0 825.2 830.0 832.6 833.0 833.1 834.9 834.9 DAY 14 12 5 17 12 5 16 13 22 14 18 9 MIN. QFE PRESSURE IN HPA 814.5 810.0 816.9 822.0 820.2 820.3 819.0 819.5 822.5 821.2 826.0 812.9 810.0 DAY 2 26 24 24 3 30 19 8 6 10 7 19 MEAN QNH PRESSURE IN HPA 1019.2 1013.5 1019.9 1018.0 1018.9 1016.1 1014.7 1018.5 1020.6 1021.8 1023.8 1019.2 1018.7 MAX. QNH PRESSURE IN HPA 1026.1 1022.9 1029.5 1024.1 1025.8 1021.5 1018.2 1023.9 1027.0 1027.4 1027.6 1029.7 1029.7 DAY 14 12 5 17 12 5 16 13 22 14 18 9 MIN. QNH PRESSURE IN HPA 1005.5 1000.2 1008.4 1014.4 1012.3 1012.4 1010.8 1011.4 1015.0 1013.5 1019.1 1003.6 1000.2 DAY 2 26 24 24 3 30 19 8 6 10 7 19 MEAN QFF PRESSURE IN HPA 1020.0 1015.2 1021.3 1011.6 1008.5 1002.3 998.7 1003.7 1008.2 1014.7 1021.0 1020.9 1012.2 MAX. QFF PRESSURE IN HPA 1027.4 1027.2 1038.8 1017.7 1016.5 1007.3 1004.8 1011.5 1016.7 1025.0 1026.8 1031.2 1038.8 DAY 24 24 11 17 12 5 29 13 22 31 1 9 MIN. QFF PRESSURE IN HPA 1010.0 1000.6 1003.0 1005.8 1001.6 996.7 995.0 994.4 1001.0 1001.9 1014.2 1001.9 994.4 DAY 16 26 24 15 3 30 14 8 6 10 7 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.1 820.3 825.6 823.9 824.8 822.1 820.9 823.8 825.7 826.8 828.6 825.0 824.4 MAX. QFE PRESSURE IN HPA 830.6 828.0 833.7 828.8 830.0 826.0 823.7 829.0 830.9 831.8 832.0 833.7 833.7 DAY 24 12 5 17 12 5 16 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 813.2 812.0 817.2 820.9 820.2 819.0 817.2 818.7 821.2 820.2 824.5 813.4 812.0 DAY 2 26 24 3 3 30 19 8 6 10 7 19 MEAN QNH PRESSURE IN HPA 1018.0 1012.3 1018.7 1016.7 1017.7 1014.5 1013.0 1016.6 1018.8 1020.1 1022.2 1017.9 1017.2 MAX. QNH PRESSURE IN HPA 1024.6 1021.5 1028.3 1022.5 1023.9 1019.1 1016.4 1022.7 1025.0 1026.0 1026.3 1028.3 1028.3 DAY 24 12 5 17 12 5 16 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1004.0 1002.5 1008.7 1013.1 1012.3 1010.8 1008.7 1010.5 1013.5 1012.3 1017.4 1004.2 1002.5 DAY 2 26 24 3 3 30 19 8 6 10 7 19 MEAN QFF PRESSURE IN HPA 1018.1 1013.7 1019.7 1010.5 1008.1 1001.0 997.5 1002.3 1006.9 1013.1 1019.1 1018.9 1010.7 MAX. QFF PRESSURE IN HPA 1025.2 1024.8 1036.2 1016.5 1015.1 1006.0 1002.9 1010.3 1014.9 1024.3 1024.5 1029.3 1036.2 DAY 24 28 10 17 20 5 29 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1009.5 1002.4 1002.8 1003.1 1000.9 995.5 993.5 994.5 1000.3 1001.5 1012.9 1002.5 993.5 DAY 16 21 24 15 26 30 14 8 6 10 7 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.5 820.7 825.4 823.7 824.7 821.7 820.4 823.4 825.5 827.0 828.7 825.5 824.4 MAX. QFE PRESSURE IN HPA 830.9 828.0 833.7 828.6 830.0 825.1 823.0 828.0 831.5 832.1 832.0 833.8 833.8 DAY 24 12 5 17 12 5 3 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 816.2 814.0 817.7 821.0 820.7 818.3 816.8 818.6 821.0 821.3 824.9 812.5 812.5 DAY 2 21 24 9 2 30 19 7 6 10 26 18 MEAN QNH PRESSURE IN HPA 1018.6 1012.9 1018.4 1016.5 1017.6 1014.0 1012.5 1016.1 1018.6 1020.3 1022.4 1018.5 1017.2 MAX. QNH PRESSURE IN HPA 1025.0 1021.5 1028.3 1022.2 1023.9 1018.1 1015.6 1021.5 1025.7 1026.4 1026.3 1028.4 1028.4 DAY 24 12 5 17 12 5 3 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1007.5 1004.9 1009.3 1013.2 1012.9 1010.0 1008.2 1010.4 1013.2 1013.6 1017.8 1003.1 1003.1 DAY 2 21 24 9 2 30 19 7 6 10 26 18 MEAN QFF PRESSURE IN HPA 1022.6 1015.8 1020.5 1011.6 1009.3 1002.1 997.8 1003.7 1008.9 1015.6 1020.8 1020.8 1012.5 MAX. QFF PRESSURE IN HPA 1035.1 1026.1 1037.2 1018.1 1015.7 1008.0 1002.7 1011.7 1018.5 1027.4 1026.7 1031.2 1037.2 DAY 6 7 11 17 12 11 2 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1011.5 1003.6 1004.4 1005.2 1002.2 995.3 989.8 994.6 1001.6 1005.5 1014.7 1003.2 989.8 DAY 2 21 24 15 26 30 19 8 6 10 6 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 825.7 821.3 826.0 825.0 825.8 822.9 821.8 824.8 826.6 828.3 829.5 826.2 825.3 MAX. QFE PRESSURE IN HPA 831.7 828.8 833.7 829.8 830.4 825.8 824.0 829.5 832.2 833.0 833.0 834.2 834.2 DAY 24 12 5 17 11 9 2 13 22 31 17 9 MIN. QFE PRESSURE IN HPA 821.8 812.0 816.1 821.2 821.3 819.2 818.5 820.0 822.0 823.2 825.6 810.0 810.0 DAY 21 5 23 3 2 30 26 7 6 10 26 18 MEAN QNH PRESSURE IN HPA 1018.8 1013.6 1019.2 1018.0 1018.9 1015.5 1014.1 1017.8 1019.9 1021.9 1023.2 1019.3 1018.3 MAX. QNH PRESSURE IN HPA 1025.9 1022.5 1028.3 1023.7 1024.4 1018.9 1016.8 1023.3 1026.5 1027.4 1027.4 1028.9 1028.9 DAY 24 12 5 17 11 9 2 13 22 31 17 9 MIN. QNH PRESSURE IN HPA 1014.2 1002.5 1007.4 1013.5 1013.6 1011.1 1010.3 1012.0 1014.4 1015.8 1018.7 1000.2 1000.2 DAY 21 5 23 3 2 30 26 7 6 10 26 18 MEAN QFF PRESSURE IN HPA 1020.5 1016.6 1021.2 1012.3 1008.8 1002.1 998.8 1004.2 1009.1 1016.5 1021.7 1022.4 1012.8 MAX. QFF PRESSURE IN HPA 1029.8 1028.3 1038.9 1019.3 1014.9 1007.6 1004.0 1010.7 1017.4 1028.2 1026.9 1033.1 1038.9 DAY 24 28 11 17 11 9 28 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1011.9 1002.3 1002.4 1005.2 1001.9 996.3 994.5 995.7 1002.4 1008.2 1016.7 1000.2 994.5 DAY 15 5 23 23 26 30 26 7 6 10 26 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 825.7 821.4 826.0 825.2 826.1 823.6 822.5 825.3 827.0 828.5 829.5 826.1 825.6 MAX. QFE PRESSURE IN HPA 832.0 828.7 833.5 830.0 831.0 826.7 825.1 830.1 832.9 833.8 833.0 834.5 834.5 DAY 24 10 5 16 12 9 2 13 22 31 17 8 MIN. QFE PRESSURE IN HPA 820.0 811.0 814.7 821.2 821.0 820.8 819.6 820.0 822.4 823.8 825.5 808.0 808.0 DAY 18 5 23 3 2 30 26 7 6 10 26 18 MEAN QNH PRESSURE IN HPA 1018.8 1013.6 1019.1 1018.1 1019.2 1016.4 1015.0 1018.3 1020.4 1022.1 1023.3 1019.2 1018.6 MAX. QNH PRESSURE IN HPA 1026.3 1022.3 1028.0 1023.9 1025.1 1020.0 1018.1 1024.0 1027.3 1028.4 1027.4 1029.2 1029.2 DAY 24 10 5 16 12 9 2 13 22 31 17 8 MIN. QNH PRESSURE IN HPA 1012.0 1001.4 1005.7 1013.5 1013.2 1013.0 1011.6 1012.0 1014.9 1016.5 1018.6 997.8 997.8 DAY 18 5 23 3 2 30 26 7 6 10 26 18 MEAN QFF PRESSURE IN HPA 1019.3 1015.6 1020.3 1011.7 1008.9 1002.4 998.9 1003.5 1008.1 1015.2 1020.5 1020.8 1012.1 MAX. QFF PRESSURE IN HPA 1028.9 1027.5 1038.7 1018.5 1015.6 1008.0 1004.6 1010.4 1016.3 1027.7 1026.0 1030.9 1038.7 DAY 24 28 10 17 12 9 28 13 22 31 17 9 MIN. QFF PRESSURE IN HPA 1012.0 1000.9 998.5 1004.8 1002.0 996.8 996.1 994.8 1000.6 1006.1 1015.1 996.9 994.8 DAY 15 5 23 23 2 30 14 7 6 10 6 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.5 1.3 2.6 10.3 13.9 19.8 24.9 22.7 18.7 13.7 3.9 -1.3 10.8 MINIMUN AIR TEMPERATURE (C) -6.2 -4.1 -3.2 4.5 6.0 9.4 13.5 11.6 6.8 5.0 -0.6 -5.8 3.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 22 16 14 0 0 0 0 0 0 0 9 23 84 DAYS WITH FREEZING MIN.<= 0 29 26 25 1 0 0 0 0 0 1 20 26 128 TEMPERATURE RECORDS LOWEST(C) -16.0 -8.4 -16.4 -1.0 2.0 5.0 10.4 7.0 4.6 0.0 -6.2 -12.2 -16.4 DAY 24 8 17 4 18 22 16 31 6 30 28 13 MAXIMUM AIR TEMPERATURE (C) 6.8 7.7 9.1 16.6 21.3 28.6 34.1 32.2 29.1 22.8 9.8 4.5 18.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 7 31 29 7 0 0 0 74 DAYS WITH MAXIMUM TEMP. <= 0 3 0 1 0 0 0 0 0 0 0 0 4 8 TEMPERATURE RECORDS HIGHEST(C) 12.6 15.4 19.0 21.0 27.6 35.4 37.4 35.0 31.0 28.4 21.0 10.0 37.4 DAY 2 28 30 16 30 30 1 1 6 3 1 26 DIF. BETWEEN (MAX.-MIN.) (C) 13.0 11.8 12.3 12.1 15.3 19.2 20.6 20.6 22.3 17.8 10.4 10.3 15.5 MEAN DAILY TEMP. (MDT) (C) 0.3 1.8 2.9 10.6 13.6 19.0 23.8 21.9 17.9 13.9 4.6 -0.6 10.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 14.0 88.1 36.0 0.0 0.0 0.0 0.0 138.1 HEATING DEG. DAYS(BASE 18 0C) 548.7 454.0 466.6 222.7 134.9 12.8 0.0 1.0 11.7 129.5 402.1 577.7 2961.6 DEWPOINT (MEAN C) -6.7 -3.9 -2.7 4.1 4.0 3.9 5.1 5.6 2.5 3.2 -0.2 -5.9 0.7 MIXING RATIO (G/KG) 2.90 3.54 3.95 6.34 6.34 6.33 6.88 7.11 5.69 5.97 4.73 3.08 5.24 VAPOUR PRESSURE (HPA) 3.84 4.67 5.19 8.33 8.31 8.27 8.99 9.31 7.51 7.88 6.23 4.06 6.88 SATURATION DEF. (HPA) 2.51 2.38 2.76 4.64 8.61 16.60 24.93 20.29 16.14 9.06 2.34 1.82 9.34 RELATIVE HUMIDITY (MEAN %) 66 72 72 69 57 39 31 37 37 54 78 73 57 RELATIVE HUMIDITY (MAX. %) 85 91 90 93 87 68 53 62 64 82 94 91 80 RELATIVE HUMIDITY (MIN. %) 41 47 50 44 31 20 17 20 20 29 55 50 35 RELATIVE HUMIDITY (MEAN% 03UTC) 81 85 87 88 81 65 53 61 61 78 90 83 76 RELATIVE HUMIDITY (MEAN% 09UTC) 50 61 60 51 37 25 21 25 24 36 67 61 43 RELATIVE HUMIDITY (MEAN% 15UTC) 57 59 61 59 38 24 20 25 27 41 69 64 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.2 33.3 68.4 89.4 94.1 2.0 0.0 0.5 0.0 28.5 56.5 20.2 405.1 DAYS WITH PRECIPITATION >=10 0 1 2 4 3 0 0 0 0 1 2 1 14 DAYS WITH PRECIPITATION >= 5 1 1 4 7 5 0 0 0 0 2 4 1 25 DAYS WITH PRECIPITATION >= 1 2 8 11 12 10 2 0 0 0 4 9 5 63 DAYS WITH PRECIPITATION 5 11 15 14 14 2 0 1 0 6 12 10 90 GREATEST DAILY PRECIPITATION 9.0 17.0 24.0 17.4 33.0 1.0 0.0 0.5 0.0 20.0 16.0 12.0 33.0 DAY 31 6 8 8 4 8 ** 6 ** 23 29 20 DAY WITH THUNDER STORM 0 0 0 5 6 1 0 0 0 4 0 0 16 DAYS WITH SNOW OR SLEET 4 9 7 0 0 0 0 0 0 0 5 8 33 DAYS WITH DUST 0 1 0 1 3 2 0 3 0 2 0 0 12 WIND DIRECTION (PREVAILING) 225 270 90 270 225 270 135 45 270 225 270 225 225 PREVAILING WIND SPEED(KNOTS) 8.8 7.2 5.8 8.4 8.7 6.9 9.2 9.0 5.2 10.1 6.8 10.8 9.0 PREVAILING WIND PERCENT 4.4 5.8 4.8 5.9 15.3 6.7 9.7 5.6 4.2 11.3 4.2 6.5 4.9 CALMS PERCENT OF WIND 83.1 86.6 80.6 77.8 59.7 80.0 69.4 70.2 80.0 75.0 84.3 74.6 76.6 NO. OF WIND OBSERVATION 248 224 248 239 248 240 248 248 240 248 236 248 2915 VECTOR WIND DIRECTION (MEAN) 259 271 242 212 213 258 114 90 257 242 217 230 220 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.4 0.2 0.4 1.8 0.5 1.3 0.6 0.2 1.6 0.7 1.1 0.5 WIND STEADINESES (MEAN %) 46.2 44.4 16.7 22.2 51.4 31.3 52.0 27.3 16.7 66.7 50.0 47.8 26.3 WIND SPEED (MEAN KNOTS) 1.3 0.9 1.2 1.8 3.5 1.6 2.5 2.2 1.2 2.4 1.4 2.3 1.9 FASTEST WIND DIRECTION 220 190 290 210 190 130 100 220 70 220 210 270 190 FASTEST WIND SPEED (KNOTS) 23 16 19 19 31 19 19 19 19 29 19 23 31 DAY 12 4 20 3 22 9 1 23 16 11 3 30 DAYS WITH SKY CLEAR (0-2)/8 15 10 6 6 15 28 25 27 28 14 7 15 196 DAYS WITH P.CLOUDY (3-6)/8 13 10 14 10 12 2 6 4 2 15 12 11 111 DAYS WITH CLOUDY (7-8)/8 3 8 11 14 4 0 0 0 0 2 11 5 58 DAYS WITH VISIBILITY =< 2 KM 2 1 10 2 2 0 0 0 0 2 4 1 24 DURATION OF SUNSHINE HOURS 182.7 134.6 143.7 165.7 294.9 360.8 348.7 339.1 308.6 232.2 123.2 162.1 2796.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 826.2 824.0 824.1 825.1 824.6 821.2 822.9 824.7 828.4 829.4 826.2 826.1 825.2 MAX. QFE PRESSURE IN HPA 834.0 831.0 833.0 831.3 834.0 829.2 828.0 829.0 833.0 835.0 832.8 836.1 836.1 DAY-HOUR 24- 6 22- 6 27- 6 5- 6 20-18 2- 6 16- 6 24-18 22- 6 15- 6 15-18 7- 6 MIN. QFE PRESSURE IN HPA 813.0 817.9 817.1 819.6 816.0 817.0 817.9 818.3 824.0 821.8 817.6 815.0 813.0 DAY-HOUR 19-12 15-12 8- 0 10-15 3-18 16-15 20-15 6-12 5-15 1-12 30-12 27-12 MEAN QNH PRESSURE IN HPA 1019.4 1016.8 1016.9 1018.1 1017.4 1013.4 1015.5 1017.6 1021.9 1023.1 1019.4 1019.2 1018.2 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1027.4 1025.4 1028.6 1022.9 1021.5 1022.7 1027.4 1029.8 1027.2 1031.1 1031.1 DAY-HOUR 24- 6 22- 6 27- 6 5- 6 20-18 2- 6 16- 6 24-18 22- 6 15- 6 15-18 7- 6 MIN. QNH PRESSURE IN HPA 1003.7 1009.5 1008.6 1011.6 1007.3 1008.5 1009.5 1010.0 1016.8 1014.2 1009.2 1006.1 1003.7 DAY-HOUR 19-12 15-12 8- 0 10-15 3-18 16-15 20-15 6-12 5-15 1-12 30-12 27-12 MEAN QFF PRESSURE IN HPA 1022.5 1018.4 1017.5 1012.6 1009.5 1001.3 1000.0 1003.6 1010.8 1015.5 1019.0 1022.9 1012.8 MAX. QFF PRESSURE IN HPA 1040.4 1027.4 1030.6 1021.2 1020.2 1013.0 1007.6 1010.9 1017.5 1023.5 1030.0 1038.8 1040.4 DAY-HOUR 24- 6 22- 6 17- 3 6- 6 20-18 2- 9 16- 3 31- 3 22- 6 21-15 16- 6 7- 6 MIN. QFF PRESSURE IN HPA 1004.5 1008.6 1006.7 1006.0 1000.7 993.4 992.8 995.2 1005.1 1003.1 1006.2 1004.0 992.8 DAY-HOUR 19-21 6- 3 31-12 3- 0 3-18 27-12 19-21 6-12 5-12 1- 9 8-12 27-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 826.4 823.9 824.1 824.8 824.3 821.4 822.9 824.9 828.4 829.3 826.4 826.1 825.2 MAX. QFE PRESSURE IN HPA 833.2 829.5 832.2 829.0 830.0 827.9 827.0 828.1 831.2 833.0 832.0 835.0 835.0 DAY 24 22 28 5 21 3 16 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 813.8 818.0 817.1 821.2 817.0 818.0 819.0 821.0 824.8 824.0 818.2 818.6 813.8 DAY 20 10 8 3 4 27 20 6 6 1 30 30 MEAN QNH PRESSURE IN HPA 1019.7 1016.6 1016.9 1017.8 1017.1 1013.7 1015.4 1017.8 1022.0 1023.1 1019.6 1019.3 1018.2 MAX. QNH PRESSURE IN HPA 1027.7 1023.3 1026.5 1022.7 1023.9 1021.4 1020.3 1021.6 1025.3 1027.4 1026.3 1029.8 1029.8 DAY 24 22 28 5 21 3 16 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1004.7 1009.7 1008.6 1013.5 1008.5 1009.7 1010.8 1013.2 1017.7 1016.8 1009.9 1010.4 1004.7 DAY 20 10 8 3 4 27 20 6 6 1 30 30 MEAN QFF PRESSURE IN HPA 1021.9 1017.7 1017.0 1012.0 1009.3 1001.8 1000.0 1003.5 1010.5 1014.7 1018.5 1022.1 1012.4 MAX. QFF PRESSURE IN HPA 1037.0 1023.6 1029.2 1019.0 1016.7 1011.2 1006.6 1008.2 1013.7 1019.1 1027.1 1034.9 1037.0 DAY 24 20 17 6 7 2 16 31 22 27 16 7 MIN. QFF PRESSURE IN HPA 1005.4 1010.1 1008.3 1006.0 1001.5 994.6 993.8 999.2 1006.2 1004.1 1007.1 1006.1 993.8 DAY 20 6 25 3 3 27 20 6 6 2 8 30 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 826.5 824.0 824.3 825.2 824.9 821.8 823.6 825.3 828.9 829.5 826.5 825.9 825.5 MAX. QFE PRESSURE IN HPA 833.0 830.0 832.2 829.7 830.5 828.2 827.3 828.1 832.1 833.2 832.0 835.0 835.0 DAY 24 22 28 5 21 2 16 25 22 15 16 7 MIN. QFE PRESSURE IN HPA 814.7 818.0 817.8 821.6 818.2 818.5 819.1 821.0 825.8 824.0 818.2 817.0 814.7 DAY 20 6 8 10 4 17 20 6 15 1 30 20 MEAN QNH PRESSURE IN HPA 1019.7 1016.7 1017.1 1018.2 1017.8 1014.2 1016.3 1018.3 1022.5 1023.3 1019.8 1019.0 1018.6 MAX. QNH PRESSURE IN HPA 1027.4 1023.9 1026.5 1023.5 1024.5 1021.8 1020.7 1021.6 1026.4 1027.7 1026.3 1029.8 1029.8 DAY 24 22 28 5 21 2 16 25 22 15 16 7 MIN. QNH PRESSURE IN HPA 1005.7 1009.7 1009.4 1013.9 1009.9 1010.3 1011.0 1013.2 1018.9 1016.8 1009.9 1008.5 1005.7 DAY 20 6 8 10 4 17 20 6 15 1 30 20 MEAN QFF PRESSURE IN HPA 1023.9 1019.0 1018.5 1013.6 1010.6 1002.7 1001.9 1005.7 1013.0 1017.1 1019.9 1023.4 1014.1 MAX. QFF PRESSURE IN HPA 1039.6 1025.9 1030.6 1019.2 1017.7 1012.3 1007.6 1010.9 1017.2 1023.0 1028.5 1037.5 1039.6 DAY 24 22 17 6 19 2 16 31 22 22 16 7 MIN. QFF PRESSURE IN HPA 1007.8 1008.6 1009.4 1009.6 1005.0 996.1 995.2 1000.5 1009.3 1006.4 1009.4 1007.5 995.2 DAY 12 6 25 3 3 29 20 6 4 2 10 30 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 827.5 825.0 825.2 826.0 825.5 822.2 824.3 826.0 829.8 830.5 827.3 826.9 826.3 MAX. QFE PRESSURE IN HPA 834.0 831.0 833.0 831.3 830.6 829.2 828.0 828.5 833.0 835.0 832.8 836.1 836.1 DAY 24 22 27 5 20 2 16 1 22 15 16 7 MIN. QFE PRESSURE IN HPA 815.8 818.4 819.6 821.8 819.5 819.0 819.5 821.2 826.2 825.0 820.0 817.9 815.8 DAY 20 15 8 10 4 27 20 6 15 1 30 20 MEAN QNH PRESSURE IN HPA 1020.9 1017.9 1018.1 1019.1 1018.6 1014.6 1017.1 1019.1 1023.6 1024.5 1020.7 1020.2 1019.5 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1027.4 1025.4 1024.6 1022.9 1021.5 1022.1 1027.4 1029.8 1027.2 1031.1 1031.1 DAY 24 22 27 5 20 2 16 1 22 15 16 7 MIN. QNH PRESSURE IN HPA 1007.0 1010.1 1011.6 1014.2 1011.4 1010.8 1011.4 1013.5 1019.4 1018.0 1012.0 1009.5 1007.0 DAY 20 15 8 10 4 27 20 6 15 1 30 20 MEAN QFF PRESSURE IN HPA 1025.0 1020.2 1019.1 1013.7 1010.5 1002.3 1001.3 1005.0 1012.5 1017.2 1021.0 1024.6 1014.4 MAX. QFF PRESSURE IN HPA 1040.4 1027.4 1030.4 1021.2 1016.9 1012.6 1006.3 1009.6 1017.5 1022.8 1030.0 1038.8 1040.4 DAY 24 22 17 6 18 2 16 31 22 27 16 7 MIN. QFF PRESSURE IN HPA 1008.0 1010.6 1010.6 1008.9 1005.3 995.4 993.9 999.0 1009.4 1007.8 1008.7 1007.8 993.9 DAY 12 25 25 10 10 27 20 6 15 1 8 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.3 824.5 824.5 825.4 824.9 821.4 823.4 825.1 828.9 829.4 826.3 826.0 825.5 MAX. QFE PRESSURE IN HPA 832.5 830.0 833.0 831.0 829.9 828.8 827.0 827.9 832.3 833.0 832.0 834.8 834.8 DAY 24 22 27 5 20 2 16 31 23 15 15 7 MIN. QFE PRESSURE IN HPA 815.0 818.6 820.0 821.0 819.0 818.0 819.0 820.2 825.9 822.5 818.8 816.2 815.0 DAY 20 15 8 10 4 27 20 6 6 1 30 27 MEAN QNH PRESSURE IN HPA 1019.4 1017.4 1017.3 1018.5 1017.8 1013.7 1016.1 1018.1 1022.5 1023.2 1019.4 1019.2 1018.6 MAX. QNH PRESSURE IN HPA 1026.8 1023.9 1027.4 1025.1 1023.8 1022.5 1020.3 1021.4 1026.6 1027.4 1026.3 1029.6 1029.6 DAY 24 22 27 5 20 2 16 31 23 15 15 7 MIN. QNH PRESSURE IN HPA 1006.1 1010.4 1012.0 1013.2 1010.8 1009.7 1010.8 1012.3 1019.0 1015.0 1010.6 1007.5 1006.1 DAY 20 15 8 10 4 27 20 6 6 1 30 27 MEAN QFF PRESSURE IN HPA 1021.8 1018.6 1017.3 1012.5 1009.4 1001.1 999.6 1003.0 1010.4 1014.4 1018.6 1022.4 1012.4 MAX. QFF PRESSURE IN HPA 1036.0 1024.3 1028.5 1021.2 1016.5 1013.0 1005.1 1010.0 1014.1 1020.5 1027.5 1035.3 1036.0 DAY 24 19 17 5 7 2 15 31 23 27 15 7 MIN. QFF PRESSURE IN HPA 1004.5 1010.4 1010.2 1007.2 1003.6 994.4 992.8 996.9 1006.4 1003.1 1007.4 1004.1 992.8 DAY 12 25 31 10 10 29 20 6 6 1 10 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.0 823.1 823.1 824.4 823.9 820.3 822.0 823.6 827.3 828.3 825.2 825.1 824.3 MAX. QFE PRESSURE IN HPA 832.0 828.0 831.0 829.7 828.9 827.9 825.3 826.9 831.0 832.0 831.4 832.3 832.3 DAY 24 22 27 5 20 2 15 31 23 15 15 7 MIN. QFE PRESSURE IN HPA 813.0 817.9 819.3 819.9 818.9 817.0 818.3 818.3 824.3 821.8 817.6 815.0 813.0 DAY 19 15 8 10 3 21 20 6 5 1 30 27 MEAN QNH PRESSURE IN HPA 1017.9 1015.7 1015.8 1017.3 1016.6 1012.4 1014.4 1016.3 1020.7 1021.9 1018.2 1018.1 1017.1 MAX. QNH PRESSURE IN HPA 1026.3 1021.5 1025.1 1023.5 1022.6 1021.4 1018.3 1020.2 1025.1 1026.3 1025.5 1026.6 1026.6 DAY 24 22 27 5 20 2 15 31 23 15 15 7 MIN. QNH PRESSURE IN HPA 1003.7 1009.5 1011.2 1011.9 1010.7 1008.5 1010.0 1010.0 1017.1 1014.2 1009.2 1006.1 1003.7 DAY 19 15 8 10 3 21 20 6 5 1 30 27 MEAN QFF PRESSURE IN HPA 1020.0 1016.5 1015.7 1011.4 1008.8 1000.3 998.9 1001.9 1009.1 1013.5 1017.1 1020.9 1011.2 MAX. QFF PRESSURE IN HPA 1036.2 1021.0 1026.6 1019.2 1015.0 1011.5 1004.2 1009.0 1013.2 1018.0 1025.9 1031.0 1036.2 DAY 24 19 17 5 18 2 15 31 23 16 15 7 MIN. QFF PRESSURE IN HPA 1004.9 1009.9 1006.7 1006.1 1003.3 993.4 993.4 995.2 1005.1 1003.7 1006.2 1004.0 993.4 DAY 19 6 31 10 30 27 20 6 5 1 8 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.6 823.4 823.2 824.3 823.7 819.9 821.5 823.3 827.1 828.6 825.6 825.6 824.3 MAX. QFE PRESSURE IN HPA 832.0 827.4 830.9 829.0 828.6 827.0 825.0 826.5 830.7 834.2 831.4 832.3 834.2 DAY 23 22 27 5 19 2 15 31 23 21 15 7 MIN. QFE PRESSURE IN HPA 814.0 818.4 819.0 819.6 816.8 817.0 817.9 818.7 824.0 823.0 818.1 815.0 814.0 DAY 19 15 7 10 3 16 20 6 5 1 30 27 MEAN QNH PRESSURE IN HPA 1018.6 1016.1 1015.8 1017.2 1016.4 1011.9 1013.8 1015.9 1020.4 1022.2 1018.6 1018.7 1017.1 MAX. QNH PRESSURE IN HPA 1026.3 1020.8 1025.0 1022.7 1022.2 1020.3 1018.0 1019.7 1024.7 1028.9 1025.5 1026.6 1028.9 DAY 23 22 27 5 19 2 15 31 23 21 15 7 MIN. QNH PRESSURE IN HPA 1004.9 1010.1 1010.8 1011.6 1008.2 1008.5 1009.5 1010.5 1016.8 1015.6 1009.8 1006.1 1004.9 DAY 19 15 7 10 3 16 20 6 5 1 30 27 MEAN QFF PRESSURE IN HPA 1022.7 1018.1 1017.1 1012.5 1009.0 1000.3 999.3 1003.2 1010.7 1016.0 1018.8 1023.0 1012.5 MAX. QFF PRESSURE IN HPA 1039.2 1022.3 1027.5 1018.3 1015.5 1010.5 1004.6 1010.0 1015.6 1023.5 1027.5 1034.7 1039.2 DAY 24 19 17 5 18 2 15 31 23 21 15 6 MIN. QFF PRESSURE IN HPA 1007.6 1010.5 1008.0 1006.5 1003.9 994.5 993.8 996.6 1006.7 1006.7 1007.1 1004.1 993.8 DAY 19 6 31 10 10 30 19 4 29 2 8 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 826.4 824.2 824.3 825.3 824.7 820.9 822.7 824.5 828.2 829.7 826.3 826.5 825.3 MAX. QFE PRESSURE IN HPA 833.8 828.7 831.5 829.4 834.0 827.6 826.5 829.0 831.2 833.5 832.8 835.0 835.0 DAY 23 22 27 5 20 2 31 24 23 21 15 6 MIN. QFE PRESSURE IN HPA 813.4 819.5 819.0 821.0 816.0 817.2 818.2 820.2 824.8 825.2 819.0 816.0 813.4 DAY 19 15 7 10 3 16 20 4 5 1 8 27 MEAN QNH PRESSURE IN HPA 1019.6 1017.0 1017.1 1018.3 1017.6 1013.1 1015.3 1017.4 1021.7 1023.5 1019.4 1019.7 1018.3 MAX. QNH PRESSURE IN HPA 1028.4 1022.3 1025.7 1023.2 1028.6 1021.0 1019.7 1022.7 1025.3 1028.0 1027.2 1029.8 1029.8 DAY 23 22 27 5 20 2 31 24 23 21 15 6 MIN. QNH PRESSURE IN HPA 1004.2 1011.4 1010.8 1013.2 1007.3 1008.7 1009.9 1012.3 1017.7 1018.2 1010.8 1007.3 1004.2 DAY 19 15 7 10 3 16 20 4 5 1 8 27 MEAN QFF PRESSURE IN HPA 1023.6 1019.2 1018.0 1012.9 1009.5 1000.8 999.7 1003.4 1010.8 1016.3 1019.7 1024.2 1013.2 MAX. QFF PRESSURE IN HPA 1040.3 1024.7 1028.5 1020.3 1020.2 1010.0 1004.8 1009.2 1015.0 1021.1 1029.9 1037.1 1040.3 DAY 24 19 17 5 20 2 27 24 23 21 15 6 MIN. QFF PRESSURE IN HPA 1005.5 1012.5 1008.9 1008.1 1000.7 994.4 993.5 997.5 1007.3 1009.5 1007.2 1004.0 993.5 DAY 19 25 31 10 3 26 20 4 5 1 7 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 826.2 824.3 824.4 825.4 824.8 821.5 823.2 825.1 828.4 829.7 826.3 826.4 825.5 MAX. QFE PRESSURE IN HPA 833.3 829.3 832.2 829.4 832.2 827.9 827.3 828.7 832.0 833.0 832.8 835.0 835.0 DAY 23 21 27 4 20 2 31 24 23 14 15 6 MIN. QFE PRESSURE IN HPA 813.7 819.0 818.0 822.1 818.8 818.0 818.9 821.2 824.8 824.4 818.3 817.6 813.7 DAY 19 9 7 9 3 16 19 5 5 1 29 27 MEAN QNH PRESSURE IN HPA 1019.4 1017.1 1017.2 1018.5 1017.7 1013.8 1015.8 1018.1 1022.0 1023.5 1019.5 1019.6 1018.5 MAX. QNH PRESSURE IN HPA 1027.8 1023.1 1026.5 1023.2 1026.5 1021.4 1020.7 1022.3 1026.3 1027.4 1027.2 1029.8 1029.8 DAY 23 21 27 4 20 2 31 24 23 14 15 6 MIN. QNH PRESSURE IN HPA 1004.6 1010.8 1009.7 1014.5 1010.6 1009.7 1010.7 1013.5 1017.7 1017.2 1010.0 1009.2 1004.6 DAY 19 9 7 9 3 16 19 5 5 1 29 27 MEAN QFF PRESSURE IN HPA 1021.8 1018.2 1017.1 1012.5 1009.1 1001.1 999.4 1003.3 1010.0 1014.8 1018.8 1022.9 1012.4 MAX. QFF PRESSURE IN HPA 1037.0 1024.5 1028.3 1020.6 1016.9 1011.2 1005.4 1009.1 1014.5 1019.6 1028.4 1035.6 1037.0 DAY 24 19 16 5 6 1 15 31 23 26 20 6 MIN. QFF PRESSURE IN HPA 1004.5 1010.9 1008.2 1008.5 1003.0 995.1 992.8 998.4 1005.8 1004.7 1007.1 1005.7 992.8 DAY 19 24 7 17 9 25 19 14 5 1 7 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.7 3.8 4.9 11.2 18.1 21.6 23.8 22.7 18.5 10.0 6.3 1.8 12.0 MINIMUN AIR TEMPERATURE (C) -4.4 -2.6 -0.2 3.6 8.7 10.1 12.9 11.5 7.9 4.6 -0.6 -2.8 4.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 20 11 7 0 0 0 0 0 0 0 5 12 55 DAYS WITH FREEZING MIN.<= 0 28 21 13 7 0 0 0 0 0 4 20 23 116 TEMPERATURE RECORDS LOWEST(C) -9.0 -8.6 -7.2 -2.2 2.2 5.6 8.4 7.0 4.0 -1.6 -9.8 -10.2 -10.2 DAY 9 7 22 2 6 8 10 27 25 12 30 2 MAXIMUM AIR TEMPERATURE (C) 9.6 11.7 10.8 18.4 25.7 31.2 33.2 33.0 29.0 16.7 14.3 7.8 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 25 26 12 0 0 0 83 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.4 17.6 15.0 25.4 29.2 34.0 37.2 36.0 32.8 29.4 19.8 14.6 37.2 DAY 31 1 8 30 15 27 18 21 9 3 14 12 DIF. BETWEEN (MAX.-MIN.) (C) 14.0 14.3 11.0 14.8 17.0 21.1 20.3 21.5 21.1 12.1 14.9 10.6 16.1 MEAN DAILY TEMP. (MDT) (C) 2.6 4.6 5.3 11.0 17.2 20.7 23.0 22.2 18.4 10.6 6.8 2.5 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 13.7 55.3 43.0 0.9 0.0 0.0 0.0 112.9 HEATING DEG. DAYS(BASE 18 0C) 477.9 376.1 357.2 201.9 34.1 0.0 0.0 0.0 11.6 215.8 334.9 481.5 2491.0 DEWPOINT (MEAN C) -5.5 -3.8 -2.2 0.3 5.7 3.4 6.0 4.0 2.4 2.6 -1.3 -3.9 0.6 MIXING RATIO (G/KG) 3.18 3.65 4.17 4.90 7.14 6.05 7.37 6.38 5.68 5.81 4.34 3.63 5.19 VAPOUR PRESSURE (HPA) 4.20 4.80 5.46 6.45 9.37 7.94 9.63 8.35 7.47 7.66 5.74 4.78 6.82 SATURATION DEF. (HPA) 3.17 3.75 3.54 8.02 12.67 20.10 22.07 21.51 15.92 5.54 4.53 2.54 10.28 RELATIVE HUMIDITY (MEAN %) 64 63 64 51 49 33 35 33 38 65 63 69 52 RELATIVE HUMIDITY (MAX. %) 88 90 87 79 81 56 57 55 63 87 89 92 77 RELATIVE HUMIDITY (MIN. %) 36 36 41 31 29 18 19 18 21 43 35 44 31 RELATIVE HUMIDITY (MEAN% 03UTC) 78 85 79 73 75 54 57 54 60 81 85 83 72 RELATIVE HUMIDITY (MEAN% 09UTC) 48 47 52 38 35 23 25 23 27 51 44 54 39 RELATIVE HUMIDITY (MEAN% 15UTC) 50 46 55 37 35 22 25 22 25 57 47 60 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.3 22.3 91.1 22.9 12.8 0.1 1.0 1.4 1.7 147.1 6.6 88.9 405.2 DAYS WITH PRECIPITATION >=10 0 0 4 0 0 0 0 0 0 4 0 3 11 DAYS WITH PRECIPITATION >= 5 0 1 6 3 0 0 0 0 0 8 1 5 24 DAYS WITH PRECIPITATION >= 1 4 6 14 6 5 0 1 1 0 11 1 8 57 DAYS WITH PRECIPITATION 5 11 15 8 6 1 1 2 2 13 3 8 75 GREATEST DAILY PRECIPITATION 3.4 6.3 19.0 8.0 4.0 0.1 1.0 1.0 0.9 56.0 6.0 32.0 56.0 DAY 26 18 3 19 5 18 28 8 21 26 7 23 DAY WITH THUNDER STORM 0 0 0 0 2 0 0 0 1 7 0 0 10 DAYS WITH SNOW OR SLEET 3 2 4 1 0 0 0 0 0 0 0 2 12 DAYS WITH DUST 1 1 0 2 6 9 6 1 3 2 0 1 32 WIND DIRECTION (PREVAILING) 180 225 225 225 225 225 135 270 270 90 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.5 10.3 10.3 12.3 8.6 5.7 7.8 6.0 8.4 6.9 12.1 10.9 10.2 PREVAILING WIND PERCENT 7.7 8.5 21.1 25.0 11.7 5.4 5.2 6.5 7.1 8.5 8.8 10.9 9.3 CALMS PERCENT OF WIND 74.6 77.2 57.9 47.8 71.3 79.6 77.4 78.6 80.4 69.4 75.8 64.5 71.3 NO. OF WIND OBSERVATION 248 224 242 228 230 240 248 248 240 248 240 248 2884 VECTOR WIND DIRECTION (MEAN) 223 213 228 228 246 227 120 279 249 92 202 221 224 VECTOR WIND MAGNITUDE(KNOTS) 1.7 1.4 2.8 4.3 1.4 0.4 0.3 0.2 0.8 0.6 1.4 1.7 1.3 WIND STEADINESES (MEAN %) 63.0 66.7 68.3 78.2 51.9 26.7 17.6 12.5 57.1 28.6 63.6 54.8 50.0 WIND SPEED (MEAN KNOTS) 2.7 2.1 4.1 5.5 2.7 1.5 1.7 1.6 1.4 2.1 2.2 3.1 2.6 FASTEST WIND DIRECTION 210 180 210 210 330 250 60 90 270 240 210 210 210 FASTEST WIND SPEED (KNOTS) 21 23 29 23 19 19 19 19 19 27 39 29 39 DAY 24 28 14 26 2 4 12 1 23 6 3 19 DAYS WITH SKY CLEAR (0-2)/8 20 7 5 13 10 25 27 23 28 10 18 11 197 DAYS WITH P.CLOUDY (3-6)/8 7 17 17 16 16 5 4 8 1 9 8 13 121 DAYS WITH CLOUDY (7-8)/8 4 4 9 1 5 0 0 0 1 12 4 7 47 DAYS WITH VISIBILITY =< 2 KM 0 3 1 0 1 0 0 0 0 4 2 1 12 DURATION OF SUNSHINE HOURS 227.1 173.5 198.1 271.2 246.7 324.9 349.1 324.6 303.8 169.9 203.5 158.9 2951.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 827.4 825.3 820.7 825.2 826.4 823.7 822.9 823.0 826.0 828.7 829.3 825.8 825.4 MAX. QFE PRESSURE IN HPA 835.5 834.0 828.8 832.4 831.0 829.1 827.0 830.0 831.8 834.8 837.2 837.0 837.2 DAY-HOUR 17- 6 1- 6 23- 6 22- 3 13- 6 28- 6 29-21 7-21 26- 6 16- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 816.2 817.2 810.0 815.9 821.2 817.5 816.8 817.9 821.6 820.7 819.5 816.0 810.0 DAY-HOUR 6-12 10-12 14- 0 4-12 22-12 12-12 3-15 25-12 12-12 4-12 7- 9 23-21 MEAN QNH PRESSURE IN HPA 1020.8 1018.4 1012.9 1018.2 1019.6 1016.4 1015.5 1015.6 1019.1 1022.3 1023.0 1018.9 1018.4 MAX. QNH PRESSURE IN HPA 1030.4 1028.6 1022.5 1026.7 1025.1 1022.8 1020.3 1023.9 1026.0 1029.6 1032.4 1032.2 1032.4 DAY-HOUR 17- 6 1- 6 23- 6 22- 3 13- 6 28- 6 29-21 7-21 26- 6 16- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1007.5 1008.7 1000.2 1007.2 1013.5 1009.1 1008.2 1009.5 1013.9 1012.9 1011.4 1007.3 1000.2 DAY-HOUR 6-12 10-12 14- 0 4-12 22-12 12-12 3-15 25-12 12-12 4-12 7- 9 23-21 MEAN QFF PRESSURE IN HPA 1022.4 1018.1 1011.5 1012.6 1008.8 1003.2 1000.7 1001.6 1008.1 1017.3 1020.9 1020.2 1012.1 MAX. QFF PRESSURE IN HPA 1035.4 1032.2 1023.2 1025.3 1017.3 1008.9 1010.0 1010.2 1016.7 1026.9 1037.7 1038.2 1038.2 DAY-HOUR 12- 6 12- 6 23-18 22- 3 6- 3 6- 6 29- 3 8- 3 25- 6 17- 6 30- 3 1- 6 MIN. QFF PRESSURE IN HPA 1007.8 1007.6 998.9 999.6 1002.0 995.6 994.3 994.7 999.9 1002.7 1004.9 1006.5 994.3 DAY-HOUR 24- 0 9- 0 14- 0 19-12 22-12 12-12 20-12 25-12 6- 9 4-12 7- 9 13- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 827.5 825.7 820.4 825.1 826.2 823.9 823.2 823.4 826.3 828.7 829.3 826.1 825.5 MAX. QFE PRESSURE IN HPA 834.0 833.5 828.0 831.7 830.0 827.7 826.3 829.5 831.0 834.0 836.0 836.2 836.2 DAY 12 1 24 22 13 29 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 819.3 820.4 810.0 817.0 822.0 819.0 819.0 820.4 824.0 823.7 822.1 816.5 810.0 DAY 7 10 14 5 22 13 3 25 1 4 7 24 MEAN QNH PRESSURE IN HPA 1020.9 1018.8 1012.5 1018.1 1019.4 1016.6 1015.8 1016.1 1019.5 1022.3 1023.0 1019.3 1018.5 MAX. QNH PRESSURE IN HPA 1028.6 1028.0 1021.5 1025.9 1023.9 1021.2 1019.5 1023.3 1025.1 1028.6 1031.0 1031.2 1031.2 DAY 12 1 24 22 13 29 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1011.2 1012.5 1000.2 1008.5 1014.4 1010.8 1010.8 1012.5 1016.8 1016.4 1014.5 1007.9 1000.2 DAY 7 10 14 5 22 13 3 25 1 4 7 24 MEAN QFF PRESSURE IN HPA 1021.4 1017.7 1010.5 1012.4 1008.5 1003.5 1001.0 1001.7 1008.0 1016.7 1020.0 1019.6 1011.7 MAX. QFF PRESSURE IN HPA 1031.5 1029.6 1021.0 1023.5 1016.9 1008.1 1007.2 1008.6 1014.7 1024.0 1035.6 1035.3 1035.6 DAY 12 22 24 22 13 6 29 8 25 17 30 1 MIN. QFF PRESSURE IN HPA 1007.8 1007.6 998.9 1000.6 1002.3 997.9 996.1 998.0 1002.7 1005.3 1008.0 1007.3 996.1 DAY 24 9 14 19 22 13 3 25 6 6 7 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 827.5 825.7 820.8 825.4 826.7 824.2 823.6 823.8 826.5 828.8 829.3 825.9 825.7 MAX. QFE PRESSURE IN HPA 835.0 833.5 828.0 832.4 830.0 828.4 826.9 829.7 831.4 834.2 836.0 836.2 836.2 DAY 17 1 24 22 13 28 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 820.3 819.4 811.0 817.6 822.1 819.0 819.3 820.0 824.0 823.2 821.0 817.5 811.0 DAY 3 10 14 5 22 13 3 25 12 4 7 24 MEAN QNH PRESSURE IN HPA 1020.9 1018.8 1012.9 1018.5 1020.0 1017.1 1016.3 1016.5 1019.8 1022.5 1023.0 1019.1 1018.8 MAX. QNH PRESSURE IN HPA 1029.8 1028.0 1021.5 1026.7 1023.9 1022.0 1020.2 1023.5 1025.5 1028.9 1031.0 1031.2 1031.2 DAY 17 1 24 22 13 28 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1012.4 1011.3 1001.4 1009.2 1014.5 1010.8 1011.2 1012.0 1016.8 1015.8 1013.2 1009.1 1001.4 DAY 3 10 14 5 22 13 3 25 12 4 7 24 MEAN QFF PRESSURE IN HPA 1023.3 1019.2 1012.3 1013.7 1010.3 1004.9 1002.7 1003.8 1010.0 1018.3 1021.9 1020.9 1013.4 MAX. QFF PRESSURE IN HPA 1033.9 1030.1 1022.3 1025.3 1017.3 1008.6 1010.0 1010.2 1016.5 1026.5 1037.7 1038.0 1038.0 DAY 12 12 24 22 6 1 29 8 30 17 30 1 MIN. QFF PRESSURE IN HPA 1010.1 1009.2 1001.4 1002.0 1004.4 998.9 998.2 999.7 1004.9 1007.6 1007.3 1009.0 998.2 DAY 24 9 14 19 22 13 3 25 6 6 7 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 828.5 826.4 821.7 826.1 827.2 824.9 824.0 824.2 827.2 829.7 830.3 826.9 826.4 MAX. QFE PRESSURE IN HPA 835.5 834.0 828.8 832.3 831.0 829.1 827.0 830.0 831.8 834.8 837.2 837.0 837.2 DAY 17 1 23 22 13 28 30 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 820.6 819.3 812.4 818.0 822.8 820.2 818.8 820.0 825.0 824.0 821.4 819.0 812.4 DAY 6 10 14 4 22 13 3 25 2 4 7 24 MEAN QNH PRESSURE IN HPA 1022.1 1019.7 1014.1 1019.2 1020.6 1017.8 1016.8 1017.0 1020.6 1023.5 1024.2 1020.2 1019.6 MAX. QNH PRESSURE IN HPA 1030.4 1028.6 1022.5 1026.6 1025.1 1022.8 1020.3 1023.9 1026.0 1029.6 1032.4 1032.2 1032.4 DAY 17 1 23 22 13 28 30 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1012.7 1011.2 1003.0 1009.7 1015.3 1012.3 1010.6 1012.0 1018.0 1016.8 1013.7 1010.8 1003.0 DAY 6 10 14 4 22 13 3 25 2 4 7 24 MEAN QFF PRESSURE IN HPA 1024.9 1020.3 1012.8 1013.6 1009.2 1004.4 1001.7 1002.9 1009.4 1018.9 1022.6 1022.1 1013.6 MAX. QFF PRESSURE IN HPA 1035.4 1032.2 1023.2 1023.4 1015.1 1008.9 1008.7 1008.9 1016.7 1026.9 1037.6 1038.2 1038.2 DAY 12 12 23 22 13 6 29 8 25 17 30 1 MIN. QFF PRESSURE IN HPA 1010.1 1011.1 1003.2 1003.7 1003.4 998.5 996.0 998.5 1003.1 1005.8 1007.1 1009.1 996.0 DAY 24 9 14 19 22 13 3 25 6 4 7 13 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 827.8 825.7 821.0 825.4 826.8 824.0 823.2 823.1 826.2 828.8 829.3 826.0 825.6 MAX. QFE PRESSURE IN HPA 834.7 833.0 827.2 831.9 830.4 828.6 826.0 828.6 830.8 833.9 836.4 835.5 836.4 DAY 12 1 23 22 5 28 29 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 818.6 818.2 812.5 817.0 822.0 819.0 818.3 819.4 823.0 822.7 819.5 818.5 812.5 DAY 6 10 14 4 22 12 3 25 12 4 7 23 MEAN QNH PRESSURE IN HPA 1021.2 1018.8 1013.3 1018.4 1020.1 1016.8 1015.8 1015.8 1019.4 1022.5 1023.1 1019.1 1018.7 MAX. QNH PRESSURE IN HPA 1029.5 1027.4 1020.6 1026.1 1024.4 1022.2 1019.1 1022.2 1024.8 1028.5 1031.5 1030.4 1031.5 DAY 12 1 23 22 5 28 29 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1010.4 1009.9 1003.1 1008.5 1014.4 1010.8 1010.0 1011.3 1015.6 1015.2 1011.4 1010.3 1003.1 DAY 6 10 14 4 22 12 3 25 12 4 7 23 MEAN QFF PRESSURE IN HPA 1022.2 1017.7 1011.4 1012.2 1008.6 1002.8 1000.1 1000.8 1007.3 1016.9 1020.2 1019.9 1011.7 MAX. QFF PRESSURE IN HPA 1033.9 1027.7 1020.7 1021.9 1017.2 1007.0 1007.0 1007.0 1015.2 1024.4 1035.8 1034.6 1035.8 DAY 12 22 23 22 5 6 29 8 25 28 30 1 MIN. QFF PRESSURE IN HPA 1009.4 1008.3 1002.7 1000.7 1003.1 996.7 995.4 996.0 999.9 1004.0 1004.9 1006.5 995.4 DAY 24 4 19 19 22 12 20 21 6 4 7 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 826.4 824.4 819.9 824.3 825.8 822.8 821.9 821.8 824.7 827.8 828.2 824.8 824.4 MAX. QFE PRESSURE IN HPA 833.1 831.5 826.2 830.1 830.0 827.1 824.8 826.9 829.4 832.2 835.2 834.0 835.2 DAY 17 1 23 22 12 28 29 7 25 15 30 1 MIN. QFE PRESSURE IN HPA 816.2 817.2 811.6 815.9 821.2 817.5 817.3 817.9 821.6 820.7 820.0 817.2 811.6 DAY 6 10 19 4 22 12 3 25 12 4 7 23 MEAN QNH PRESSURE IN HPA 1019.6 1017.2 1012.0 1017.1 1018.9 1015.4 1014.2 1014.2 1017.6 1021.3 1021.8 1017.7 1017.2 MAX. QNH PRESSURE IN HPA 1027.6 1025.7 1019.4 1024.0 1023.9 1020.4 1017.7 1020.2 1023.2 1026.5 1030.1 1028.6 1030.1 DAY 17 1 23 22 12 28 29 7 25 15 30 1 MIN. QNH PRESSURE IN HPA 1007.5 1008.7 1002.1 1007.2 1013.5 1009.1 1008.8 1009.5 1013.9 1012.9 1012.0 1008.7 1002.1 DAY 6 10 19 4 22 12 3 25 12 4 7 23 MEAN QFF PRESSURE IN HPA 1019.8 1016.1 1009.9 1011.0 1007.9 1002.0 999.2 999.7 1005.9 1015.6 1018.7 1018.0 1010.3 MAX. QFF PRESSURE IN HPA 1030.9 1025.0 1019.8 1020.3 1013.5 1006.3 1004.5 1005.6 1012.6 1023.2 1034.1 1032.0 1034.1 DAY 12 22 23 22 12 28 29 7 25 28 30 1 MIN. QFF PRESSURE IN HPA 1009.0 1007.9 999.0 999.6 1002.0 995.6 994.3 994.7 1000.8 1002.7 1006.3 1006.7 994.3 DAY 24 9 19 19 22 12 20 25 12 4 7 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 826.6 824.3 820.0 824.4 825.5 822.4 821.6 821.6 824.6 827.9 828.7 825.3 824.4 MAX. QFE PRESSURE IN HPA 833.0 831.7 826.2 829.3 830.0 826.3 825.0 827.0 829.0 832.0 835.2 834.3 835.2 DAY 12 1 23 22 3 28 28 8 26 15 30 1 MIN. QFE PRESSURE IN HPA 816.9 818.0 811.4 816.0 821.5 817.9 816.8 817.9 822.0 821.0 820.4 817.8 811.4 DAY 6 10 13 4 22 12 3 25 12 4 7 23 MEAN QNH PRESSURE IN HPA 1019.9 1017.2 1012.1 1017.2 1018.6 1014.9 1013.9 1013.9 1017.5 1021.4 1022.3 1018.4 1017.3 MAX. QNH PRESSURE IN HPA 1027.4 1025.9 1019.4 1023.1 1023.9 1019.5 1018.0 1020.3 1022.7 1026.3 1030.1 1029.0 1030.1 DAY 12 1 23 22 3 28 28 8 26 15 30 1 MIN. QNH PRESSURE IN HPA 1008.4 1009.7 1001.8 1007.3 1013.8 1009.5 1008.2 1009.5 1014.4 1013.2 1012.5 1009.4 1001.8 DAY 6 10 13 4 22 12 3 25 12 4 7 23 MEAN QFF PRESSURE IN HPA 1022.0 1017.5 1011.4 1012.2 1008.9 1002.5 1000.1 1001.1 1007.7 1017.3 1021.2 1020.2 1011.8 MAX. QFF PRESSURE IN HPA 1032.5 1025.7 1020.5 1020.2 1013.5 1006.6 1007.5 1008.6 1014.6 1024.5 1036.9 1035.7 1036.9 DAY 12 12 23 22 5 1 28 8 30 28 30 1 MIN. QFF PRESSURE IN HPA 1011.6 1010.0 1000.9 1002.3 1003.1 997.6 994.8 996.0 1002.9 1005.8 1006.8 1007.6 994.8 DAY 24 16 19 19 23 12 20 21 1 4 7 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 827.5 825.2 821.1 825.7 826.6 823.5 822.9 823.0 826.1 828.8 829.6 826.0 825.5 MAX. QFE PRESSURE IN HPA 834.2 832.0 828.4 830.0 830.4 827.0 826.8 829.2 830.7 833.9 836.0 835.0 836.0 DAY 17 1 23 21 12 28 29 7 25 15 30 1 MIN. QFE PRESSURE IN HPA 816.6 819.2 810.6 818.0 822.4 818.0 818.4 819.9 823.2 823.0 823.2 817.0 810.6 DAY 6 10 13 4 22 12 3 24 10 4 7 23 MEAN QNH PRESSURE IN HPA 1020.9 1018.2 1013.3 1018.7 1019.8 1016.2 1015.4 1015.6 1019.2 1022.4 1023.4 1019.1 1018.5 MAX. QNH PRESSURE IN HPA 1028.9 1026.3 1022.0 1023.9 1024.4 1020.3 1020.1 1022.9 1024.7 1028.5 1031.0 1029.8 1031.0 DAY 17 1 23 21 12 28 29 7 25 15 30 1 MIN. QNH PRESSURE IN HPA 1008.0 1011.1 1000.9 1009.7 1014.9 1009.7 1010.1 1011.9 1015.8 1015.6 1015.8 1008.5 1000.9 DAY 6 10 13 4 22 12 3 24 10 4 7 23 MEAN QFF PRESSURE IN HPA 1023.6 1018.9 1012.2 1013.2 1008.8 1002.8 1000.5 1001.7 1008.3 1017.9 1021.9 1021.1 1012.5 MAX. QFF PRESSURE IN HPA 1034.1 1028.1 1023.2 1020.8 1013.8 1007.3 1008.1 1008.2 1016.4 1026.0 1036.8 1035.9 1036.8 DAY 12 11 23 21 19 1 29 7 25 28 30 1 MIN. QFF PRESSURE IN HPA 1009.5 1011.7 1000.2 1002.0 1003.7 996.2 995.0 997.7 1003.6 1005.1 1010.4 1008.3 995.0 DAY 6 25 13 18 22 12 20 24 1 4 6 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 827.7 825.3 821.1 825.6 826.5 823.9 823.3 823.4 826.6 828.8 829.7 825.8 825.6 MAX. QFE PRESSURE IN HPA 834.2 832.0 828.0 831.0 830.0 827.7 827.0 830.0 831.0 834.0 836.8 835.1 836.8 DAY 17 1 23 21 12 28 29 7 25 15 30 1 MIN. QFE PRESSURE IN HPA 818.3 820.0 810.6 817.0 822.4 819.0 820.0 820.5 824.0 824.0 824.1 816.0 810.6 DAY 6 28 13 4 22 12 2 25 10 3 6 23 MEAN QNH PRESSURE IN HPA 1021.1 1018.4 1013.3 1018.6 1019.8 1016.6 1016.0 1016.1 1019.8 1022.5 1023.5 1018.9 1018.7 MAX. QNH PRESSURE IN HPA 1028.9 1026.3 1021.5 1025.1 1023.9 1021.2 1020.3 1023.9 1025.1 1028.6 1031.9 1029.9 1031.9 DAY 17 1 23 21 12 28 29 7 25 15 30 1 MIN. QNH PRESSURE IN HPA 1010.0 1012.0 1000.9 1008.5 1014.9 1010.8 1012.0 1012.6 1016.8 1016.8 1016.9 1007.3 1000.9 DAY 6 28 13 4 22 12 2 25 10 3 6 23 MEAN QFF PRESSURE IN HPA 1022.1 1017.3 1011.5 1012.4 1008.3 1002.7 1000.5 1001.4 1008.0 1017.0 1020.7 1019.7 1011.8 MAX. QFF PRESSURE IN HPA 1031.8 1027.4 1021.3 1021.1 1015.2 1006.9 1007.2 1008.6 1014.6 1024.4 1036.7 1034.4 1036.7 DAY 12 11 23 21 12 3 29 7 29 28 30 1 MIN. QFF PRESSURE IN HPA 1010.8 1009.1 1000.9 1001.0 1002.9 997.1 996.2 997.5 1001.9 1005.4 1009.4 1007.6 996.2 DAY 2 8 13 18 22 12 16 13 5 4 6 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.1 -1.1 5.9 10.4 17.0 20.2 24.1 23.4 18.3 12.5 6.5 1.7 11.4 MINIMUN AIR TEMPERATURE (C) -6.2 -5.4 -0.4 3.8 6.4 9.0 12.8 12.3 6.3 3.2 -0.2 -4.2 3.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 19 20 8 4 0 0 0 0 0 0 12 16 79 DAYS WITH FREEZING MIN.<= 0 31 27 18 9 0 0 0 0 0 1 16 25 127 TEMPERATURE RECORDS LOWEST(C) -18.0 -12.2 -8.6 -6.4 1.2 6.2 8.0 7.0 2.8 -2.0 -12.0 -18.6 -18.6 DAY 20 14 6 2 5 3 1 31 27 23 15 29 MAXIMUM AIR TEMPERATURE (C) 2.4 4.2 13.0 17.4 25.2 29.6 33.9 33.3 29.7 22.5 14.5 8.6 19.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 15 27 25 15 0 0 0 83 DAYS WITH MAXIMUM TEMP. <= 0 7 7 0 0 0 0 0 0 0 0 0 3 17 TEMPERATURE RECORDS HIGHEST(C) 6.0 11.8 19.0 23.2 30.8 34.4 38.4 38.0 34.0 27.2 21.0 18.0 38.4 DAY 4 29 26 17 27 13 14 1 11 4 2 5 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 9.6 13.4 13.6 18.8 20.6 21.1 21.0 23.4 19.3 14.7 12.8 16.4 MEAN DAILY TEMP. (MDT) (C) -1.9 -0.6 6.3 10.6 15.8 19.3 23.4 22.8 18.0 12.9 7.1 2.2 11.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 4.0 81.2 61.2 0.2 0.0 0.0 0.0 146.6 HEATING DEG. DAYS(BASE 18 0C) 615.8 539.9 362.8 221.8 72.4 7.1 0.3 0.3 23.0 159.1 325.9 489.6 2817.9 DEWPOINT (MEAN C) -6.3 -4.9 -3.7 1.0 1.9 5.2 6.9 5.8 0.7 0.7 -2.9 -5.2 -0.1 MIXING RATIO (G/KG) 3.05 3.35 3.70 5.36 5.47 6.85 7.85 7.28 5.04 5.06 4.05 3.34 5.04 VAPOUR PRESSURE (HPA) 4.03 4.41 4.85 7.03 7.19 8.96 10.22 9.50 6.64 6.69 5.35 4.40 6.61 SATURATION DEF. (HPA) 1.41 1.59 5.03 6.35 13.62 16.60 22.27 21.70 16.72 9.11 5.35 3.12 10.24 RELATIVE HUMIDITY (MEAN %) 76 78 55 57 40 41 37 36 35 50 56 64 52 RELATIVE HUMIDITY (MAX. %) 90 92 83 84 70 70 62 63 60 79 87 85 77 RELATIVE HUMIDITY (MIN. %) 57 59 30 33 22 22 20 20 18 25 31 41 32 RELATIVE HUMIDITY (MEAN% 03UTC) 85 89 78 82 67 69 60 63 58 76 74 80 73 RELATIVE HUMIDITY (MEAN% 09UTC) 66 67 43 42 26 29 27 25 23 33 39 53 39 RELATIVE HUMIDITY (MEAN% 15UTC) 74 72 39 43 25 26 23 22 20 33 41 53 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.6 54.9 22.8 60.6 0.2 2.2 7.0 2.2 0.0 24.0 18.9 44.8 282.2 DAYS WITH PRECIPITATION >=10 0 2 0 1 0 0 0 0 0 1 0 2 6 DAYS WITH PRECIPITATION >= 5 6 4 1 6 0 0 1 0 0 2 3 4 27 DAYS WITH PRECIPITATION >= 1 9 11 9 11 0 1 2 1 0 4 4 5 57 DAYS WITH PRECIPITATION 11 13 10 14 1 2 2 2 0 4 7 7 73 GREATEST DAILY PRECIPITATION 8.0 15.0 6.0 14.2 0.2 2.0 6.0 2.0 0.0 12.0 6.0 16.4 16.4 DAY 7 2 7 20 1 17 26 6 ** 16 19 17 DAY WITH THUNDER STORM 0 0 0 5 1 2 2 1 1 1 0 0 13 DAYS WITH SNOW OR SLEET 11 8 3 0 0 0 0 0 0 0 0 3 25 DAYS WITH DUST 0 1 3 0 3 3 3 4 3 1 2 0 23 WIND DIRECTION (PREVAILING) 270 270 225 270 225 225 135 225 225 225 225 180 225 PREVAILING WIND SPEED(KNOTS) 9.6 8.4 12.0 8.2 9.6 11.1 11.6 9.6 7.4 10.2 14.4 11.9 10.8 PREVAILING WIND PERCENT 6.9 5.2 16.1 7.1 13.7 12.9 6.9 6.0 6.7 5.6 13.8 10.5 8.5 CALMS PERCENT OF WIND 77.0 71.6 48.0 70.4 61.3 67.5 73.0 66.5 75.8 77.8 60.8 61.3 67.6 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 204 221 237 253 240 214 84 154 213 208 211 202 218 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.7 3.6 1.0 2.2 1.4 0.6 0.8 0.4 0.7 3.7 1.8 1.3 WIND STEADINESES (MEAN %) 30.0 25.9 66.7 41.7 61.1 40.0 21.4 25.8 21.1 33.3 74.0 43.9 40.6 WIND SPEED (MEAN KNOTS) 2.0 2.7 5.4 2.4 3.6 3.5 2.8 3.1 1.9 2.1 5.0 4.1 3.2 FASTEST WIND DIRECTION 120 150 220 270 210 230 90 90 90 270 180 180 180 FASTEST WIND SPEED (KNOTS) 21 29 29 23 31 25 29 23 31 31 39 29 39 DAY 18 1 4 19 28 24 14 9 24 23 7 11 DAYS WITH SKY CLEAR (0-2)/8 4 7 16 6 24 25 28 28 27 19 14 12 210 DAYS WITH P.CLOUDY (3-6)/8 15 12 10 14 7 5 3 3 3 10 12 12 106 DAYS WITH CLOUDY (7-8)/8 12 10 5 10 0 0 0 0 0 2 4 7 50 DAYS WITH VISIBILITY =< 2 KM 11 7 2 1 0 0 0 0 0 1 0 3 25 DURATION OF SUNSHINE HOURS 108.9 142.6 242.6 195.1 358.4 355.7 365.6 338.9 313.6 255.5 199.5 175.8 3052.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.1 823.9 821.7 824.7 824.8 822.6 820.2 821.6 825.6 828.6 827.8 825.2 824.3 MAX. QFE PRESSURE IN HPA 834.7 833.0 830.0 833.2 830.0 828.6 827.2 828.0 831.1 835.0 835.2 832.0 835.2 DAY-HOUR 10- 6 6-18 17- 6 8- 9 17- 6 12- 6 31- 6 21- 6 14- 6 28- 6 6- 6 2- 6 MIN. QFE PRESSURE IN HPA 817.0 812.2 811.3 819.0 819.0 815.3 814.8 815.8 819.2 822.0 819.6 808.5 808.5 DAY-HOUR 28-21 2- 3 4-12 30-15 1- 0 30-15 8-15 2-15 17-12 30-15 28- 9 27- 3 MEAN QNH PRESSURE IN HPA 1018.1 1016.6 1014.0 1017.6 1017.7 1015.1 1012.2 1013.9 1018.6 1022.2 1021.3 1018.1 1017.1 MAX. QNH PRESSURE IN HPA 1029.5 1027.4 1023.9 1027.7 1023.9 1022.2 1020.6 1021.5 1025.2 1029.8 1030.1 1026.3 1030.1 DAY-HOUR 10- 6 6-18 17- 6 8- 9 17- 6 12- 6 31- 6 21- 6 14- 6 28- 6 6- 6 2- 6 MIN. QNH PRESSURE IN HPA 1008.5 1002.8 1001.7 1010.8 1010.8 1006.5 1005.9 1007.0 1011.1 1014.4 1011.6 998.4 998.4 DAY-HOUR 28-21 2- 3 4-12 30-15 1- 0 30-15 8-15 2-15 17-12 30-15 28- 9 27- 3 MEAN QFF PRESSURE IN HPA 1022.5 1020.2 1012.0 1012.3 1007.6 1002.6 997.1 999.2 1007.8 1015.4 1019.1 1019.5 1011.3 MAX. QFF PRESSURE IN HPA 1036.5 1036.6 1023.7 1025.6 1015.0 1010.5 1006.7 1007.8 1016.1 1024.1 1032.5 1039.8 1039.8 DAY-HOUR 10- 6 6-18 17- 6 3- 3 4- 3 1-15 27- 6 21- 6 25- 3 28- 6 15- 6 29- 6 MIN. QFF PRESSURE IN HPA 1007.7 1000.6 998.5 1001.3 999.3 993.8 990.0 990.6 996.3 1006.6 1005.6 996.6 990.0 DAY-HOUR 28-21 2- 3 4-12 30-21 28- 0 30-12 17-15 2-12 17-12 30-21 19-21 27- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.1 823.7 821.6 824.5 824.7 822.9 820.4 821.8 825.6 828.6 827.9 825.1 824.3 MAX. QFE PRESSURE IN HPA 834.0 832.0 829.0 831.2 829.0 827.5 826.0 825.8 830.0 833.7 834.2 831.0 834.2 DAY 10 7 17 9 17 13 31 21 15 28 6 22 MIN. QFE PRESSURE IN HPA 817.0 814.0 813.0 819.8 819.0 818.8 817.8 817.8 821.8 823.0 820.2 809.0 809.0 DAY 29 2 5 25 1 30 16 3 17 31 20 27 MEAN QNH PRESSURE IN HPA 1018.0 1016.5 1013.9 1017.4 1017.6 1015.5 1012.4 1014.2 1018.7 1022.3 1021.4 1018.1 1017.2 MAX. QNH PRESSURE IN HPA 1028.6 1026.3 1022.7 1025.3 1022.7 1020.9 1019.1 1018.9 1023.9 1028.3 1028.9 1025.1 1028.9 DAY 10 7 17 9 17 13 31 21 15 28 6 22 MIN. QNH PRESSURE IN HPA 1008.5 1004.9 1003.7 1011.8 1010.8 1010.6 1009.4 1009.4 1014.2 1015.6 1012.3 999.0 999.0 DAY 29 2 5 25 1 30 16 3 17 31 20 27 MEAN QFF PRESSURE IN HPA 1021.9 1019.4 1011.4 1011.9 1007.6 1002.9 997.3 999.1 1007.3 1014.5 1018.2 1018.5 1010.8 MAX. QFF PRESSURE IN HPA 1034.0 1033.8 1023.1 1023.1 1014.5 1007.5 1003.5 1004.8 1012.5 1021.0 1028.7 1034.9 1034.9 DAY 10 7 17 9 4 4 28 26 30 28 15 30 MIN. QFF PRESSURE IN HPA 1008.3 1001.2 998.6 1003.0 999.3 996.2 992.6 993.2 998.8 1007.3 1007.2 996.6 992.6 DAY 29 2 21 25 28 30 17 3 17 31 11 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.9 823.9 821.9 824.8 825.1 823.5 821.0 822.4 826.2 829.0 828.0 825.1 824.6 MAX. QFE PRESSURE IN HPA 834.6 832.0 829.0 831.0 829.5 828.0 827.0 827.0 830.0 834.0 834.4 831.3 834.6 DAY 10 7 17 9 16 12 31 21 14 28 6 3 MIN. QFE PRESSURE IN HPA 818.0 812.2 814.2 819.2 819.2 818.7 818.0 818.2 821.8 824.2 821.0 808.5 808.5 DAY 29 2 5 30 1 30 8 3 17 31 20 27 MEAN QNH PRESSURE IN HPA 1017.9 1016.7 1014.2 1017.7 1018.1 1016.1 1013.2 1014.9 1019.4 1022.7 1021.5 1018.1 1017.5 MAX. QNH PRESSURE IN HPA 1029.3 1026.3 1022.7 1025.1 1023.3 1021.5 1020.3 1020.3 1023.9 1028.6 1029.1 1025.4 1029.3 DAY 10 7 17 9 16 12 31 21 14 28 6 3 MIN. QNH PRESSURE IN HPA 1009.7 1002.8 1005.1 1011.1 1011.1 1010.5 1009.7 1009.9 1014.2 1017.0 1013.2 998.4 998.4 DAY 29 2 5 30 1 30 8 3 17 31 20 27 MEAN QFF PRESSURE IN HPA 1023.1 1020.8 1012.9 1013.3 1009.1 1004.6 999.0 1001.5 1010.1 1017.4 1020.2 1020.4 1012.7 MAX. QFF PRESSURE IN HPA 1035.7 1036.5 1023.5 1025.6 1015.0 1009.8 1006.3 1007.2 1016.1 1024.0 1031.6 1037.4 1037.4 DAY 10 7 15 3 4 4 27 26 25 28 15 29 MIN. QFF PRESSURE IN HPA 1010.7 1000.6 1000.0 1003.3 1000.6 998.6 993.4 995.9 1001.8 1009.3 1009.5 997.9 993.4 DAY 29 2 21 25 28 30 15 3 17 20 11 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.8 824.9 822.6 825.7 825.6 823.7 821.5 822.9 826.9 829.7 828.9 826.1 825.4 MAX. QFE PRESSURE IN HPA 834.7 832.8 830.0 833.0 830.0 828.6 827.2 828.0 831.1 835.0 835.2 832.0 835.2 DAY 10 6 17 8 17 12 31 21 14 28 6 2 MIN. QFE PRESSURE IN HPA 819.4 813.9 815.2 819.9 820.5 818.4 818.3 818.5 822.8 824.6 821.7 810.0 810.0 DAY 29 2 3 30 1 30 18 3 17 30 28 27 MEAN QNH PRESSURE IN HPA 1019.0 1017.8 1015.1 1018.8 1018.7 1016.4 1013.8 1015.5 1020.2 1023.5 1022.5 1019.2 1018.4 MAX. QNH PRESSURE IN HPA 1029.5 1027.2 1023.9 1027.4 1023.9 1022.2 1020.6 1021.5 1025.2 1029.8 1030.1 1026.3 1030.1 DAY 10 6 17 8 17 12 31 21 14 28 6 2 MIN. QNH PRESSURE IN HPA 1011.3 1004.8 1006.3 1011.9 1012.6 1010.1 1010.0 1010.3 1015.3 1017.5 1014.0 1000.2 1000.2 DAY 29 2 3 30 1 30 18 3 17 30 28 27 MEAN QFF PRESSURE IN HPA 1023.9 1022.0 1013.3 1013.7 1008.4 1003.7 998.7 1000.7 1009.3 1017.0 1021.0 1021.2 1012.7 MAX. QFF PRESSURE IN HPA 1036.5 1036.6 1023.7 1025.3 1014.9 1008.6 1006.7 1007.8 1015.7 1024.1 1032.5 1039.8 1039.8 DAY 10 7 17 9 4 12 27 21 25 28 15 29 MIN. QFF PRESSURE IN HPA 1012.4 1003.6 1001.0 1004.4 1001.8 996.8 993.1 994.5 1001.6 1008.1 1009.9 1000.7 993.1 DAY 29 2 3 30 28 30 15 3 17 20 11 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.3 824.5 822.1 825.3 824.9 822.8 820.3 821.7 825.7 828.6 827.8 825.3 824.5 MAX. QFE PRESSURE IN HPA 834.0 832.2 828.2 833.2 828.7 828.1 826.1 826.0 830.0 834.0 833.6 831.2 834.0 DAY 10 6 17 8 17 12 31 21 15 28 6 3 MIN. QFE PRESSURE IN HPA 819.3 815.2 814.4 820.2 820.1 817.1 817.0 817.7 821.0 823.8 819.6 811.1 811.1 DAY 26 2 4 30 1 30 8 3 17 30 28 26 MEAN QNH PRESSURE IN HPA 1018.4 1017.4 1014.5 1018.3 1017.9 1015.3 1012.4 1014.0 1018.8 1022.2 1021.3 1018.3 1017.4 MAX. QNH PRESSURE IN HPA 1028.6 1026.5 1021.8 1027.7 1022.3 1021.6 1019.3 1019.1 1023.9 1028.6 1028.2 1025.3 1028.6 DAY 10 6 17 8 17 12 31 21 15 28 6 3 MIN. QNH PRESSURE IN HPA 1011.2 1006.3 1005.4 1012.3 1012.1 1008.6 1008.5 1009.3 1013.2 1016.5 1011.6 1001.5 1001.5 DAY 26 2 4 30 1 30 8 3 17 30 28 26 MEAN QFF PRESSURE IN HPA 1022.4 1020.5 1011.9 1012.3 1007.1 1002.2 996.7 998.3 1007.0 1014.5 1018.4 1018.9 1010.9 MAX. QFF PRESSURE IN HPA 1035.5 1034.0 1021.9 1024.5 1013.3 1007.5 1005.2 1004.0 1013.4 1021.8 1029.0 1037.4 1037.4 DAY 10 7 16 8 4 12 27 21 25 28 15 29 MIN. QFF PRESSURE IN HPA 1012.3 1004.8 1001.6 1002.0 1001.6 995.8 990.0 991.8 997.9 1007.0 1008.3 998.6 990.0 DAY 26 2 4 30 1 30 15 2 17 20 19 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 824.4 823.0 820.6 824.0 824.0 821.5 819.0 820.3 824.3 827.4 826.8 824.2 823.3 MAX. QFE PRESSURE IN HPA 832.8 831.0 827.0 831.6 827.0 827.1 824.4 823.9 828.1 832.0 832.2 830.5 832.8 DAY 10 6 16 8 8 12 31 21 14 28 5 21 MIN. QFE PRESSURE IN HPA 817.9 814.3 811.3 819.1 819.8 816.0 815.8 816.0 819.2 822.5 819.9 810.5 810.5 DAY 18 2 4 30 1 30 8 2 17 30 28 26 MEAN QNH PRESSURE IN HPA 1017.2 1015.6 1012.8 1016.8 1016.7 1013.8 1010.8 1012.4 1017.1 1020.8 1020.0 1017.0 1015.9 MAX. QNH PRESSURE IN HPA 1027.2 1025.1 1020.3 1025.8 1020.3 1020.4 1017.2 1016.7 1021.6 1026.3 1026.5 1024.5 1027.2 DAY 10 6 16 8 8 12 31 21 14 28 5 21 MIN. QNH PRESSURE IN HPA 1009.5 1005.3 1001.7 1011.0 1011.8 1007.3 1007.0 1007.3 1011.1 1015.0 1011.9 1000.8 1000.8 DAY 18 2 4 30 1 30 8 2 17 30 28 26 MEAN QFF PRESSURE IN HPA 1020.9 1018.3 1010.2 1011.3 1006.6 1001.2 995.4 997.2 1005.5 1013.1 1016.9 1017.3 1009.5 MAX. QFF PRESSURE IN HPA 1034.0 1031.0 1020.4 1021.0 1012.7 1006.5 1001.6 1002.9 1010.5 1019.8 1025.7 1036.0 1036.0 DAY 10 6 16 8 8 12 27 26 29 16 15 29 MIN. QFF PRESSURE IN HPA 1011.6 1003.4 998.5 1002.5 1002.3 993.8 990.4 990.6 996.3 1006.7 1008.4 997.1 990.4 DAY 26 2 4 30 28 30 17 2 17 20 10 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.8 823.2 821.0 823.8 823.8 821.3 818.6 820.0 824.2 827.5 827.2 824.7 823.3 MAX. QFE PRESSURE IN HPA 832.8 832.0 827.0 831.6 826.8 826.4 824.0 823.0 828.2 832.0 833.2 831.3 833.2 DAY 9 6 16 8 8 12 30 21 14 16 6 21 MIN. QFE PRESSURE IN HPA 819.0 814.0 812.2 819.0 821.0 815.3 814.8 815.8 820.0 822.0 821.8 811.2 811.2 DAY 18 1 4 30 1 30 8 2 17 30 19 26 MEAN QNH PRESSURE IN HPA 1017.8 1015.8 1013.2 1016.6 1016.5 1013.5 1010.3 1012.0 1017.0 1021.0 1020.6 1017.6 1016.0 MAX. QNH PRESSURE IN HPA 1027.2 1026.3 1020.3 1025.8 1020.1 1019.6 1016.8 1015.6 1021.8 1026.3 1027.7 1025.4 1027.7 DAY 9 6 16 8 8 12 30 21 14 16 6 21 MIN. QNH PRESSURE IN HPA 1010.8 1004.9 1002.8 1010.8 1013.2 1006.5 1005.9 1007.0 1012.0 1014.4 1014.2 1001.6 1001.6 DAY 18 1 4 30 1 30 8 2 17 30 19 26 MEAN QFF PRESSURE IN HPA 1022.8 1019.7 1011.9 1012.1 1007.5 1002.0 995.9 998.7 1007.7 1015.7 1019.4 1019.9 1011.1 MAX. QFF PRESSURE IN HPA 1034.2 1034.8 1020.8 1024.1 1013.0 1010.5 1001.6 1004.2 1013.2 1022.0 1030.6 1037.7 1037.7 DAY 10 6 7 8 4 1 27 26 25 28 15 29 MIN. QFF PRESSURE IN HPA 1012.9 1004.5 998.9 1003.6 1002.5 994.9 990.0 991.9 1000.2 1008.3 1009.4 998.8 990.0 DAY 28 1 4 30 27 30 17 2 17 20 19 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 825.4 824.1 821.8 824.7 824.8 822.3 820.1 821.6 825.6 828.8 828.1 825.5 824.4 MAX. QFE PRESSURE IN HPA 833.6 833.0 828.0 832.0 828.0 827.0 825.0 824.8 830.0 833.3 835.0 832.0 835.0 DAY 9 6 16 8 16 12 30 21 14 16 5 21 MIN. QFE PRESSURE IN HPA 818.8 816.0 813.0 819.9 821.0 816.5 816.6 817.0 822.0 822.0 821.0 811.6 811.6 DAY 28 1 4 30 1 30 17 2 3 30 19 26 MEAN QNH PRESSURE IN HPA 1018.5 1016.9 1014.2 1017.6 1017.7 1014.8 1012.1 1013.9 1018.7 1022.4 1021.6 1018.6 1017.3 MAX. QNH PRESSURE IN HPA 1028.2 1027.4 1021.5 1026.3 1021.5 1020.3 1018.0 1017.7 1023.9 1027.8 1029.8 1026.3 1029.8 DAY 9 6 16 8 16 12 30 21 14 16 5 21 MIN. QNH PRESSURE IN HPA 1010.6 1007.3 1003.7 1011.9 1013.2 1007.9 1008.0 1008.5 1014.4 1014.4 1013.2 1002.1 1002.1 DAY 28 1 4 30 1 30 17 2 3 30 19 26 MEAN QFF PRESSURE IN HPA 1023.2 1021.0 1012.5 1012.4 1007.5 1002.3 997.1 999.5 1007.9 1016.1 1020.1 1020.7 1011.7 MAX. QFF PRESSURE IN HPA 1034.6 1036.6 1021.3 1025.1 1013.5 1007.7 1005.5 1005.4 1013.2 1023.6 1030.7 1037.9 1037.9 DAY 10 6 14 8 4 12 27 5 25 23 15 29 MIN. QFF PRESSURE IN HPA 1010.8 1005.6 1000.7 1002.6 1000.9 995.2 991.8 992.9 1001.6 1007.4 1008.6 999.4 991.8 DAY 28 1 4 30 27 30 16 2 16 30 19 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 825.3 823.9 822.0 824.8 825.2 822.9 820.6 822.1 825.9 828.9 828.0 825.3 824.6 MAX. QFE PRESSURE IN HPA 833.6 833.0 829.0 831.9 828.8 828.0 825.8 825.0 830.0 834.2 834.8 832.0 834.8 DAY 9 6 16 8 16 12 30 20 14 16 5 21 MIN. QFE PRESSURE IN HPA 817.0 814.5 812.0 819.6 822.1 817.2 817.8 818.0 822.3 823.0 820.2 810.8 810.8 DAY 28 16 4 30 1 30 16 2 17 30 19 26 MEAN QNH PRESSURE IN HPA 1018.4 1016.7 1014.4 1017.7 1018.2 1015.4 1012.8 1014.5 1019.1 1022.6 1021.6 1018.4 1017.5 MAX. QNH PRESSURE IN HPA 1028.2 1027.4 1022.7 1026.1 1022.5 1021.5 1018.9 1018.0 1023.9 1028.9 1029.6 1026.3 1029.6 DAY 9 6 16 8 16 12 30 20 14 16 5 21 MIN. QNH PRESSURE IN HPA 1008.5 1005.5 1002.5 1011.6 1014.5 1008.7 1009.4 1009.7 1014.8 1015.6 1012.3 1001.1 1001.1 DAY 28 16 4 30 1 30 16 2 17 30 19 26 MEAN QFF PRESSURE IN HPA 1022.3 1019.7 1012.0 1011.6 1007.5 1002.5 997.2 999.1 1007.5 1015.0 1018.7 1019.2 1011.0 MAX. QFF PRESSURE IN HPA 1033.6 1035.6 1022.3 1025.3 1012.9 1008.1 1005.3 1005.3 1012.7 1021.8 1029.6 1036.4 1036.4 DAY 9 6 16 8 4 12 27 25 25 16 15 29 MIN. QFF PRESSURE IN HPA 1007.7 1004.7 998.6 1001.3 999.6 995.6 991.4 992.8 1000.3 1006.6 1005.6 999.0 991.4 DAY 28 1 4 30 27 30 14 11 16 30 19 26 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -7.7 -11.8 3.2 12.2 16.2 21.8 25.3 24.2 18.4 13.4 7.0 2.0 10.3 MINIMUN AIR TEMPERATURE (C) -13.0 -18.5 -1.0 3.8 6.2 9.5 12.8 12.1 6.7 3.7 1.6 -2.8 1.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 30 28 5 0 0 0 0 0 0 0 1 15 79 DAYS WITH FREEZING MIN.<= 0 31 28 21 4 0 0 0 0 0 3 11 25 123 TEMPERATURE RECORDS LOWEST(C) -21.0 -29.6 -9.0 -1.8 0.2 6.4 9.0 7.6 2.0 -1.6 -5.4 -6.0 -29.6 DAY 5 7 1 3 1 11 9 29 30 23 22 7 MAXIMUM AIR TEMPERATURE (C) -1.3 -5.0 8.3 20.2 24.2 31.4 35.1 34.5 28.9 23.0 13.3 8.6 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 22 31 31 11 0 0 0 97 DAYS WITH MAXIMUM TEMP. <= 0 21 21 0 0 0 0 0 0 0 0 0 0 42 TEMPERATURE RECORDS HIGHEST(C) 6.0 7.4 17.0 25.0 31.0 37.0 38.2 36.2 36.0 28.2 18.4 14.0 38.2 DAY 20 28 25 15 25 29 10 13 3 6 28 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 13.5 9.3 16.4 18.0 21.9 22.3 22.4 22.2 19.3 11.7 11.4 16.6 MEAN DAILY TEMP. (MDT) (C) -7.1 -11.7 3.6 12.0 15.2 20.4 23.9 23.3 17.8 13.4 7.5 2.9 10.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 15.7 91.4 71.4 13.7 0.0 0.0 0.0 192.2 HEATING DEG. DAYS(BASE 18 0C) 778.9 832.6 446.2 180.0 93.6 2.1 0.0 0.0 50.4 143.8 315.7 468.0 3311.3 DEWPOINT (MEAN C) -10.5 -14.5 -1.2 -0.5 2.1 4.6 7.6 7.3 2.7 -1.5 -1.1 -3.7 -0.7 MIXING RATIO (G/KG) 2.23 1.75 4.35 4.62 5.55 6.73 8.25 8.05 5.86 4.31 4.49 3.64 4.99 VAPOUR PRESSURE (HPA) 2.94 2.31 5.71 6.10 7.30 8.80 10.76 10.51 7.69 5.71 5.93 4.80 6.55 SATURATION DEF. (HPA) 0.75 0.61 2.28 9.01 12.52 19.55 24.05 22.38 16.12 11.07 4.50 2.53 10.45 RELATIVE HUMIDITY (MEAN %) 83 82 77 47 43 36 34 36 38 41 62 70 54 RELATIVE HUMIDITY (MAX. %) 94 93 94 79 75 57 53 57 61 65 85 89 75 RELATIVE HUMIDITY (MIN. %) 64 63 55 24 24 20 23 23 23 22 38 44 35 RELATIVE HUMIDITY (MEAN% 03UTC) 87 85 89 75 72 56 53 56 60 62 79 84 72 RELATIVE HUMIDITY (MEAN% 09UTC) 73 79 64 29 30 26 27 28 28 28 47 56 43 RELATIVE HUMIDITY (MEAN% 15UTC) 81 77 68 32 26 24 25 26 26 29 51 60 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.2 24.3 89.9 7.7 12.0 0.0 0.0 0.0 0.0 7.3 27.4 53.0 261.8 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 5 3 1 7 0 1 0 0 0 0 0 3 4 19 DAYS WITH PRECIPITATION >= 1 12 10 15 3 5 0 0 0 0 3 5 8 61 DAYS WITH PRECIPITATION 15 13 19 6 5 0 0 0 0 4 7 9 78 GREATEST DAILY PRECIPITATION 8.4 6.0 20.0 3.0 5.0 0.0 0.0 0.0 0.0 4.0 9.1 24.0 24.0 DAY 11 19 18 13 7 ** ** ** ** 21 7 1 DAY WITH THUNDER STORM 0 0 3 2 3 0 0 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 15 12 3 0 0 0 0 0 0 0 0 3 33 DAYS WITH DUST 0 0 1 2 4 2 2 1 1 5 2 0 20 WIND DIRECTION (PREVAILING) 270 315 225 180 270 225 135 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.7 8.8 16.0 10.0 12.5 10.2 11.0 8.6 8.8 8.8 14.6 11.3 11.3 PREVAILING WIND PERCENT 5.6 4.0 7.7 7.9 9.7 9.6 10.9 6.9 6.7 10.5 14.2 3.6 7.0 CALMS PERCENT OF WIND 73.8 87.5 65.3 56.3 64.9 71.7 64.1 67.3 80.8 69.0 66.3 81.9 70.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 149 290 228 209 257 252 113 137 269 210 228 220 219 VECTOR WIND MAGNITUDE(KNOTS) 0.3 0.4 1.4 1.6 1.8 1.6 2.2 0.5 0.6 1.5 2.3 0.4 0.8 WIND STEADINESES (MEAN %) 11.1 33.3 33.3 32.7 47.4 64.0 57.9 17.2 33.3 48.4 56.1 25.0 26.7 WIND SPEED (MEAN KNOTS) 2.7 1.2 4.2 4.9 3.8 2.5 3.8 2.9 1.8 3.1 4.1 1.6 3.0 FASTEST WIND DIRECTION 120 240 260 240 240 240 90 120 280 260 210 180 260 FASTEST WIND SPEED (KNOTS) 31 33 43 39 33 27 27 25 31 23 29 29 43 DAY 22 23 31 15 18 10 27 12 27 1 24 3 DAYS WITH SKY CLEAR (0-2)/8 13 13 6 10 20 30 31 23 29 23 15 15 228 DAYS WITH P.CLOUDY (3-6)/8 12 6 11 16 10 0 0 8 1 8 7 10 89 DAYS WITH CLOUDY (7-8)/8 6 9 14 4 1 0 0 0 0 0 8 6 48 DAYS WITH VISIBILITY =< 2 KM 7 20 15 1 0 0 0 0 0 2 3 5 53 DURATION OF SUNSHINE HOURS 160.7 134.7 142.6 223.7 334.9 368.5 370.3 322.7 324.4 250.3 198.0 162.5 2993.3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.2 826.9 823.0 826.9 826.2 823.0 822.8 822.8 825.3 828.8 828.0 825.5 825.3 MAX. QFE PRESSURE IN HPA 830.2 834.0 829.7 831.0 830.0 827.3 827.0 827.2 833.3 835.0 832.2 831.1 835.0 DAY-HOUR 30-18 25- 6 7- 6 2- 6 3-21 26- 6 9- 3 19- 6 24- 6 27- 6 28-18 18-18 MIN. QFE PRESSURE IN HPA 816.0 817.0 811.0 822.1 821.4 817.0 817.0 815.0 819.0 822.9 822.7 817.2 811.0 DAY-HOUR 11-21 14- 0 29-12 29-12 31-15 10-12 5-15 1-18 13-12 30-12 15-15 4-21 MEAN QNH PRESSURE IN HPA 1017.0 1020.1 1015.5 1020.2 1019.4 1015.6 1015.3 1015.3 1018.3 1022.4 1021.6 1018.5 1018.3 MAX. QNH PRESSURE IN HPA 1024.1 1028.6 1023.5 1025.1 1023.9 1020.7 1020.3 1020.6 1027.8 1029.8 1026.5 1025.2 1029.8 DAY-HOUR 30-18 25- 6 7- 6 2- 6 3-21 26- 6 9- 3 19- 6 24- 6 27- 6 28-18 18-18 MIN. QNH PRESSURE IN HPA 1007.3 1008.5 1001.4 1014.5 1013.7 1008.5 1008.5 1006.1 1010.8 1015.5 1015.2 1008.7 1001.4 DAY-HOUR 11-21 14- 0 29-12 29-12 31-15 10-12 5-15 1-18 13-12 30-12 15-15 4-21 MEAN QFF PRESSURE IN HPA 1025.9 1033.0 1015.5 1013.8 1010.0 1002.2 999.4 1000.1 1007.3 1015.2 1018.9 1019.6 1013.4 MAX. QFF PRESSURE IN HPA 1041.4 1049.4 1027.2 1023.4 1018.0 1008.6 1007.1 1007.9 1020.2 1024.7 1027.2 1028.6 1049.4 DAY-HOUR 31- 6 5-18 1- 6 2- 3 1- 3 13- 0 9- 3 19- 6 24- 3 27- 3 22- 6 18-18 MIN. QFF PRESSURE IN HPA 1011.1 1014.2 999.6 1004.5 1001.2 994.6 992.1 991.2 999.3 1007.4 1010.6 1008.2 991.2 DAY-HOUR 2-21 22-21 29-12 29-12 31-12 30-18 5-12 1-18 7-12 1-12 16-12 4-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 824.2 826.4 822.8 826.9 826.4 823.3 823.1 823.0 825.7 828.9 828.1 825.6 825.4 MAX. QFE PRESSURE IN HPA 829.4 832.8 828.3 830.8 828.5 826.5 826.0 826.0 832.0 833.8 831.9 830.8 833.8 DAY 31 8 7 10 4 4 9 19 24 27 29 19 MIN. QFE PRESSURE IN HPA 817.0 817.0 812.6 823.0 823.0 818.5 819.5 817.4 821.7 824.0 823.9 818.0 812.6 DAY 12 14 29 14 7 10 17 2 14 31 20 5 MEAN QNH PRESSURE IN HPA 1017.0 1019.6 1015.4 1020.2 1019.6 1016.0 1015.7 1015.6 1018.8 1022.6 1021.7 1018.6 1018.4 MAX. QNH PRESSURE IN HPA 1023.2 1027.2 1021.9 1024.8 1022.1 1019.7 1019.1 1019.1 1026.3 1028.4 1026.1 1024.8 1028.4 DAY 31 8 7 10 4 4 9 19 24 27 29 19 MIN. QNH PRESSURE IN HPA 1008.5 1008.5 1003.3 1015.6 1015.6 1010.3 1011.4 1008.9 1014.0 1016.8 1016.7 1009.7 1003.3 DAY 12 14 29 14 7 10 17 2 14 31 20 5 MEAN QFF PRESSURE IN HPA 1024.6 1032.0 1014.9 1013.6 1010.4 1002.7 999.9 1000.2 1007.3 1014.7 1018.2 1018.8 1013.1 MAX. QFF PRESSURE IN HPA 1037.7 1046.0 1024.3 1022.5 1016.4 1008.6 1005.0 1004.8 1018.2 1022.6 1023.2 1026.7 1046.0 DAY 31 8 1 2 1 13 9 19 24 27 22 19 MIN. QFF PRESSURE IN HPA 1011.5 1014.8 1000.0 1006.0 1002.8 996.7 995.2 993.3 1001.5 1008.8 1011.6 1008.9 993.3 DAY 3 23 29 14 31 30 17 2 6 2 20 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.1 826.5 822.9 827.2 826.8 823.7 823.6 823.4 825.9 829.1 828.2 825.6 825.6 MAX. QFE PRESSURE IN HPA 829.0 832.6 829.0 830.8 828.8 827.0 827.0 826.5 832.0 834.0 831.8 830.0 834.0 DAY 31 8 8 10 14 26 9 19 24 27 29 18 MIN. QFE PRESSURE IN HPA 817.0 817.8 812.2 824.0 823.0 819.4 820.0 818.0 821.2 824.4 824.2 821.1 812.2 DAY 17 14 29 14 31 10 17 2 13 31 20 5 MEAN QNH PRESSURE IN HPA 1016.8 1019.8 1015.5 1020.6 1020.0 1016.4 1016.2 1016.1 1019.0 1022.8 1021.7 1018.7 1018.6 MAX. QNH PRESSURE IN HPA 1022.7 1027.0 1022.7 1024.8 1022.5 1020.3 1020.3 1019.7 1026.3 1028.6 1026.0 1023.9 1028.6 DAY 31 8 8 10 14 26 9 19 24 27 29 18 MIN. QNH PRESSURE IN HPA 1008.5 1009.4 1002.8 1016.8 1015.6 1011.3 1012.0 1009.7 1013.5 1017.2 1017.0 1013.3 1002.8 DAY 17 14 29 14 31 10 17 2 13 31 20 5 MEAN QFF PRESSURE IN HPA 1026.7 1033.6 1016.1 1015.4 1011.5 1003.8 1001.7 1002.5 1009.7 1017.1 1020.0 1020.6 1014.9 MAX. QFF PRESSURE IN HPA 1038.3 1048.1 1026.5 1023.4 1018.0 1008.4 1007.1 1007.5 1020.2 1024.7 1025.8 1028.2 1048.1 DAY 31 8 1 2 1 2 9 19 24 27 22 18 MIN. QFF PRESSURE IN HPA 1014.8 1016.2 1000.6 1008.6 1003.7 998.7 996.9 996.7 1004.0 1009.2 1013.2 1014.0 996.7 DAY 12 14 29 29 31 30 14 2 6 2 20 5 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.1 827.8 823.8 827.9 827.3 824.1 824.0 824.0 826.6 830.0 829.1 826.4 826.3 MAX. QFE PRESSURE IN HPA 829.6 834.0 829.7 831.0 829.1 827.3 827.0 827.2 833.3 835.0 832.0 830.8 835.0 DAY 22 25 7 2 21 26 9 19 24 27 29 18 MIN. QFE PRESSURE IN HPA 817.4 819.8 813.2 824.6 823.2 819.4 820.0 818.8 822.0 825.8 825.2 821.9 813.2 DAY 17 13 29 29 7 10 5 1 13 2 16 4 MEAN QNH PRESSURE IN HPA 1018.1 1021.2 1016.5 1021.4 1020.6 1016.9 1016.8 1016.8 1019.8 1023.9 1022.9 1019.6 1019.5 MAX. QNH PRESSURE IN HPA 1023.4 1028.6 1023.5 1025.1 1022.8 1020.7 1020.3 1020.6 1027.8 1029.8 1026.3 1024.8 1029.8 DAY 22 25 7 2 21 26 9 19 24 27 29 18 MIN. QNH PRESSURE IN HPA 1008.9 1011.8 1004.0 1017.5 1015.8 1011.3 1012.0 1010.6 1014.4 1018.9 1018.2 1014.3 1004.0 DAY 17 13 29 29 7 10 5 1 13 2 16 4 MEAN QFF PRESSURE IN HPA 1027.7 1034.9 1017.0 1014.9 1010.7 1003.2 1000.5 1001.5 1008.5 1016.8 1020.8 1021.3 1014.8 MAX. QFF PRESSURE IN HPA 1041.4 1049.1 1027.2 1022.9 1017.7 1007.9 1004.7 1007.9 1020.1 1024.1 1027.2 1028.6 1049.1 DAY 31 7 1 2 1 13 9 19 24 26 22 18 MIN. QFF PRESSURE IN HPA 1016.7 1017.9 1003.2 1008.4 1003.0 997.3 995.3 994.9 1002.8 1009.0 1015.0 1014.5 994.9 DAY 2 23 29 29 31 30 5 2 12 2 30 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 824.6 827.2 823.3 827.0 826.6 823.4 823.1 822.9 825.4 828.9 828.2 825.6 825.5 MAX. QFE PRESSURE IN HPA 829.0 833.5 829.5 831.0 829.0 827.0 826.0 826.5 832.0 832.3 831.0 830.5 833.5 DAY 22 25 7 9 4 3 9 26 24 4 3 18 MIN. QFE PRESSURE IN HPA 818.8 817.7 812.2 823.2 822.7 818.8 819.0 817.5 821.0 824.6 824.0 820.5 812.2 DAY 17 13 29 29 31 10 5 2 13 30 16 4 MEAN QNH PRESSURE IN HPA 1017.4 1020.6 1016.0 1020.4 1019.8 1016.0 1015.7 1015.5 1018.4 1022.6 1021.8 1018.7 1018.6 MAX. QNH PRESSURE IN HPA 1022.7 1028.0 1023.3 1025.1 1022.7 1020.3 1019.1 1019.7 1026.3 1026.6 1025.1 1024.5 1028.0 DAY 22 25 7 9 4 3 9 26 24 4 3 18 MIN. QNH PRESSURE IN HPA 1010.6 1009.3 1002.8 1015.8 1015.2 1010.6 1010.8 1009.1 1013.2 1017.5 1016.8 1012.6 1002.8 DAY 17 13 29 29 31 10 5 2 13 30 16 4 MEAN QFF PRESSURE IN HPA 1025.6 1032.9 1015.6 1013.1 1010.1 1002.2 998.8 999.0 1006.3 1014.2 1018.5 1019.0 1012.9 MAX. QFF PRESSURE IN HPA 1039.0 1047.1 1026.1 1021.3 1016.5 1008.5 1004.4 1004.7 1017.5 1021.3 1023.6 1026.5 1047.1 DAY 31 6 7 2 1 3 9 19 22 26 22 18 MIN. QFF PRESSURE IN HPA 1013.0 1015.7 1000.8 1006.7 1002.3 995.1 993.8 991.8 999.4 1008.4 1011.9 1013.0 991.8 DAY 2 13 29 15 31 30 5 1 5 1 16 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.4 826.3 822.1 825.8 825.4 822.2 821.9 821.6 824.0 827.5 827.1 824.6 824.3 MAX. QFE PRESSURE IN HPA 828.0 832.6 828.5 830.8 827.3 826.1 824.9 825.0 829.8 831.0 830.0 829.8 832.6 DAY 30 25 7 9 14 3 9 26 24 4 9 18 MIN. QFE PRESSURE IN HPA 818.0 817.2 811.0 822.1 821.5 817.0 817.5 816.2 819.0 822.9 822.9 819.2 811.0 DAY 2 13 29 29 31 10 5 1 13 30 15 4 MEAN QNH PRESSURE IN HPA 1016.1 1019.5 1014.5 1019.0 1018.4 1014.6 1014.2 1014.0 1016.8 1020.9 1020.4 1017.5 1017.1 MAX. QNH PRESSURE IN HPA 1021.5 1027.0 1022.1 1024.8 1020.7 1019.3 1017.8 1018.0 1023.7 1025.1 1023.9 1023.7 1027.0 DAY 30 25 7 9 14 3 9 26 24 4 9 18 MIN. QNH PRESSURE IN HPA 1009.7 1008.7 1001.4 1014.5 1013.8 1008.5 1009.1 1007.5 1010.8 1015.5 1015.5 1011.1 1001.4 DAY 2 13 29 29 31 10 5 1 13 30 15 4 MEAN QFF PRESSURE IN HPA 1023.8 1031.4 1014.0 1012.2 1009.1 1001.0 998.0 998.2 1005.1 1012.9 1016.9 1017.6 1011.7 MAX. QFF PRESSURE IN HPA 1035.1 1044.3 1024.1 1019.3 1014.0 1007.5 1003.8 1002.8 1015.2 1018.7 1022.2 1025.2 1044.3 DAY 31 8 7 9 1 3 8 31 22 26 22 18 MIN. QFF PRESSURE IN HPA 1011.7 1014.6 999.6 1004.5 1001.2 995.0 992.1 992.0 999.3 1007.4 1010.6 1010.4 992.0 DAY 2 13 29 29 31 29 5 1 7 1 16 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 823.7 826.5 822.3 825.9 824.9 821.8 821.3 821.2 823.9 827.7 827.3 824.9 824.3 MAX. QFE PRESSURE IN HPA 829.0 832.3 828.0 830.0 827.2 825.3 824.8 824.4 829.3 831.8 831.0 830.5 832.3 DAY 30 8 7 9 14 3 8 26 24 26 28 18 MIN. QFE PRESSURE IN HPA 817.7 817.4 811.5 822.2 821.4 817.8 817.0 815.2 819.6 823.3 822.7 818.0 811.5 DAY 11 13 29 23 31 9 5 1 13 30 15 4 MEAN QNH PRESSURE IN HPA 1016.5 1019.8 1014.8 1019.1 1017.8 1014.2 1013.6 1013.4 1016.7 1021.2 1020.7 1017.9 1017.1 MAX. QNH PRESSURE IN HPA 1022.7 1026.6 1021.5 1023.9 1020.6 1018.3 1017.7 1017.2 1023.1 1026.0 1025.1 1024.5 1026.6 DAY 30 8 7 9 14 3 8 26 24 26 28 18 MIN. QNH PRESSURE IN HPA 1009.3 1008.9 1001.9 1014.6 1013.7 1009.4 1008.5 1006.3 1011.6 1015.9 1015.2 1009.7 1001.9 DAY 11 13 29 23 31 9 5 1 13 30 15 4 MEAN QFF PRESSURE IN HPA 1026.4 1033.2 1015.2 1013.7 1009.2 1001.2 998.7 999.5 1007.2 1015.5 1018.9 1019.7 1013.2 MAX. QFF PRESSURE IN HPA 1035.9 1047.3 1024.4 1019.3 1014.8 1007.1 1003.4 1005.0 1016.3 1022.3 1024.5 1027.6 1047.3 DAY 31 7 7 2 1 3 8 31 22 26 22 18 MIN. QFF PRESSURE IN HPA 1014.0 1015.2 1000.9 1008.6 1002.7 995.9 994.3 992.2 1001.4 1009.7 1012.3 1009.1 992.2 DAY 2 13 29 23 31 29 5 1 6 2 15 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 824.5 827.1 823.3 827.1 826.0 822.6 822.4 822.7 825.3 828.9 828.2 825.8 825.3 MAX. QFE PRESSURE IN HPA 830.2 832.5 828.5 830.6 829.0 826.2 825.4 827.0 831.0 833.0 832.2 831.1 833.0 DAY 30 5 7 9 3 3 22 18 23 26 28 18 MIN. QFE PRESSURE IN HPA 816.8 818.2 815.0 823.0 823.0 818.0 818.0 815.0 821.0 824.8 824.4 818.1 815.0 DAY 11 13 15 23 6 9 16 1 13 1 15 4 MEAN QNH PRESSURE IN HPA 1017.3 1020.5 1016.0 1020.4 1019.2 1015.1 1014.9 1015.2 1018.3 1022.6 1021.8 1018.9 1018.3 MAX. QNH PRESSURE IN HPA 1024.1 1026.8 1022.1 1024.6 1022.7 1019.4 1018.4 1020.3 1025.1 1027.4 1026.5 1025.2 1027.4 DAY 30 5 7 9 3 3 22 18 23 26 28 18 MIN. QNH PRESSURE IN HPA 1008.2 1009.9 1006.1 1015.6 1015.6 1009.7 1009.7 1006.1 1013.2 1017.7 1017.2 1009.8 1006.1 DAY 11 13 15 23 6 9 16 1 13 1 15 4 MEAN QFF PRESSURE IN HPA 1027.1 1033.8 1016.4 1013.9 1009.3 1001.5 998.9 1000.2 1007.2 1015.6 1019.6 1020.7 1013.7 MAX. QFF PRESSURE IN HPA 1038.8 1049.4 1025.7 1021.1 1015.6 1007.4 1002.9 1007.7 1018.0 1024.2 1025.6 1028.6 1049.4 DAY 30 5 7 1 1 3 8 18 22 26 22 18 MIN. QFF PRESSURE IN HPA 1012.3 1015.5 1004.0 1008.1 1002.8 994.6 993.9 991.2 999.5 1008.7 1014.0 1009.0 991.2 DAY 2 22 28 23 30 30 16 1 6 1 30 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 824.4 827.0 823.2 827.3 826.5 823.3 823.1 823.4 825.7 829.1 828.2 825.7 825.6 MAX. QFE PRESSURE IN HPA 830.0 832.6 828.8 830.6 830.0 826.8 826.0 827.0 832.0 833.6 832.2 831.1 833.6 DAY 30 7 6 9 3 3 8 18 23 26 28 18 MIN. QFE PRESSURE IN HPA 816.0 817.5 814.0 824.0 823.4 818.2 819.2 817.4 821.7 824.2 824.1 817.2 814.0 DAY 11 13 15 23 31 9 31 1 13 30 19 4 MEAN QNH PRESSURE IN HPA 1017.3 1020.4 1015.8 1020.7 1019.7 1015.9 1015.7 1016.0 1018.8 1022.9 1021.7 1018.8 1018.6 MAX. QNH PRESSURE IN HPA 1023.9 1027.0 1022.5 1024.6 1023.9 1020.1 1019.1 1020.3 1026.3 1028.2 1026.5 1025.2 1028.2 DAY 30 7 6 9 3 3 8 18 23 26 28 18 MIN. QNH PRESSURE IN HPA 1007.3 1009.1 1004.9 1016.8 1016.1 1009.9 1011.1 1008.9 1014.0 1017.0 1016.9 1008.7 1004.9 DAY 11 13 15 23 31 9 31 1 13 30 19 4 MEAN QFF PRESSURE IN HPA 1025.6 1032.5 1015.4 1013.4 1009.9 1002.3 999.2 1000.0 1007.0 1014.7 1018.4 1019.3 1013.1 MAX. QFF PRESSURE IN HPA 1038.4 1048.5 1025.0 1021.9 1015.4 1008.1 1005.4 1006.4 1017.5 1023.4 1023.7 1027.4 1048.5 DAY 30 5 6 1 1 12 8 18 23 26 22 18 MIN. QFF PRESSURE IN HPA 1011.1 1014.2 1002.1 1007.0 1003.4 996.3 994.2 992.5 1001.2 1008.3 1011.8 1008.2 992.5 DAY 2 22 27 13 30 30 31 1 4 1 19 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.5 -3.9 4.1 10.3 16.6 21.7 25.0 24.2 19.4 12.4 8.0 1.0 11.0 MINIMUN AIR TEMPERATURE (C) -11.1 -8.6 -1.5 3.0 6.4 10.0 14.9 12.6 7.1 3.9 0.4 -5.4 2.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 25 23 9 0 0 0 0 0 0 0 3 18 78 DAYS WITH FREEZING MIN.<= 0 29 28 20 9 0 0 0 0 0 3 16 26 131 TEMPERATURE RECORDS LOWEST(C) -24.0 -19.8 -9.4 -2.0 2.0 4.8 11.0 8.4 4.0 -1.2 -4.6 -23.8 -24.0 DAY 26 1 21 6 9 6 6 10 29 19 14 28 MAXIMUM AIR TEMPERATURE (C) -1.1 1.4 10.9 17.5 25.2 31.2 33.7 34.7 31.0 21.2 16.8 8.5 19.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 24 27 31 24 0 0 0 107 DAYS WITH MAXIMUM TEMP. <= 0 19 11 0 0 0 0 0 0 0 0 0 6 36 TEMPERATURE RECORDS HIGHEST(C) 6.4 5.8 17.0 25.6 30.6 35.0 37.0 38.0 33.4 25.6 22.0 19.2 38.0 DAY 6 19 24 26 22 29 16 14 9 7 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 10.0 12.4 14.5 18.8 21.2 18.8 22.1 23.9 17.3 16.4 13.9 16.6 MEAN DAILY TEMP. (MDT) (C) -6.1 -3.6 4.7 10.2 15.8 20.6 24.3 23.7 19.0 12.6 8.6 1.5 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 15.7 107.6 83.5 1.2 0.0 0.0 0.0 208.0 HEATING DEG. DAYS(BASE 18 0C) 747.6 604.4 412.8 233.5 72.4 0.5 0.0 0.0 5.3 168.6 282.3 510.4 3037.8 DEWPOINT (MEAN C) -9.3 -6.3 -2.9 -2.0 0.1 3.6 6.8 4.3 1.0 1.3 -1.9 -7.2 -1.0 MIXING RATIO (G/KG) 2.55 3.03 3.90 4.16 4.82 6.30 7.87 6.59 5.14 5.22 4.11 2.92 4.72 VAPOUR PRESSURE (HPA) 3.36 3.98 5.15 5.46 6.33 8.24 10.26 8.62 6.76 6.89 5.43 3.86 6.20 SATURATION DEF. (HPA) 0.85 0.79 3.60 8.04 14.10 19.77 23.52 24.32 18.50 8.61 6.22 3.89 11.02 RELATIVE HUMIDITY (MEAN %) 82 85 65 48 38 34 35 30 32 51 54 59 51 RELATIVE HUMIDITY (MAX. %) 92 94 89 76 67 56 59 49 55 77 81 79 73 RELATIVE HUMIDITY (MIN. %) 65 68 40 26 19 17 18 17 18 29 29 38 32 RELATIVE HUMIDITY (MEAN% 03UTC) 88 91 84 70 64 53 56 49 53 73 78 72 69 RELATIVE HUMIDITY (MEAN% 09UTC) 73 76 49 34 26 24 26 23 22 37 36 48 40 RELATIVE HUMIDITY (MEAN% 15UTC) 78 81 53 34 23 22 24 20 21 35 39 50 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 52.8 47.9 44.1 29.2 13.0 0.0 5.0 0.0 0.0 20.6 10.3 15.4 238.3 DAYS WITH PRECIPITATION >=10 1 0 1 1 1 0 0 0 0 1 0 1 6 DAYS WITH PRECIPITATION >= 5 3 4 3 1 1 0 1 0 0 1 1 1 16 DAYS WITH PRECIPITATION >= 1 10 8 8 4 2 0 1 0 0 4 2 3 42 DAYS WITH PRECIPITATION 15 10 12 6 2 0 1 0 0 4 2 4 56 GREATEST DAILY PRECIPITATION 20.0 9.4 10.8 22.5 11.0 0.0 5.0 0.0 0.0 14.3 8.0 12.0 22.5 DAY 8 10 14 2 12 ** 5 ** ** 28 12 25 DAY WITH THUNDER STORM 0 1 1 0 0 0 0 0 0 1 1 0 4 DAYS WITH SNOW OR SLEET 14 10 3 0 0 0 0 0 0 0 0 3 30 DAYS WITH DUST 0 1 1 6 8 8 8 8 0 1 0 1 42 WIND DIRECTION (PREVAILING) 225 90 225 225 225 225 90 225 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.1 7.7 11.6 17.7 13.7 11.7 15.7 9.2 7.1 8.8 11.4 10.6 11.5 PREVAILING WIND PERCENT 3.2 3.1 12.1 14.6 14.5 14.6 9.3 11.7 7.9 10.5 7.9 6.9 9.1 CALMS PERCENT OF WIND 85.5 84.8 60.1 54.6 60.1 68.8 62.5 66.5 76.3 62.1 76.3 72.6 69.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 199 29 227 239 222 237 95 224 237 230 213 225 226 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.1 1.0 3.7 2.9 2.1 1.1 0.9 0.4 1.4 1.1 1.1 1.2 WIND STEADINESES (MEAN %) 30.8 7.7 23.3 56.9 59.2 70.0 28.9 29.0 25.0 45.2 52.4 44.0 38.7 WIND SPEED (MEAN KNOTS) 1.3 1.3 4.3 6.5 4.9 3.0 3.8 3.1 1.6 3.1 2.1 2.5 3.1 FASTEST WIND DIRECTION 260 150 210 210 240 240 90 60 120 180 240 210 210 FASTEST WIND SPEED (KNOTS) 21 25 31 49 29 29 29 29 16 23 19 29 49 DAY 10 19 7 13 4 5 25 1 17 25 8 4 DAYS WITH SKY CLEAR (0-2)/8 9 12 10 13 22 30 21 29 30 20 20 13 229 DAYS WITH P.CLOUDY (3-6)/8 12 4 15 11 8 0 10 2 0 8 9 12 91 DAYS WITH CLOUDY (7-8)/8 10 12 6 6 1 0 0 0 0 3 1 6 45 DAYS WITH VISIBILITY =< 2 KM 9 9 1 2 0 0 0 0 0 1 0 2 24 DURATION OF SUNSHINE HOURS 113.2 136.5 204.8 248.4 329.8 376.0 312.3 348.0 326.6 ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.3 822.7 826.1 823.4 824.4 822.7 821.6 822.5 824.6 828.6 829.1 826.8 824.8 MAX. QFE PRESSURE IN HPA 834.0 831.0 834.0 829.0 830.0 828.2 826.5 826.4 829.5 835.3 837.0 835.8 837.0 DAY-HOUR 26- 6 8- 6 9-18 24- 6 16- 6 1- 6 9- 3 4- 6 27- 6 19- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 817.5 811.0 820.0 815.0 817.2 816.8 816.5 817.8 820.5 822.0 822.5 815.2 811.0 DAY-HOUR 23- 0 15-12 24-12 2- 3 12-15 26-12 4-15 8-15 10-12 14- 3 1-15 25- 3 MEAN QNH PRESSURE IN HPA 1018.3 1015.2 1019.3 1016.1 1017.3 1015.3 1013.9 1014.9 1017.5 1022.3 1022.8 1020.1 1017.7 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1028.6 1022.7 1023.9 1021.8 1019.7 1019.6 1023.3 1030.2 1032.2 1030.8 1032.2 DAY-HOUR 26- 6 8- 6 9-18 24- 6 16- 6 1- 6 9- 3 4- 6 27- 6 19- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1009.1 1001.4 1012.0 1006.1 1008.7 1008.2 1007.9 1009.4 1012.6 1014.4 1015.0 1006.3 1001.4 DAY-HOUR 23- 0 15-12 24-12 2- 3 12-15 26-12 4-15 8-15 10-12 14- 3 1-15 25- 3 MEAN QFF PRESSURE IN HPA 1026.2 1020.9 1018.8 1010.9 1007.6 1002.0 998.2 999.9 1005.8 1015.6 1019.4 1022.2 1012.3 MAX. QFF PRESSURE IN HPA 1047.7 1037.6 1031.8 1018.8 1015.7 1010.8 1006.5 1006.1 1013.0 1027.6 1033.0 1048.5 1048.5 DAY-HOUR 26-18 1- 3 21- 6 20- 3 15- 3 1- 3 9- 3 29- 6 27- 3 19- 3 14- 6 28-15 MIN. QFF PRESSURE IN HPA 1010.9 1004.3 1006.7 999.8 997.5 992.6 991.3 991.4 999.8 1004.9 1008.2 1007.8 991.3 DAY-HOUR 4-12 19- 9 24-12 15-15 12- 3 26-12 29-12 6- 9 1-12 1-12 1-12 25- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.0 822.5 826.3 823.6 824.4 823.1 821.8 822.9 825.0 828.7 828.9 826.9 824.9 MAX. QFE PRESSURE IN HPA 833.2 830.0 834.0 828.3 828.2 828.2 826.2 825.2 828.0 834.5 836.0 834.0 836.0 DAY 20 8 10 25 16 5 9 5 27 19 23 28 MIN. QFE PRESSURE IN HPA 817.5 814.2 822.0 815.2 817.8 818.0 818.5 820.0 822.3 822.3 823.5 816.0 814.2 DAY 23 10 6 2 13 26 2 7 10 14 1 25 MEAN QNH PRESSURE IN HPA 1017.9 1015.0 1019.5 1016.2 1017.2 1015.7 1014.2 1015.5 1017.9 1022.4 1022.6 1020.3 1017.9 MAX. QNH PRESSURE IN HPA 1027.7 1023.9 1028.6 1021.9 1021.8 1021.8 1019.4 1018.2 1021.5 1029.2 1031.0 1028.6 1031.0 DAY 20 8 10 25 16 5 9 5 27 19 23 28 MIN. QNH PRESSURE IN HPA 1009.1 1005.1 1014.4 1006.3 1009.4 1009.7 1010.3 1012.0 1014.8 1014.8 1016.2 1007.3 1005.1 DAY 23 10 6 2 13 26 2 7 10 14 1 25 MEAN QFF PRESSURE IN HPA 1025.2 1020.4 1018.6 1011.0 1007.6 1002.4 998.3 1000.2 1005.9 1015.2 1018.3 1021.4 1012.0 MAX. QFF PRESSURE IN HPA 1043.8 1034.7 1029.8 1017.1 1013.5 1009.8 1006.1 1005.2 1010.6 1025.1 1029.3 1044.8 1044.8 DAY 27 1 21 20 15 1 9 22 29 19 14 28 MIN. QFF PRESSURE IN HPA 1011.9 1008.2 1009.7 1001.1 999.3 994.3 993.2 995.9 1000.7 1005.1 1008.9 1008.3 993.2 DAY 18 10 24 29 12 26 27 7 1 14 10 25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.0 822.5 826.2 823.6 824.7 823.5 822.2 823.2 825.2 829.0 829.2 826.9 825.1 MAX. QFE PRESSURE IN HPA 833.3 830.0 833.2 829.0 828.9 827.7 826.5 826.0 828.4 834.7 836.0 834.0 836.0 DAY 26 8 10 25 16 5 9 4 27 16 23 28 MIN. QFE PRESSURE IN HPA 819.0 813.0 821.2 815.0 817.5 818.5 818.5 820.0 822.2 822.0 823.6 815.2 813.0 DAY 18 10 14 2 13 26 2 8 10 14 1 25 MEAN QNH PRESSURE IN HPA 1018.0 1015.0 1019.3 1016.4 1017.6 1016.2 1014.6 1015.8 1018.1 1022.7 1022.9 1020.2 1018.1 MAX. QNH PRESSURE IN HPA 1027.8 1023.9 1027.7 1022.7 1022.6 1021.2 1019.7 1019.1 1022.0 1029.5 1031.0 1028.6 1031.0 DAY 26 8 10 25 16 5 9 4 27 16 23 28 MIN. QNH PRESSURE IN HPA 1010.8 1003.7 1013.5 1006.1 1009.1 1010.3 1010.3 1012.0 1014.6 1014.4 1016.3 1006.3 1003.7 DAY 18 10 14 2 13 26 2 8 10 14 1 25 MEAN QFF PRESSURE IN HPA 1026.6 1021.6 1019.6 1012.0 1008.7 1003.7 1000.1 1002.0 1008.2 1017.3 1020.8 1023.2 1013.7 MAX. QFF PRESSURE IN HPA 1044.9 1037.6 1031.7 1018.8 1015.7 1010.8 1006.5 1005.9 1013.0 1027.6 1032.7 1047.6 1047.6 DAY 27 1 21 20 15 1 9 24 27 19 14 28 MIN. QFF PRESSURE IN HPA 1013.9 1006.0 1008.1 1001.0 997.5 996.3 995.6 996.7 1002.8 1006.2 1010.6 1007.8 995.6 DAY 1 19 14 29 12 26 30 7 1 14 10 25 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.0 823.5 827.1 824.2 825.3 823.9 822.9 823.8 825.9 829.9 830.3 827.9 825.9 MAX. QFE PRESSURE IN HPA 834.0 831.0 834.0 829.0 830.0 828.2 826.5 826.4 829.5 835.3 837.0 835.8 837.0 DAY 26 8 10 24 16 1 15 4 27 19 23 28 MIN. QFE PRESSURE IN HPA 820.1 813.4 822.0 816.2 818.0 818.5 819.0 820.3 823.0 822.2 824.4 817.7 813.4 DAY 23 10 24 2 13 26 2 8 10 14 12 25 MEAN QNH PRESSURE IN HPA 1019.2 1016.1 1020.5 1017.0 1018.4 1016.7 1015.4 1016.5 1019.1 1023.8 1024.3 1021.4 1019.0 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1028.6 1022.7 1023.9 1021.8 1019.7 1019.6 1023.3 1030.2 1032.2 1030.8 1032.2 DAY 26 8 10 24 16 1 15 4 27 19 23 28 MIN. QNH PRESSURE IN HPA 1012.1 1004.2 1014.4 1007.5 1009.7 1010.3 1010.8 1012.4 1015.6 1014.6 1017.2 1009.3 1004.2 DAY 23 10 24 2 13 26 2 8 10 14 12 25 MEAN QFF PRESSURE IN HPA 1027.7 1022.3 1020.6 1011.7 1008.4 1003.1 999.8 1001.5 1007.1 1017.1 1021.5 1024.2 1013.8 MAX. QFF PRESSURE IN HPA 1046.7 1036.4 1031.8 1018.7 1015.3 1010.4 1005.8 1006.1 1012.6 1027.2 1033.0 1048.3 1048.3 DAY 27 1 21 8 16 1 8 29 27 19 14 28 MIN. QFF PRESSURE IN HPA 1013.8 1006.9 1008.2 1000.4 1001.9 995.1 994.4 995.5 1002.0 1007.0 1010.8 1011.8 994.4 DAY 1 19 24 29 2 26 29 7 1 14 1 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.6 823.1 826.3 823.4 824.7 822.9 821.9 822.5 824.8 828.8 829.2 826.9 825.0 MAX. QFE PRESSURE IN HPA 834.0 831.0 833.8 828.0 828.5 827.6 825.9 825.4 828.0 833.5 835.5 835.0 835.5 DAY 26 8 9 23 16 4 15 4 25 19 23 28 MIN. QFE PRESSURE IN HPA 819.6 813.0 821.0 816.0 818.0 817.5 818.0 819.4 821.2 822.0 823.8 818.0 813.0 DAY 17 10 24 1 13 26 2 8 10 14 12 25 MEAN QNH PRESSURE IN HPA 1018.7 1015.7 1019.4 1016.0 1017.6 1015.5 1014.2 1015.0 1017.7 1022.4 1022.9 1020.2 1017.9 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1028.4 1021.5 1022.1 1021.0 1019.0 1018.4 1021.5 1028.0 1030.4 1029.8 1030.4 DAY 26 8 9 23 16 4 15 4 25 19 23 28 MIN. QNH PRESSURE IN HPA 1011.6 1003.7 1013.2 1007.3 1009.7 1009.1 1009.7 1011.3 1013.5 1014.4 1016.5 1009.7 1003.7 DAY 17 10 24 1 13 26 2 8 10 14 12 25 MEAN QFF PRESSURE IN HPA 1025.9 1020.8 1018.5 1010.3 1007.5 1001.6 997.6 999.0 1004.8 1014.8 1018.5 1021.5 1011.7 MAX. QFF PRESSURE IN HPA 1042.6 1032.0 1029.3 1018.2 1013.1 1008.8 1003.2 1002.9 1010.4 1023.6 1030.0 1046.9 1046.9 DAY 27 8 21 8 15 1 8 29 28 19 14 28 MIN. QFF PRESSURE IN HPA 1013.0 1004.3 1007.0 1000.7 1001.3 993.2 992.1 991.4 1000.0 1005.8 1008.7 1010.9 991.4 DAY 1 19 24 15 22 26 29 6 1 1 9 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 824.6 822.0 825.0 822.4 823.6 821.7 820.5 821.0 823.3 827.5 827.9 825.8 823.8 MAX. QFE PRESSURE IN HPA 833.3 830.0 832.1 826.8 827.5 826.7 824.4 823.7 827.0 832.2 834.0 834.0 834.0 DAY 26 8 9 24 16 4 15 4 27 19 22 28 MIN. QFE PRESSURE IN HPA 818.1 811.0 820.0 815.6 817.2 816.8 816.8 817.9 820.5 822.2 822.9 818.2 811.0 DAY 4 15 24 15 13 26 2 8 10 1 1 24 MEAN QNH PRESSURE IN HPA 1017.5 1014.4 1018.0 1014.9 1016.3 1014.1 1012.6 1013.2 1016.0 1020.9 1021.4 1018.9 1016.5 MAX. QNH PRESSURE IN HPA 1027.8 1023.9 1026.4 1020.1 1020.9 1020.0 1017.2 1016.4 1020.3 1026.5 1028.6 1028.6 1028.6 DAY 26 8 9 24 16 4 15 4 27 19 22 28 MIN. QNH PRESSURE IN HPA 1009.8 1001.4 1012.0 1006.8 1008.7 1008.2 1008.2 1009.5 1012.6 1014.6 1015.5 1009.9 1001.4 DAY 4 15 24 15 13 26 2 8 10 1 1 24 MEAN QFF PRESSURE IN HPA 1024.8 1019.5 1016.9 1009.6 1006.5 1000.7 996.6 997.7 1003.6 1013.6 1017.1 1020.1 1010.6 MAX. QFF PRESSURE IN HPA 1044.8 1031.8 1026.5 1015.7 1011.8 1007.2 1002.5 1001.5 1008.1 1022.1 1027.5 1044.8 1044.8 DAY 26 8 20 4 16 1 8 11 29 19 14 28 MIN. QFF PRESSURE IN HPA 1010.9 1005.3 1006.7 999.8 999.9 992.6 991.3 993.3 999.8 1004.9 1008.2 1010.2 991.3 DAY 4 15 24 15 11 26 29 7 1 1 1 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.8 822.2 825.1 822.5 823.4 821.3 820.1 820.8 823.2 827.6 828.4 826.2 823.8 MAX. QFE PRESSURE IN HPA 833.0 829.2 832.9 826.8 827.0 826.7 824.0 823.5 826.8 832.8 835.0 835.0 835.0 DAY 26 8 9 24 16 4 15 4 27 15 22 28 MIN. QFE PRESSURE IN HPA 818.2 812.0 820.0 815.4 817.2 816.8 816.5 817.8 820.7 822.8 822.5 817.3 812.0 DAY 1 15 24 1 12 26 4 8 18 1 1 24 MEAN QNH PRESSURE IN HPA 1017.8 1014.7 1018.1 1015.0 1016.1 1013.6 1012.2 1013.0 1015.8 1021.0 1021.9 1019.4 1016.5 MAX. QNH PRESSURE IN HPA 1027.4 1022.9 1027.3 1020.1 1020.3 1020.0 1016.8 1016.2 1020.1 1027.2 1029.8 1029.8 1029.8 DAY 26 8 9 24 16 4 15 4 27 15 22 28 MIN. QNH PRESSURE IN HPA 1009.9 1002.5 1012.0 1006.6 1008.7 1008.2 1007.9 1009.4 1012.9 1015.3 1015.0 1008.8 1002.5 DAY 1 15 24 1 12 26 4 8 18 1 1 24 MEAN QFF PRESSURE IN HPA 1026.6 1021.1 1018.1 1010.6 1007.1 1001.0 997.5 999.0 1005.6 1015.7 1019.9 1022.5 1012.0 MAX. QFF PRESSURE IN HPA 1046.8 1031.3 1028.5 1016.7 1012.1 1007.6 1003.1 1002.1 1010.7 1024.6 1030.3 1048.5 1048.5 DAY 26 1 9 3 16 4 5 23 27 18 14 28 MIN. QFF PRESSURE IN HPA 1011.4 1006.8 1009.5 999.8 1000.3 994.4 993.2 994.0 1001.7 1007.7 1010.2 1011.9 993.2 DAY 4 15 24 15 12 25 29 6 1 1 1 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 825.7 822.9 826.4 823.8 824.6 822.5 821.4 822.5 824.5 828.9 829.3 827.0 825.0 MAX. QFE PRESSURE IN HPA 833.8 830.0 834.0 828.0 828.0 828.0 825.2 825.0 828.0 834.7 836.0 834.8 836.0 DAY 26 7 9 24 18 4 8 3 26 15 22 28 MIN. QFE PRESSURE IN HPA 818.2 813.5 821.0 817.0 817.5 818.0 818.1 818.4 822.0 824.0 824.5 817.0 813.5 DAY 1 15 31 1 12 25 30 7 18 1 1 24 MEAN QNH PRESSURE IN HPA 1018.7 1015.5 1019.7 1016.6 1017.4 1015.0 1013.6 1015.0 1017.3 1022.5 1023.1 1020.3 1017.9 MAX. QNH PRESSURE IN HPA 1028.4 1023.9 1028.6 1021.5 1021.5 1021.5 1018.2 1018.0 1021.5 1029.5 1031.0 1029.6 1031.0 DAY 26 7 9 24 18 4 8 3 26 15 22 28 MIN. QNH PRESSURE IN HPA 1009.9 1004.3 1013.2 1008.5 1009.1 1009.7 1009.8 1010.1 1014.4 1016.8 1017.4 1008.5 1004.3 DAY 1 15 31 1 12 25 30 7 18 1 1 24 MEAN QFF PRESSURE IN HPA 1027.4 1021.5 1019.6 1011.2 1007.5 1001.6 998.1 1000.2 1005.7 1016.0 1020.4 1023.2 1012.7 MAX. QFF PRESSURE IN HPA 1047.7 1030.5 1031.2 1017.4 1012.8 1009.8 1004.7 1003.7 1010.7 1024.8 1030.2 1046.6 1047.7 DAY 26 8 20 8 15 4 8 23 27 18 14 28 MIN. QFF PRESSURE IN HPA 1011.1 1007.6 1009.4 1002.6 1001.1 994.2 993.7 993.7 1000.8 1006.5 1009.1 1011.3 993.7 DAY 1 15 31 15 11 25 27 6 9 1 9 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 825.4 822.8 826.6 824.0 824.9 823.0 822.0 823.1 825.0 828.9 829.3 827.0 825.2 MAX. QFE PRESSURE IN HPA 833.0 830.0 834.0 828.3 828.0 828.2 826.2 825.2 828.5 834.5 836.0 834.0 836.0 DAY 19 7 9 24 15 4 8 4 27 18 22 28 MIN. QFE PRESSURE IN HPA 818.0 814.5 821.0 816.4 818.3 818.5 818.8 820.0 822.9 824.2 824.5 816.0 814.5 DAY 17 15 31 1 12 25 1 7 9 13 1 24 MEAN QNH PRESSURE IN HPA 1018.5 1015.4 1019.8 1016.8 1017.8 1015.6 1014.4 1015.7 1017.9 1022.6 1023.1 1020.3 1018.2 MAX. QNH PRESSURE IN HPA 1027.4 1023.9 1028.6 1021.9 1021.5 1021.8 1019.4 1018.2 1022.1 1029.2 1031.0 1028.6 1031.0 DAY 19 7 9 24 15 4 8 4 27 18 22 28 MIN. QNH PRESSURE IN HPA 1009.7 1005.5 1013.2 1007.8 1010.0 1010.3 1010.6 1012.0 1015.5 1017.0 1017.4 1007.3 1005.5 DAY 17 15 31 1 12 25 1 7 9 13 1 24 MEAN QFF PRESSURE IN HPA 1025.9 1020.4 1018.7 1011.1 1007.7 1001.9 998.0 1000.0 1005.4 1015.1 1018.9 1021.7 1012.1 MAX. QFF PRESSURE IN HPA 1042.4 1028.9 1031.6 1016.8 1012.6 1009.3 1005.1 1004.1 1010.9 1025.1 1029.4 1045.5 1045.5 DAY 26 7 20 7 15 4 8 29 27 18 13 28 MIN. QFF PRESSURE IN HPA 1011.3 1006.7 1007.1 1001.8 1000.8 995.3 992.9 994.6 1001.9 1007.3 1009.4 1008.5 992.9 DAY 1 15 31 1 11 25 26 6 9 1 9 24 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.2 -2.6 4.8 12.1 15.6 22.0 24.8 24.6 19.7 12.3 6.8 -3.0 11.2 MINIMUN AIR TEMPERATURE (C) -5.5 -7.1 0.1 4.7 7.1 11.1 13.6 12.9 8.4 4.3 -0.6 -6.9 3.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 20 18 4 0 0 0 0 0 0 0 9 19 70 DAYS WITH FREEZING MIN.<= 0 31 26 17 4 0 0 0 0 0 1 17 23 119 TEMPERATURE RECORDS LOWEST(C) -13.0 -18.0 -9.6 -1.0 1.4 5.2 8.6 10.0 4.0 -1.0 -7.0 -21.6 -21.6 DAY 16 13 11 13 6 1 8 29 27 30 27 24 MAXIMUM AIR TEMPERATURE (C) 1.8 2.5 10.3 19.4 22.9 30.9 34.3 35.4 30.0 20.6 14.6 2.4 18.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 31 31 14 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 5 10 0 0 0 0 0 0 0 0 0 9 24 TEMPERATURE RECORDS HIGHEST(C) 7.6 12.0 18.4 25.0 27.0 36.8 37.8 38.2 36.0 24.8 22.2 12.0 38.2 DAY 31 26 29 25 16 30 30 23 1 7 3 9 DIF. BETWEEN (MAX.-MIN.) (C) 7.3 9.6 10.2 14.7 15.8 19.8 20.7 22.5 21.6 16.3 15.2 9.3 15.3 MEAN DAILY TEMP. (MDT) (C) -1.8 -2.3 5.2 12.1 15.0 21.0 24.0 24.2 19.2 12.5 7.0 -2.2 11.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 26.4 92.5 98.6 12.8 0.0 0.0 0.0 230.3 HEATING DEG. DAYS(BASE 18 0C) 615.2 568.3 397.9 178.3 96.0 1.3 0.0 0.0 19.6 171.2 329.5 627.0 3004.3 DEWPOINT (MEAN C) -5.6 -6.5 -1.1 0.7 3.1 7.0 4.4 2.8 -0.2 0.6 -3.1 -7.8 -0.5 MIXING RATIO (G/KG) 3.13 3.08 4.42 5.04 5.96 7.81 6.64 5.83 4.71 4.95 3.86 2.82 4.85 VAPOUR PRESSURE (HPA) 4.13 4.06 5.80 6.63 7.81 10.20 8.66 7.63 6.20 6.55 5.10 3.71 6.37 SATURATION DEF. (HPA) 1.21 1.39 3.33 8.50 11.05 18.15 25.07 26.10 19.13 8.67 5.61 1.81 10.84 RELATIVE HUMIDITY (MEAN %) 80 76 69 50 47 41 29 27 29 50 53 73 52 RELATIVE HUMIDITY (MAX. %) 92 92 91 80 72 68 46 45 48 76 75 88 73 RELATIVE HUMIDITY (MIN. %) 64 57 45 28 29 24 18 13 16 27 33 51 34 RELATIVE HUMIDITY (MEAN% 03UTC) 88 86 88 75 71 67 44 45 47 74 71 81 70 RELATIVE HUMIDITY (MEAN% 09UTC) 72 68 57 35 34 30 22 20 21 32 42 64 41 RELATIVE HUMIDITY (MEAN% 15UTC) 75 68 54 36 34 28 21 16 19 36 39 69 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.5 47.4 64.2 29.0 6.0 0.0 0.0 0.0 0.0 8.9 0.0 89.3 270.3 DAYS WITH PRECIPITATION >=10 0 0 4 1 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 5 1 5 5 1 0 0 0 0 0 0 0 5 17 DAYS WITH PRECIPITATION >= 1 7 11 10 5 2 0 0 0 0 4 0 10 49 DAYS WITH PRECIPITATION 10 11 13 5 3 1 0 0 0 7 1 14 65 GREATEST DAILY PRECIPITATION 9.0 8.5 16.0 18.0 3.0 0.0 0.0 0.0 0.0 3.2 0.0 35.0 35.0 DAY 14 27 25 4 4 ** ** ** ** 16 ** 12 DAY WITH THUNDER STORM 0 0 0 2 1 1 0 0 0 0 0 1 5 DAYS WITH SNOW OR SLEET 10 9 3 0 0 0 0 0 0 0 0 5 27 DAYS WITH DUST 0 0 1 5 11 3 8 5 3 3 0 0 39 WIND DIRECTION (PREVAILING) 270 225 135 225 270 270 135 45 225 225 135 225 225 PREVAILING WIND SPEED(KNOTS) 8.3 11.7 13.8 10.7 9.6 8.6 11.2 9.1 9.6 8.5 9.2 9.6 9.6 PREVAILING WIND PERCENT 2.8 4.5 6.5 15.0 15.7 7.9 11.3 6.0 7.1 6.0 4.6 7.3 6.8 CALMS PERCENT OF WIND 87.5 76.3 61.3 48.3 56.5 65.8 66.9 71.8 74.6 79.8 78.8 75.4 70.2 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 236 249 173 255 261 233 105 92 242 253 200 227 238 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.6 0.4 3.2 3.1 0.3 1.4 0.8 0.7 0.3 0.8 0.7 0.7 WIND STEADINESES (MEAN %) 40.0 30.0 10.8 60.4 73.8 10.3 45.2 38.1 30.4 17.6 42.1 33.3 25.9 WIND SPEED (MEAN KNOTS) 1.0 2.0 3.7 5.3 4.2 2.9 3.1 2.1 2.3 1.7 1.9 2.1 2.7 FASTEST WIND DIRECTION 300 210 120 230 240 60 120 50 270 90 160 210 270 FASTEST WIND SPEED (KNOTS) 19 23 23 29 23 19 19 29 35 23 27 27 35 DAY 5 17 5 4 17 18 1 27 19 1 30 9 DAYS WITH SKY CLEAR (0-2)/8 9 7 6 10 16 29 31 31 30 16 18 12 215 DAYS WITH P.CLOUDY (3-6)/8 8 10 12 16 12 1 0 0 0 9 9 6 83 DAYS WITH CLOUDY (7-8)/8 14 11 13 4 3 0 0 0 0 6 3 13 67 DAYS WITH VISIBILITY =< 2 KM 16 6 4 1 3 0 0 0 1 4 0 14 49 DURATION OF SUNSHINE HOURS 103.3 126.0 146.7 250.6 308.3 355.4 344.9 ****** ****** ****** ****** 104.6 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.9 824.9 823.2 825.2 823.0 822.9 820.5 821.9 826.3 828.9 829.2 824.2 824.6 MAX. QFE PRESSURE IN HPA 832.8 834.5 830.1 830.9 829.0 830.0 824.5 827.0 831.0 833.0 834.3 832.0 834.5 DAY-HOUR 13- 6 15- 6 29- 6 19- 6 24-21 23-21 11- 6 31-21 16- 6 13- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 815.0 817.0 812.0 816.0 816.8 815.4 814.7 816.8 819.0 824.0 822.0 813.2 812.0 DAY-HOUR 25-12 21- 0 6-12 4-12 22-15 11-12 13-15 11-15 3-15 15-12 30-21 31-15 MEAN QNH PRESSURE IN HPA 1017.8 1017.9 1015.8 1018.2 1015.6 1015.4 1012.6 1014.2 1019.5 1022.6 1022.9 1017.0 1017.5 MAX. QNH PRESSURE IN HPA 1027.2 1029.2 1024.0 1025.0 1022.7 1023.9 1017.4 1020.3 1025.1 1027.4 1029.0 1026.3 1029.2 DAY-HOUR 13- 6 15- 6 29- 6 19- 6 24-21 23-21 11- 6 31-21 16- 6 13- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1006.1 1008.5 1002.5 1007.3 1008.2 1006.6 1005.7 1008.2 1010.8 1016.8 1014.4 1004.0 1002.5 DAY-HOUR 25-12 21- 0 6-12 4-12 22-15 11-12 13-15 11-15 3-15 15-12 30-21 31-15 MEAN QFF PRESSURE IN HPA 1022.2 1022.6 1014.6 1011.7 1006.4 1001.8 997.1 999.0 1007.8 1016.0 1020.5 1022.1 1011.8 MAX. QFF PRESSURE IN HPA 1033.2 1041.0 1027.1 1021.1 1018.2 1011.5 1003.4 1005.9 1017.0 1022.6 1031.8 1042.0 1042.0 DAY-HOUR 13- 6 15- 6 11- 6 14- 6 25- 3 1- 3 2- 3 31-21 27- 3 21- 6 27- 6 24- 6 MIN. QFF PRESSURE IN HPA 1007.6 1009.2 1000.7 998.6 997.4 992.2 989.9 991.6 996.5 1009.7 1005.1 1004.5 989.9 DAY-HOUR 25-12 27- 0 23-12 9-12 16-21 11- 9 27-12 25-12 3-12 1-21 4- 9 9-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.1 824.6 823.0 825.1 823.0 823.1 820.7 822.2 826.5 828.9 829.4 824.4 824.7 MAX. QFE PRESSURE IN HPA 832.0 832.6 828.3 829.4 828.0 829.0 824.0 825.0 830.0 833.0 832.6 831.0 833.0 DAY 13 16 30 19 25 23 12 9 16 28 24 17 MIN. QFE PRESSURE IN HPA 816.0 817.0 813.1 818.1 818.0 817.6 816.7 818.6 821.8 825.0 824.3 819.0 813.1 DAY 26 21 7 10 23 12 14 12 4 15 4 22 MEAN QNH PRESSURE IN HPA 1018.1 1017.5 1015.6 1018.1 1015.6 1015.7 1012.8 1014.7 1019.7 1022.5 1023.2 1017.3 1017.6 MAX. QNH PRESSURE IN HPA 1026.3 1027.0 1021.9 1023.2 1021.5 1022.7 1016.8 1018.0 1023.9 1027.4 1027.0 1025.1 1027.4 DAY 13 16 30 19 25 23 12 9 16 28 24 17 MIN. QNH PRESSURE IN HPA 1007.3 1008.5 1003.8 1009.8 1009.7 1009.2 1008.1 1010.4 1014.2 1018.0 1017.1 1010.8 1003.8 DAY 26 21 7 10 23 12 14 12 4 15 4 22 MEAN QFF PRESSURE IN HPA 1022.0 1021.6 1013.9 1011.3 1006.4 1002.1 997.3 998.9 1007.5 1015.3 1019.9 1021.3 1011.5 MAX. QFF PRESSURE IN HPA 1030.9 1037.5 1024.2 1019.7 1017.1 1009.4 1002.3 1002.2 1015.4 1021.0 1026.8 1038.5 1038.5 DAY 13 15 11 14 25 1 12 28 27 21 28 24 MIN. QFF PRESSURE IN HPA 1009.5 1009.2 1004.0 1001.0 997.8 996.0 992.7 994.6 999.9 1010.0 1006.3 1007.5 992.7 DAY 25 27 7 10 17 12 14 6 4 15 4 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.8 824.8 823.3 825.4 823.4 823.6 821.3 822.7 826.9 829.3 829.5 824.3 824.9 MAX. QFE PRESSURE IN HPA 832.0 833.0 829.0 830.0 828.4 829.0 824.0 826.0 830.0 832.5 833.0 831.0 833.0 DAY 13 15 29 19 25 23 12 23 16 13 24 17 MIN. QFE PRESSURE IN HPA 816.0 818.0 814.2 818.5 818.8 817.6 817.5 819.0 822.2 825.0 824.3 818.7 814.2 DAY 26 21 7 10 22 12 14 12 4 15 4 22 MEAN QNH PRESSURE IN HPA 1017.7 1017.8 1015.9 1018.5 1016.1 1016.3 1013.5 1015.2 1020.2 1023.1 1023.3 1017.2 1017.9 MAX. QNH PRESSURE IN HPA 1026.3 1027.4 1022.7 1023.9 1022.0 1022.7 1016.8 1019.1 1023.9 1026.8 1027.4 1025.1 1027.4 DAY 13 15 29 19 25 23 12 23 16 13 24 17 MIN. QNH PRESSURE IN HPA 1007.3 1009.7 1005.1 1010.3 1010.6 1009.2 1009.1 1010.8 1014.6 1018.0 1017.1 1010.5 1005.1 DAY 26 21 7 10 22 12 14 12 4 15 4 22 MEAN QFF PRESSURE IN HPA 1022.7 1023.1 1015.2 1013.0 1007.7 1003.8 999.1 1001.3 1010.0 1017.8 1022.1 1022.7 1013.2 MAX. QFF PRESSURE IN HPA 1032.0 1040.3 1026.1 1020.7 1018.2 1011.5 1003.4 1005.7 1017.0 1022.5 1030.1 1040.1 1040.3 DAY 18 15 11 19 25 1 2 23 27 21 27 24 MIN. QFF PRESSURE IN HPA 1010.0 1010.1 1006.0 1002.4 1000.1 997.1 993.8 996.3 1002.1 1011.1 1009.0 1010.1 993.8 DAY 25 27 7 9 22 11 27 6 4 15 4 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.8 825.8 824.1 826.2 824.0 824.1 821.7 823.2 827.6 830.2 830.4 825.1 825.7 MAX. QFE PRESSURE IN HPA 832.8 834.5 830.1 830.9 828.8 829.0 824.5 826.2 831.0 833.0 834.3 832.0 834.5 DAY 13 15 29 19 25 23 11 23 16 13 24 17 MIN. QFE PRESSURE IN HPA 817.0 819.5 813.0 820.0 819.0 818.0 818.0 819.4 823.0 825.7 824.0 818.5 813.0 DAY 25 4 6 4 22 11 14 12 3 15 4 25 MEAN QNH PRESSURE IN HPA 1018.9 1019.0 1016.9 1019.4 1016.7 1016.9 1014.1 1015.8 1021.0 1024.1 1024.3 1018.0 1018.8 MAX. QNH PRESSURE IN HPA 1027.2 1029.2 1024.0 1025.0 1022.5 1022.7 1017.4 1019.4 1025.1 1027.4 1029.0 1026.3 1029.2 DAY 13 15 29 19 25 23 11 23 16 13 24 17 MIN. QNH PRESSURE IN HPA 1008.5 1011.4 1003.7 1012.0 1010.8 1009.7 1009.7 1011.3 1015.6 1018.8 1016.8 1010.3 1003.7 DAY 25 4 6 4 22 11 14 12 3 15 4 25 MEAN QFF PRESSURE IN HPA 1023.9 1024.3 1016.2 1012.9 1007.2 1002.9 998.4 1000.5 1009.3 1017.9 1022.5 1024.0 1013.3 MAX. QFF PRESSURE IN HPA 1033.2 1041.0 1027.1 1021.1 1016.8 1010.4 1003.3 1005.2 1016.6 1022.6 1031.8 1042.0 1042.0 DAY 13 15 11 14 25 1 11 23 28 21 27 24 MIN. QFF PRESSURE IN HPA 1010.3 1013.9 1004.5 1003.7 1000.5 994.6 992.6 995.4 1000.8 1012.3 1007.3 1011.2 992.6 DAY 25 4 6 9 22 11 23 6 3 15 4 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 824.9 825.3 823.6 825.4 823.2 823.1 820.7 822.0 826.4 829.0 829.2 824.1 824.8 MAX. QFE PRESSURE IN HPA 832.4 834.0 829.9 830.4 827.5 828.0 824.5 825.0 829.8 832.1 833.0 830.2 834.0 DAY 13 15 29 19 25 22 11 23 17 27 24 17 MIN. QFE PRESSURE IN HPA 816.0 818.5 813.0 817.0 819.0 816.2 817.0 818.2 821.2 825.1 822.6 815.0 813.0 DAY 25 4 6 4 22 11 13 12 3 15 4 25 MEAN QNH PRESSURE IN HPA 1017.9 1018.3 1016.3 1018.4 1015.8 1015.7 1012.8 1014.4 1019.7 1022.7 1022.9 1016.9 1017.7 MAX. QNH PRESSURE IN HPA 1026.7 1028.6 1023.8 1024.4 1020.9 1021.5 1017.4 1018.0 1023.7 1026.4 1027.4 1024.1 1028.6 DAY 13 15 29 19 25 22 11 23 17 27 24 17 MIN. QNH PRESSURE IN HPA 1007.3 1010.3 1003.7 1008.5 1010.8 1007.5 1008.5 1009.9 1013.5 1018.1 1015.1 1006.1 1003.7 DAY 25 4 6 4 22 11 13 12 3 15 4 25 MEAN QFF PRESSURE IN HPA 1022.0 1022.8 1014.8 1011.3 1006.0 1001.2 996.5 998.3 1006.7 1015.1 1019.6 1021.5 1011.3 MAX. QFF PRESSURE IN HPA 1032.7 1038.6 1026.7 1020.1 1013.7 1010.3 1002.8 1002.4 1014.2 1020.4 1027.3 1038.3 1038.6 DAY 13 15 11 14 25 1 11 23 27 21 24 24 MIN. QFF PRESSURE IN HPA 1009.0 1012.9 1003.3 1001.3 1000.0 992.2 990.6 992.8 997.8 1010.3 1005.1 1008.0 990.6 DAY 25 4 6 4 17 11 23 10 3 2 4 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.9 824.1 822.4 824.2 822.2 821.8 819.4 820.4 825.0 827.8 827.9 823.1 823.5 MAX. QFE PRESSURE IN HPA 831.1 833.0 828.0 829.0 825.5 828.0 823.0 823.8 828.2 831.2 831.8 829.0 833.0 DAY 12 15 29 19 25 22 11 31 17 27 24 23 MIN. QFE PRESSURE IN HPA 815.0 818.5 812.0 816.0 817.0 815.4 815.0 816.8 819.2 824.0 822.6 814.0 812.0 DAY 25 3 6 4 22 11 13 25 3 15 4 31 MEAN QNH PRESSURE IN HPA 1016.7 1016.9 1014.8 1017.0 1014.7 1014.2 1011.3 1012.6 1017.9 1021.3 1021.4 1015.7 1016.2 MAX. QNH PRESSURE IN HPA 1025.2 1027.4 1021.5 1022.7 1018.6 1021.5 1015.6 1016.5 1021.8 1025.3 1026.0 1022.7 1027.4 DAY 12 15 29 19 25 22 11 31 17 27 24 23 MIN. QNH PRESSURE IN HPA 1006.1 1010.3 1002.5 1007.3 1008.5 1006.6 1006.1 1008.2 1011.1 1016.8 1015.1 1004.9 1002.5 DAY 25 3 6 4 22 11 13 25 3 15 4 31 MEAN QFF PRESSURE IN HPA 1020.4 1020.9 1013.1 1010.1 1005.4 1000.3 995.5 996.7 1005.6 1014.0 1018.1 1019.9 1010.0 MAX. QFF PRESSURE IN HPA 1030.3 1037.1 1024.3 1018.8 1011.6 1008.4 1001.6 1000.6 1012.6 1018.8 1026.2 1034.8 1037.1 DAY 13 15 11 14 5 1 2 31 30 17 27 24 MIN. QFF PRESSURE IN HPA 1007.6 1011.3 1000.7 998.6 998.7 993.1 989.9 991.6 996.5 1009.8 1005.9 1004.5 989.9 DAY 25 4 23 9 22 11 27 25 3 15 4 9 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.4 824.5 822.5 824.5 822.1 821.4 818.9 820.2 824.9 828.0 828.3 823.7 823.6 MAX. QFE PRESSURE IN HPA 832.0 832.9 827.6 829.2 825.3 827.8 822.2 823.5 828.4 832.0 831.9 830.0 832.9 DAY 12 15 29 18 24 22 11 31 17 27 24 17 MIN. QFE PRESSURE IN HPA 815.0 818.1 812.2 818.1 816.8 815.6 814.7 816.8 819.0 824.4 823.4 813.2 812.2 DAY 25 20 6 9 22 11 13 11 3 15 4 31 MEAN QNH PRESSURE IN HPA 1017.2 1017.4 1015.0 1017.3 1014.5 1013.7 1010.7 1012.2 1017.9 1021.6 1021.9 1016.4 1016.3 MAX. QNH PRESSURE IN HPA 1026.3 1027.3 1021.0 1022.9 1018.3 1021.3 1014.6 1016.2 1022.0 1026.3 1026.1 1023.9 1027.3 DAY 12 15 29 18 24 22 11 31 17 27 24 17 MIN. QNH PRESSURE IN HPA 1006.1 1009.8 1002.8 1009.8 1008.2 1006.8 1005.7 1008.2 1010.8 1017.2 1016.1 1004.0 1002.8 DAY 25 20 6 9 22 11 13 11 3 15 4 31 MEAN QFF PRESSURE IN HPA 1022.1 1022.6 1014.1 1011.7 1006.1 1001.0 996.1 998.3 1007.6 1016.3 1020.6 1022.1 1011.6 MAX. QFF PRESSURE IN HPA 1031.7 1039.1 1025.9 1018.1 1014.1 1009.4 1002.1 1003.1 1013.8 1021.7 1027.9 1036.9 1039.1 DAY 12 15 11 18 4 22 2 31 26 27 24 24 MIN. QFF PRESSURE IN HPA 1009.0 1011.5 1003.3 1001.1 999.7 994.9 990.2 994.1 997.8 1011.7 1009.7 1007.7 990.2 DAY 25 20 6 9 22 11 22 11 3 15 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 825.0 825.2 823.4 825.6 823.2 822.8 820.4 821.8 826.5 829.0 829.3 824.5 824.7 MAX. QFE PRESSURE IN HPA 832.0 833.7 828.3 830.0 828.0 829.8 824.0 826.4 830.7 833.0 832.5 830.5 833.7 DAY 12 15 29 17 24 22 11 31 15 27 24 17 MIN. QFE PRESSURE IN HPA 816.3 818.1 813.0 818.1 817.4 816.6 816.2 818.0 820.7 826.0 823.3 813.5 813.0 DAY 25 20 6 9 22 11 15 11 3 14 30 31 MEAN QNH PRESSURE IN HPA 1018.0 1018.2 1016.1 1018.7 1015.8 1015.3 1012.5 1014.2 1019.7 1022.7 1023.1 1017.3 1017.6 MAX. QNH PRESSURE IN HPA 1026.3 1028.3 1021.9 1023.9 1021.5 1023.7 1016.8 1019.6 1024.7 1027.4 1026.8 1024.5 1028.3 DAY 12 15 29 17 24 22 11 31 15 27 24 17 MIN. QNH PRESSURE IN HPA 1007.6 1009.8 1003.7 1009.8 1008.9 1008.0 1007.5 1009.7 1012.9 1019.1 1015.9 1004.3 1003.7 DAY 25 20 6 9 22 11 15 11 3 14 30 31 MEAN QFF PRESSURE IN HPA 1022.8 1023.4 1015.3 1012.2 1006.3 1001.5 997.1 999.2 1008.2 1016.7 1021.3 1023.3 1012.3 MAX. QFF PRESSURE IN HPA 1031.8 1039.8 1025.9 1019.1 1015.6 1008.6 1002.7 1005.7 1014.9 1021.9 1028.9 1038.8 1039.8 DAY 12 15 11 13 24 23 11 31 26 21 26 23 MIN. QFF PRESSURE IN HPA 1009.8 1011.9 1004.9 1001.3 1000.1 994.1 992.3 993.9 998.3 1012.6 1010.0 1011.5 992.3 DAY 24 20 23 9 22 11 27 11 3 1 4 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 825.0 825.0 823.3 825.6 823.3 823.2 820.8 822.4 826.7 829.1 829.3 824.5 824.8 MAX. QFE PRESSURE IN HPA 832.5 833.0 828.6 830.0 829.0 830.0 824.0 827.0 830.6 833.0 832.5 830.5 833.0 DAY 12 15 29 18 24 23 11 31 15 27 24 16 MIN. QFE PRESSURE IN HPA 816.6 817.3 812.8 818.1 817.7 817.6 816.8 818.2 822.0 825.7 822.0 814.8 812.8 DAY 25 20 6 9 22 11 13 11 3 14 30 31 MEAN QNH PRESSURE IN HPA 1018.0 1018.0 1016.0 1018.7 1016.0 1015.8 1012.9 1014.8 1019.9 1022.8 1023.1 1017.4 1017.8 MAX. QNH PRESSURE IN HPA 1026.8 1027.4 1022.2 1023.9 1022.7 1023.9 1016.8 1020.3 1024.6 1027.4 1026.8 1024.5 1027.4 DAY 12 15 29 18 24 23 11 31 15 27 24 16 MIN. QNH PRESSURE IN HPA 1008.0 1008.8 1003.5 1009.8 1009.3 1009.2 1008.2 1009.9 1014.4 1018.8 1014.4 1005.9 1003.5 DAY 25 20 6 9 22 11 13 11 3 14 30 31 MEAN QFF PRESSURE IN HPA 1022.0 1022.5 1014.3 1011.5 1006.3 1001.4 996.9 999.0 1007.3 1015.2 1019.9 1022.1 1011.5 MAX. QFF PRESSURE IN HPA 1032.3 1037.4 1024.6 1019.9 1017.5 1008.6 1002.0 1005.9 1014.9 1020.2 1027.1 1038.3 1038.3 DAY 12 14 10 13 24 23 11 31 26 16 24 23 MIN. QFF PRESSURE IN HPA 1009.8 1009.7 1002.8 1001.3 997.4 994.3 992.3 992.5 999.5 1009.7 1007.3 1009.1 992.3 DAY 24 20 23 9 16 11 23 5 3 1 3 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -9.6 -4.5 -1.1 9.4 12.2 18.9 24.7 21.8 16.9 11.9 6.4 0.3 8.9 MINIMUN AIR TEMPERATURE (C) -15.4 -9.8 -5.9 3.5 6.1 10.0 14.1 11.8 6.6 1.8 0.3 -3.0 1.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 30 23 18 0 0 0 0 0 0 0 4 15 90 DAYS WITH FREEZING MIN.<= 0 31 27 24 6 0 0 0 0 0 4 18 25 135 TEMPERATURE RECORDS LOWEST(C) -29.0 -21.0 -24.8 -1.6 2.0 5.0 11.2 8.0 2.0 -1.4 -7.0 -15.4 -29.0 DAY 29 12 11 3 4 20 12 30 30 29 27 29 MAXIMUM AIR TEMPERATURE (C) -4.3 0.5 4.0 15.3 18.5 26.5 33.8 30.9 26.3 22.0 13.7 4.7 16.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 30 24 0 0 0 0 58 DAYS WITH MAXIMUM TEMP. <= 0 21 14 9 0 0 0 0 0 0 0 0 5 49 TEMPERATURE RECORDS HIGHEST(C) 5.0 7.0 15.4 21.4 26.4 35.0 36.0 35.4 28.4 25.2 19.8 14.0 36.0 DAY 1 19 30 12 29 30 26 6 2 4 20 12 DIF. BETWEEN (MAX.-MIN.) (C) 11.1 10.3 9.9 11.8 12.4 16.5 19.7 19.1 19.7 20.2 13.4 7.7 14.3 MEAN DAILY TEMP. (MDT) (C) -9.8 -4.6 -1.0 9.4 12.3 18.3 24.0 21.4 16.4 11.9 7.0 0.9 8.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 7.3 92.3 34.7 0.0 0.0 0.0 0.0 134.3 HEATING DEG. DAYS(BASE 18 0C) 863.0 656.6 588.4 258.1 177.4 25.3 0.0 6.4 50.5 190.2 329.2 530.8 3675.9 DEWPOINT (MEAN C) -12.9 -8.9 -6.1 0.1 3.8 6.1 8.9 4.5 -1.5 -4.1 -2.5 -4.3 -1.4 MIXING RATIO (G/KG) 1.92 2.53 3.20 4.79 6.26 7.55 8.96 6.57 4.25 3.48 4.02 3.53 4.75 VAPOUR PRESSURE (HPA) 2.53 3.32 4.21 6.29 8.22 9.85 11.66 8.61 5.61 4.61 5.31 4.65 6.24 SATURATION DEF. (HPA) 0.85 1.43 1.97 6.16 6.82 13.36 21.74 19.66 15.30 10.62 4.97 1.87 8.73 RELATIVE HUMIDITY (MEAN %) 78 74 72 57 62 49 40 36 33 36 58 74 56 RELATIVE HUMIDITY (MAX. %) 90 87 88 84 89 79 67 58 59 62 82 90 78 RELATIVE HUMIDITY (MIN. %) 63 58 51 33 36 25 23 20 15 19 32 53 36 RELATIVE HUMIDITY (MEAN% 03UTC) 81 78 79 78 87 77 67 58 59 60 72 85 73 RELATIVE HUMIDITY (MEAN% 09UTC) 71 67 63 42 43 34 29 25 20 23 45 65 44 RELATIVE HUMIDITY (MEAN% 15UTC) 76 72 67 44 49 32 28 24 18 22 45 68 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.7 35.9 92.5 62.5 49.8 3.5 1.6 40.0 0.0 0.0 57.5 38.2 420.2 DAYS WITH PRECIPITATION >=10 0 1 3 2 2 0 0 1 0 0 2 0 11 DAYS WITH PRECIPITATION >= 5 3 3 8 5 3 0 0 1 0 0 2 3 28 DAYS WITH PRECIPITATION >= 1 9 7 12 10 9 1 1 1 0 0 5 11 66 DAYS WITH PRECIPITATION 14 15 15 12 13 6 2 1 0 0 9 14 101 GREATEST DAILY PRECIPITATION 9.0 11.0 21.6 22.8 16.5 1.0 1.0 40.0 0.0 0.0 32.0 7.2 40.0 DAY 30 24 30 27 6 8 8 29 ** ** 25 3 DAY WITH THUNDER STORM 0 0 1 2 6 3 0 1 0 0 1 0 14 DAYS WITH SNOW OR SLEET 16 14 11 1 0 0 0 0 0 0 2 11 55 DAYS WITH DUST 5 7 3 2 5 3 1 3 0 1 3 0 33 WIND DIRECTION (PREVAILING) 225 315 270 225 225 225 135 135 225 270 225 135 225 PREVAILING WIND SPEED(KNOTS) 8.8 9.8 10.1 10.1 11.3 10.4 9.6 11.2 9.6 10.2 14.9 10.0 10.4 PREVAILING WIND PERCENT 5.6 9.9 14.1 20.8 10.1 7.9 9.3 6.9 11.7 6.5 12.1 4.8 8.3 CALMS PERCENT OF WIND 80.6 55.2 62.5 45.8 60.9 69.2 69.0 69.0 72.5 77.0 72.5 77.0 67.7 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 216 213 276 229 237 237 156 103 230 271 209 191 223 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.4 1.8 2.5 0.7 1.3 1.1 0.8 1.1 0.8 2.3 0.5 1.0 WIND STEADINESES (MEAN %) 42.9 30.4 51.4 48.1 17.9 44.8 44.0 26.7 42.3 40.0 67.6 23.8 32.3 WIND SPEED (MEAN KNOTS) 1.4 4.6 3.5 5.2 3.9 2.9 2.5 3.0 2.6 2.0 3.4 2.1 3.1 FASTEST WIND DIRECTION 210 180 270 230 270 210 120 180 240 270 210 120 210 FASTEST WIND SPEED (KNOTS) 19 27 19 29 31 23 19 23 23 19 35 23 35 DAY 3 7 16 22 19 17 28 19 14 4 25 3 DAYS WITH SKY CLEAR (0-2)/8 13 6 11 7 11 22 27 29 29 31 13 8 207 DAYS WITH P.CLOUDY (3-6)/8 10 16 10 14 14 7 3 2 1 0 15 10 102 DAYS WITH CLOUDY (7-8)/8 8 7 10 9 6 1 1 0 0 0 2 13 57 DAYS WITH VISIBILITY =< 2 KM 16 7 7 0 5 1 0 0 0 0 2 7 45 DURATION OF SUNSHINE HOURS 117.4 128.6 169.6 206.4 223.4 317.5 335.1 320.4 312.1 293.0 182.2 97.4 2703.1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 824.2 822.0 824.0 823.4 825.0 822.9 821.8 824.0 826.9 828.0 828.0 825.2 824.6 MAX. QFE PRESSURE IN HPA 834.1 831.0 834.0 828.0 831.0 829.2 827.0 830.0 831.7 833.0 835.7 831.2 835.7 DAY-HOUR 10- 6 15-21 12- 6 19-18 29- 6 11- 6 6- 6 31- 6 2- 6 29- 6 4- 6 1- 6 MIN. QFE PRESSURE IN HPA 810.0 813.0 814.0 814.2 816.8 817.5 816.0 817.2 823.0 823.0 815.0 820.4 810.0 DAY-HOUR 30-12 10-15 30-12 18- 0 9-15 27-15 19-15 18-15 6-15 6-15 25- 0 3-12 MEAN QNH PRESSURE IN HPA 1017.0 1014.4 1016.8 1016.0 1018.0 1015.4 1014.2 1016.7 1020.3 1021.6 1021.5 1018.2 1017.5 MAX. QNH PRESSURE IN HPA 1028.7 1025.1 1028.6 1021.5 1025.1 1022.9 1020.3 1023.9 1025.9 1027.4 1030.6 1025.3 1030.6 DAY-HOUR 10- 6 15-21 12- 6 19-18 29- 6 11- 6 6- 6 31- 6 2- 6 29- 6 4- 6 1- 6 MIN. QNH PRESSURE IN HPA 1000.2 1003.7 1004.9 1005.1 1008.2 1009.1 1007.3 1008.7 1015.6 1015.6 1006.1 1012.5 1000.2 DAY-HOUR 30-12 10-15 30-12 18- 0 9-15 27-15 19-15 18-15 6-15 6-15 25- 0 3-12 MEAN QFF PRESSURE IN HPA 1027.6 1020.6 1020.5 1011.4 1011.2 1003.8 998.5 1003.3 1010.5 1015.4 1019.3 1020.6 1013.6 MAX. QFF PRESSURE IN HPA 1051.2 1036.2 1043.9 1021.4 1019.8 1012.1 1005.5 1015.0 1016.7 1024.5 1029.7 1034.5 1051.2 DAY-HOUR 10- 6 12-18 12- 6 19-21 2-18 11- 3 6- 3 31- 6 2- 3 29- 3 18- 6 29- 3 MIN. QFF PRESSURE IN HPA 1009.5 1001.1 999.7 999.1 1000.5 995.3 990.4 993.1 1002.5 1008.5 1001.5 1009.9 990.4 DAY-HOUR 16-21 24- 9 30-12 17-21 9-15 27-12 19-12 1-12 25- 0 6-12 25- 0 14-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 823.9 821.8 823.8 823.2 824.9 823.0 822.1 824.0 827.0 828.2 827.9 825.1 824.6 MAX. QFE PRESSURE IN HPA 834.0 831.0 832.0 828.0 829.0 828.4 826.1 829.0 830.0 832.2 834.4 830.5 834.4 DAY 10 16 12 21 15 11 6 31 2 30 4 11 MIN. QFE PRESSURE IN HPA 813.6 815.4 814.0 814.2 818.0 819.0 818.0 818.7 824.2 825.0 815.0 822.0 813.6 DAY 31 11 31 18 4 17 19 1 25 7 25 3 MEAN QNH PRESSURE IN HPA 1016.6 1014.1 1016.5 1015.8 1017.8 1015.5 1014.5 1016.8 1020.3 1021.8 1021.4 1018.1 1017.4 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1026.3 1021.5 1022.7 1022.0 1019.3 1022.7 1023.9 1026.5 1029.1 1024.5 1029.1 DAY 10 16 12 21 15 11 6 31 2 30 4 11 MIN. QNH PRESSURE IN HPA 1004.4 1006.6 1004.9 1005.1 1009.7 1010.8 1009.7 1010.5 1017.0 1018.0 1006.1 1014.4 1004.4 DAY 31 11 31 18 4 17 19 1 25 7 25 3 MEAN QFF PRESSURE IN HPA 1026.4 1019.8 1019.7 1011.1 1010.9 1004.2 998.8 1003.0 1010.1 1014.9 1018.3 1019.7 1013.1 MAX. QFF PRESSURE IN HPA 1046.5 1034.8 1041.0 1020.7 1018.8 1010.8 1003.5 1013.8 1015.4 1020.8 1026.3 1032.5 1046.5 DAY 10 16 12 20 15 11 6 31 30 30 18 29 MIN. QFF PRESSURE IN HPA 1010.0 1007.0 1002.8 999.4 1005.4 996.5 993.3 995.2 1002.5 1010.0 1001.5 1010.0 993.3 DAY 17 21 31 18 18 17 19 2 25 6 25 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 824.1 821.8 824.0 823.4 825.3 823.4 822.6 824.7 827.5 828.4 828.2 825.2 824.9 MAX. QFE PRESSURE IN HPA 833.8 830.0 832.0 828.0 830.0 828.8 826.9 829.0 831.0 832.0 834.6 830.0 834.6 DAY 10 16 12 20 29 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 815.0 815.5 814.3 815.3 818.0 819.5 819.0 819.1 824.5 825.1 817.0 821.8 814.3 DAY 31 24 31 18 4 17 19 1 25 7 25 3 MEAN QNH PRESSURE IN HPA 1016.8 1014.2 1016.8 1016.1 1018.3 1016.0 1015.1 1017.6 1020.9 1022.0 1021.7 1018.2 1017.8 MAX. QNH PRESSURE IN HPA 1028.4 1023.9 1026.3 1021.5 1023.9 1022.5 1020.2 1022.7 1025.1 1026.3 1029.3 1023.9 1029.3 DAY 10 16 12 20 29 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1006.1 1006.7 1005.3 1006.5 1009.7 1011.4 1010.8 1011.0 1017.4 1018.1 1008.5 1014.2 1005.3 DAY 31 24 31 18 4 17 19 1 25 7 25 3 MEAN QFF PRESSURE IN HPA 1028.0 1021.0 1021.3 1012.4 1012.4 1005.2 1000.7 1005.3 1012.5 1017.5 1020.3 1021.2 1014.8 MAX. QFF PRESSURE IN HPA 1048.7 1036.1 1041.9 1021.0 1019.7 1012.1 1005.5 1014.8 1016.7 1024.5 1029.1 1034.5 1048.7 DAY 10 16 12 20 14 11 6 31 2 29 4 29 MIN. QFF PRESSURE IN HPA 1012.6 1006.0 1004.3 1002.2 1006.1 997.7 995.1 997.0 1004.6 1013.0 1004.3 1012.6 995.1 DAY 17 24 30 18 9 17 19 1 25 7 25 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 825.1 822.7 824.8 824.2 826.0 823.8 823.0 825.3 828.2 829.3 829.1 826.2 825.6 MAX. QFE PRESSURE IN HPA 834.1 829.9 834.0 828.0 831.0 829.2 827.0 830.0 831.7 833.0 835.7 831.2 835.7 DAY 10 16 12 20 29 11 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 816.5 815.5 815.2 817.0 819.2 820.2 818.7 820.0 825.2 826.4 817.0 823.0 815.2 DAY 30 24 31 18 4 27 19 1 17 7 25 3 MEAN QNH PRESSURE IN HPA 1018.0 1015.2 1017.8 1017.0 1019.1 1016.5 1015.6 1018.3 1021.7 1023.1 1022.8 1019.4 1018.7 MAX. QNH PRESSURE IN HPA 1028.7 1023.8 1028.6 1021.5 1025.1 1022.9 1020.3 1023.9 1025.9 1027.4 1030.6 1025.3 1030.6 DAY 10 16 12 20 29 11 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1007.9 1006.7 1006.3 1008.5 1011.1 1012.3 1010.5 1012.0 1018.2 1019.6 1008.5 1015.6 1006.3 DAY 30 24 31 18 4 27 19 1 17 7 25 3 MEAN QFF PRESSURE IN HPA 1030.0 1022.1 1022.1 1012.5 1012.4 1004.6 999.9 1004.6 1012.0 1017.0 1021.2 1022.3 1015.0 MAX. QFF PRESSURE IN HPA 1051.2 1036.1 1043.9 1020.6 1019.0 1011.4 1004.4 1015.0 1016.7 1024.1 1029.7 1034.3 1051.2 DAY 10 16 12 20 14 11 13 31 2 29 18 29 MIN. QFF PRESSURE IN HPA 1015.0 1006.1 1004.5 1004.7 1004.7 998.3 995.4 995.3 1007.2 1012.3 1005.2 1013.4 995.3 DAY 16 24 30 18 9 27 19 1 25 6 25 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 824.5 822.3 824.5 823.6 825.1 823.1 822.0 824.1 827.2 828.1 828.1 825.2 824.8 MAX. QFE PRESSURE IN HPA 834.0 829.0 834.0 827.2 830.0 828.7 826.5 828.8 830.5 832.0 834.0 830.5 834.0 DAY 10 16 12 21 29 11 6 31 2 29 4 11 MIN. QFE PRESSURE IN HPA 814.2 813.0 816.0 817.2 819.0 819.2 817.5 819.0 824.6 825.2 816.0 821.0 813.0 DAY 30 24 30 18 4 27 19 1 17 6 25 3 MEAN QNH PRESSURE IN HPA 1017.4 1014.7 1017.4 1016.3 1018.1 1015.7 1014.3 1016.9 1020.5 1021.7 1021.6 1018.2 1017.7 MAX. QNH PRESSURE IN HPA 1028.6 1022.7 1028.6 1020.6 1023.9 1022.3 1019.7 1022.5 1024.5 1026.3 1028.6 1024.5 1028.6 DAY 10 16 12 21 29 11 6 31 2 29 4 11 MIN. QNH PRESSURE IN HPA 1005.1 1003.7 1007.3 1008.7 1010.8 1011.1 1009.1 1010.8 1017.5 1018.2 1007.3 1013.2 1003.7 DAY 30 24 30 18 4 27 19 1 17 6 25 3 MEAN QFF PRESSURE IN HPA 1027.2 1020.3 1020.5 1011.1 1010.8 1003.4 997.6 1002.5 1009.7 1014.5 1018.7 1020.2 1013.0 MAX. QFF PRESSURE IN HPA 1048.1 1033.3 1040.8 1019.7 1018.0 1011.0 1003.2 1012.6 1015.3 1020.9 1026.6 1029.8 1048.1 DAY 10 13 12 19 14 11 13 31 30 30 18 29 MIN. QFF PRESSURE IN HPA 1012.1 1001.1 1000.3 1003.9 1004.7 996.0 992.5 993.4 1004.8 1010.4 1003.6 1010.4 992.5 DAY 16 24 30 18 9 27 31 1 25 5 25 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 823.4 821.3 823.4 822.6 824.2 822.0 820.6 822.7 825.8 826.8 827.0 824.2 823.7 MAX. QFE PRESSURE IN HPA 833.2 828.0 833.0 827.0 828.8 827.0 825.0 828.0 829.0 831.0 832.5 829.0 833.2 DAY 9 15 12 21 14 10 6 31 2 29 4 1 MIN. QFE PRESSURE IN HPA 810.0 813.0 814.0 818.0 818.0 818.0 816.2 817.5 823.2 824.0 815.0 820.4 810.0 DAY 30 24 30 18 9 27 19 1 17 6 25 3 MEAN QNH PRESSURE IN HPA 1016.1 1013.6 1016.0 1015.2 1017.0 1014.3 1012.8 1015.3 1019.0 1020.1 1020.4 1017.0 1016.4 MAX. QNH PRESSURE IN HPA 1027.7 1021.5 1027.4 1020.3 1022.5 1020.3 1018.0 1021.5 1022.7 1025.1 1026.8 1022.7 1027.7 DAY 9 15 12 21 14 10 6 31 2 29 4 1 MIN. QNH PRESSURE IN HPA 1000.2 1003.7 1004.9 1009.7 1009.7 1009.7 1007.5 1009.1 1015.8 1016.8 1006.1 1012.5 1000.2 DAY 30 24 30 18 9 27 19 1 17 6 25 3 MEAN QFF PRESSURE IN HPA 1025.6 1019.2 1019.0 1010.3 1010.2 1002.8 996.8 1001.5 1008.7 1013.2 1017.3 1018.7 1011.9 MAX. QFF PRESSURE IN HPA 1044.9 1031.7 1041.8 1018.4 1018.6 1009.5 1001.9 1012.0 1014.8 1019.3 1024.7 1027.9 1044.9 DAY 10 16 12 19 14 10 6 31 30 29 18 29 MIN. QFF PRESSURE IN HPA 1010.1 1002.6 999.7 1003.7 1004.8 995.3 990.4 993.1 1003.0 1008.5 1003.2 1009.9 990.4 DAY 16 24 30 23 9 27 19 1 25 6 25 14 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 823.9 821.6 823.5 822.5 824.1 821.7 820.4 822.5 825.8 826.9 827.4 824.9 823.8 MAX. QFE PRESSURE IN HPA 834.0 829.2 833.0 826.1 828.9 827.0 824.2 828.0 828.9 831.2 832.5 829.8 834.0 DAY 9 15 12 19 14 10 6 31 2 29 4 11 MIN. QFE PRESSURE IN HPA 810.0 813.0 814.0 817.7 816.8 817.5 816.0 817.2 823.0 823.0 817.0 821.0 810.0 DAY 30 10 30 14 9 27 19 18 6 6 25 19 MEAN QNH PRESSURE IN HPA 1016.7 1013.9 1016.1 1015.0 1016.9 1014.1 1012.5 1014.9 1018.9 1020.2 1020.8 1017.8 1016.5 MAX. QNH PRESSURE IN HPA 1028.6 1022.9 1027.4 1019.3 1022.6 1020.3 1017.0 1021.5 1022.6 1025.3 1026.8 1023.7 1028.6 DAY 9 15 12 19 14 10 6 31 2 29 4 11 MIN. QNH PRESSURE IN HPA 1000.2 1003.7 1004.9 1009.3 1008.2 1009.1 1007.3 1008.7 1015.6 1015.6 1008.5 1013.2 1000.2 DAY 30 10 30 14 9 27 19 18 6 6 25 19 MEAN QFF PRESSURE IN HPA 1027.8 1020.7 1020.4 1011.2 1010.9 1003.2 997.9 1002.7 1010.5 1015.7 1019.5 1020.8 1013.4 MAX. QFF PRESSURE IN HPA 1047.8 1033.4 1041.8 1018.6 1018.9 1010.6 1002.5 1013.1 1015.2 1023.0 1027.7 1032.1 1047.8 DAY 9 16 12 19 14 10 11 31 30 29 18 28 MIN. QFF PRESSURE IN HPA 1010.9 1006.0 1002.2 1001.2 1000.5 995.4 991.5 994.3 1005.6 1010.9 1006.1 1012.1 991.5 DAY 16 24 30 14 9 27 19 1 25 6 25 13 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 824.5 822.4 824.3 823.8 825.3 822.8 821.6 824.0 827.0 828.2 828.1 825.5 824.8 MAX. QFE PRESSURE IN HPA 834.0 830.8 833.4 828.0 830.5 828.4 826.0 829.0 830.0 832.0 834.0 830.5 834.0 DAY 9 15 12 19 14 10 6 31 2 29 4 10 MIN. QFE PRESSURE IN HPA 812.0 815.0 816.2 817.2 820.0 818.2 817.2 818.8 824.4 825.0 818.7 822.0 812.0 DAY 30 10 30 17 9 27 19 18 6 6 25 21 MEAN QNH PRESSURE IN HPA 1017.3 1014.9 1017.1 1016.6 1018.3 1015.4 1014.0 1016.8 1020.4 1021.7 1021.7 1018.6 1017.7 MAX. QNH PRESSURE IN HPA 1028.6 1024.8 1027.9 1021.5 1024.5 1022.0 1019.1 1022.7 1023.9 1026.3 1028.6 1024.5 1028.6 DAY 9 15 12 19 14 10 6 31 2 29 4 10 MIN. QNH PRESSURE IN HPA 1002.5 1006.1 1007.5 1008.7 1012.0 1009.9 1008.7 1010.6 1017.2 1018.0 1010.5 1014.4 1002.5 DAY 30 10 30 17 9 27 19 18 6 6 25 21 MEAN QFF PRESSURE IN HPA 1029.2 1021.8 1021.2 1012.0 1011.6 1003.6 998.5 1003.4 1010.7 1015.8 1020.1 1021.6 1014.1 MAX. QFF PRESSURE IN HPA 1048.7 1036.2 1041.8 1021.4 1019.8 1011.2 1003.1 1013.6 1015.8 1022.9 1028.0 1034.1 1048.7 DAY 9 12 12 19 2 6 6 31 29 29 18 28 MIN. QFF PRESSURE IN HPA 1011.9 1009.1 1004.6 1002.8 1005.1 995.6 992.9 995.2 1006.6 1010.4 1006.7 1012.2 992.9 DAY 16 24 30 17 9 27 31 1 6 5 24 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 824.3 822.2 824.2 823.8 825.4 823.2 822.1 824.5 827.1 828.5 828.2 825.3 824.9 MAX. QFE PRESSURE IN HPA 834.0 831.0 832.2 828.0 830.0 829.0 826.0 829.5 830.0 832.2 834.4 831.0 834.4 DAY 9 15 12 19 14 10 6 31 1 29 3 10 MIN. QFE PRESSURE IN HPA 812.2 815.0 815.4 815.1 819.3 819.0 818.0 819.0 824.6 825.2 818.0 821.5 812.2 DAY 2 24 30 17 3 27 18 18 17 6 24 27 MEAN QNH PRESSURE IN HPA 1017.1 1014.7 1017.0 1016.6 1018.4 1015.8 1014.6 1017.4 1020.4 1022.0 1021.7 1018.3 1017.8 MAX. QNH PRESSURE IN HPA 1028.6 1025.1 1026.5 1021.5 1023.9 1022.7 1019.1 1023.3 1023.9 1026.5 1029.1 1025.1 1029.1 DAY 9 15 12 19 14 10 6 31 1 29 3 10 MIN. QNH PRESSURE IN HPA 1002.8 1006.1 1006.6 1006.2 1011.2 1010.8 1009.7 1010.8 1017.5 1018.2 1009.7 1013.8 1002.8 DAY 2 24 30 17 3 27 18 18 17 6 24 27 MEAN QFF PRESSURE IN HPA 1027.1 1020.4 1020.0 1011.3 1011.0 1003.7 998.1 1003.3 1009.7 1015.0 1018.9 1020.3 1013.2 MAX. QFF PRESSURE IN HPA 1045.4 1034.2 1040.3 1021.4 1019.3 1011.4 1002.6 1013.3 1015.3 1021.2 1026.4 1033.6 1045.4 DAY 9 15 11 19 2 10 11 31 30 29 17 28 MIN. QFF PRESSURE IN HPA 1009.5 1006.2 1002.3 999.1 1004.0 995.8 992.6 996.1 1004.7 1010.8 1004.9 1010.6 992.6 DAY 16 24 30 17 31 27 31 18 24 5 24 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.8 -0.2 4.4 10.9 14.6 20.4 24.5 23.9 19.4 11.4 4.8 2.0 11.0 MINIMUN AIR TEMPERATURE (C) -8.2 -4.4 -1.5 4.2 7.1 9.9 13.6 12.5 7.9 2.7 0.5 -2.6 3.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 22 13 6 0 0 0 0 0 0 0 4 8 53 DAYS WITH FREEZING MIN.<= 0 30 26 21 0 0 0 0 0 0 5 14 27 123 TEMPERATURE RECORDS LOWEST(C) -20.4 -12.0 -9.2 0.4 1.0 6.0 10.2 10.0 2.0 -2.2 -9.2 -7.6 -20.4 DAY 22 17 23 10 1 6 14 13 25 9 30 13 MAXIMUM AIR TEMPERATURE (C) 1.4 5.1 10.6 17.7 21.4 29.0 33.5 33.2 30.3 20.0 10.6 7.9 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 14 31 30 14 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 11 1 0 0 0 0 0 0 0 0 0 0 12 TEMPERATURE RECORDS HIGHEST(C) 9.0 15.2 20.4 24.8 26.0 35.0 36.8 36.0 34.8 27.0 17.2 13.2 36.8 DAY 29 28 31 19 19 30 16 14 5 1 9 28 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 9.5 12.1 13.5 14.3 19.1 19.9 20.7 22.4 17.3 10.1 10.5 14.9 MEAN DAILY TEMP. (MDT) (C) -3.4 0.3 4.6 11.0 14.3 19.4 23.6 22.8 19.1 11.3 5.5 2.7 10.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 10.2 80.1 57.2 5.6 0.0 0.0 0.0 153.1 HEATING DEG. DAYS(BASE 18 0C) 663.7 495.4 416.4 211.6 118.4 11.6 0.0 0.0 14.8 206.3 373.6 474.5 2986.2 DEWPOINT (MEAN C) -8.0 -5.2 -5.6 0.4 4.2 6.0 10.2 8.5 5.0 1.5 -0.3 -1.3 1.3 MIXING RATIO (G/KG) 2.68 3.27 3.21 4.92 6.42 7.24 9.75 8.62 6.83 5.27 4.70 4.26 5.60 VAPOUR PRESSURE (HPA) 3.54 4.30 4.23 6.46 8.42 9.47 12.69 11.27 8.96 6.96 6.20 5.64 7.35 SATURATION DEF. (HPA) 1.45 2.00 4.69 7.35 9.13 16.38 20.24 20.50 16.07 7.56 2.97 1.70 9.17 RELATIVE HUMIDITY (MEAN %) 75 72 53 53 54 43 44 41 43 56 73 82 57 RELATIVE HUMIDITY (MAX. %) 88 88 78 79 84 71 69 68 72 86 91 95 81 RELATIVE HUMIDITY (MIN. %) 56 50 32 32 32 24 26 24 24 32 50 58 37 RELATIVE HUMIDITY (MEAN% 03UTC) 83 84 72 75 81 71 69 68 71 84 84 94 78 RELATIVE HUMIDITY (MEAN% 09UTC) 63 62 42 40 38 29 31 29 29 38 62 70 44 RELATIVE HUMIDITY (MEAN% 15UTC) 71 64 39 40 38 27 30 27 27 40 66 73 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.7 46.8 57.5 29.3 29.0 2.0 0.0 0.0 0.8 17.4 72.9 17.0 299.4 DAYS WITH PRECIPITATION >=10 1 3 3 1 0 0 0 0 0 1 2 0 11 DAYS WITH PRECIPITATION >= 5 2 4 3 2 2 0 0 0 0 1 5 2 21 DAYS WITH PRECIPITATION >= 1 6 7 7 6 7 1 0 0 0 2 12 3 51 DAYS WITH PRECIPITATION 11 11 9 7 9 1 0 1 1 5 12 4 71 GREATEST DAILY PRECIPITATION 10.0 11.0 21.0 11.0 9.8 2.0 0.0 0.0 0.8 12.0 19.0 7.8 21.0 DAY 7 3 8 26 11 1 ** ** 26 29 26 15 DAY WITH THUNDER STORM 0 1 0 0 2 0 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 9 9 2 0 0 0 0 0 0 0 1 2 23 DAYS WITH DUST 1 0 0 2 4 2 0 2 0 0 0 0 11 WIND DIRECTION (PREVAILING) 225 270 225 270 270 225 135 90 225 45 180 45 225 PREVAILING WIND SPEED(KNOTS) 9.9 8.5 11.3 11.6 12.9 8.6 10.5 9.9 7.0 7.7 8.4 5.2 9.6 PREVAILING WIND PERCENT 8.5 7.1 11.3 13.3 10.5 11.7 8.9 4.0 6.7 5.6 7.1 2.0 6.9 CALMS PERCENT OF WIND 79.0 75.4 60.9 53.3 63.7 70.4 74.2 76.6 84.6 78.6 77.1 90.3 73.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 214 273 232 236 245 246 126 131 246 17 224 27 231 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.8 1.6 2.8 2.3 1.3 1.3 0.5 0.6 0.3 1.3 0.1 0.8 WIND STEADINESES (MEAN %) 33.3 40.0 38.1 58.3 62.2 52.0 59.1 26.3 50.0 16.7 56.5 14.3 33.3 WIND SPEED (MEAN KNOTS) 1.8 2.0 4.2 4.8 3.7 2.5 2.2 1.9 1.2 1.8 2.3 0.7 2.4 FASTEST WIND DIRECTION 210 90 270 280 260 270 90 70 270 270 210 270 270 FASTEST WIND SPEED (KNOTS) 23 19 29 29 29 19 23 17 19 19 29 14 29 DAY 28 2 8 17 15 3 14 2 26 1 11 5 DAYS WITH SKY CLEAR (0-2)/8 19 11 10 9 9 28 27 28 29 24 9 10 213 DAYS WITH P.CLOUDY (3-6)/8 5 10 14 13 16 2 4 3 1 4 12 12 96 DAYS WITH CLOUDY (7-8)/8 7 7 7 8 6 0 0 0 0 3 9 9 56 DAYS WITH VISIBILITY =< 2 KM 8 2 0 0 0 0 0 0 0 0 10 8 28 DURATION OF SUNSHINE HOURS 166.8 152.5 225.0 200.3 240.0 380.4 353.3 340.8 318.9 248.5 134.7 ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 825.4 824.1 824.1 824.6 825.4 823.3 822.5 824.0 825.9 830.2 826.9 829.1 825.5 MAX. QFE PRESSURE IN HPA 832.2 830.9 832.2 832.0 829.8 830.4 827.3 827.5 831.4 836.0 834.2 836.7 836.7 DAY-HOUR 6- 6 9- 9 30- 6 16- 6 24-18 22- 6 27- 6 31- 6 16- 6 17- 6 21- 6 26- 6 MIN. QFE PRESSURE IN HPA 812.0 814.0 815.0 818.9 819.0 817.5 815.4 819.0 821.0 822.8 815.4 820.0 812.0 DAY-HOUR 8- 3 3-12 5-12 20-15 6-12 3-15 11-15 13-15 3-12 28-12 11- 0 4-12 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1016.8 1017.5 1018.4 1016.0 1015.0 1016.8 1019.0 1024.1 1020.2 1022.8 1018.5 MAX. QNH PRESSURE IN HPA 1026.5 1025.0 1026.5 1026.3 1023.7 1024.4 1020.7 1020.9 1025.5 1031.0 1028.9 1031.8 1031.8 DAY-HOUR 6- 6 9- 9 30- 6 16- 6 24-18 22- 6 27- 6 31- 6 16- 6 17- 6 21- 6 26- 6 MIN. QNH PRESSURE IN HPA 1002.5 1004.9 1006.1 1010.7 1010.8 1009.1 1006.6 1010.8 1013.2 1015.3 1006.6 1012.0 1002.5 DAY-HOUR 8- 3 3-12 5-12 20-15 6-12 3-15 11-15 13-15 3-12 28-12 11- 0 4-12 MEAN QFF PRESSURE IN HPA 1024.3 1019.8 1016.1 1011.8 1009.9 1003.4 999.4 1001.8 1007.1 1018.2 1019.1 1023.9 1012.9 MAX. QFF PRESSURE IN HPA 1037.9 1031.2 1029.9 1019.0 1018.8 1014.8 1006.1 1007.0 1015.1 1025.9 1030.4 1033.9 1037.9 DAY-HOUR 19-18 9-18 23- 3 16- 6 9- 3 22- 6 27- 3 29- 3 30- 6 18- 3 21- 6 26-18 MIN. QFF PRESSURE IN HPA 1003.2 1004.6 1003.9 999.4 1001.2 996.5 988.8 995.6 998.4 1010.1 1000.1 1010.8 988.8 DAY-HOUR 9- 0 3-12 8- 3 20-15 2-12 30-12 11-15 13-12 3-12 28- 9 11- 0 4-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.3 823.9 824.0 824.7 825.2 823.5 822.8 824.3 826.2 830.4 826.7 829.1 825.5 MAX. QFE PRESSURE IN HPA 831.0 829.0 831.0 830.4 829.0 829.0 826.5 826.5 831.0 835.0 833.0 835.4 835.4 DAY 6 9 31 17 9 22 28 31 16 18 21 27 MIN. QFE PRESSURE IN HPA 814.0 815.4 817.7 820.2 820.4 820.0 817.8 821.0 822.5 825.1 815.4 823.0 814.0 DAY 8 3 8 27 6 4 12 13 3 28 11 5 MEAN QNH PRESSURE IN HPA 1018.3 1016.7 1016.8 1017.6 1018.2 1016.2 1015.3 1017.1 1019.4 1024.4 1020.0 1022.9 1018.6 MAX. QNH PRESSURE IN HPA 1025.1 1022.7 1025.1 1024.4 1022.7 1022.7 1019.7 1019.7 1025.1 1029.8 1027.4 1030.3 1030.3 DAY 6 9 31 17 9 22 28 31 16 18 21 27 MIN. QNH PRESSURE IN HPA 1004.9 1006.6 1009.3 1012.3 1012.5 1012.0 1009.4 1013.2 1015.0 1018.1 1006.6 1015.6 1004.9 DAY 8 3 8 27 6 4 12 13 3 28 11 5 MEAN QFF PRESSURE IN HPA 1023.3 1018.9 1015.7 1011.5 1009.7 1003.9 999.9 1001.9 1007.0 1017.8 1018.0 1023.1 1012.6 MAX. QFF PRESSURE IN HPA 1033.0 1027.4 1026.6 1017.3 1018.0 1012.2 1004.3 1005.0 1013.5 1023.2 1028.3 1029.1 1033.0 DAY 20 9 23 17 9 23 22 19 16 18 30 27 MIN. QFF PRESSURE IN HPA 1003.2 1006.8 1004.4 1005.0 1002.5 998.4 992.5 999.1 1000.2 1010.7 1000.1 1014.9 992.5 DAY 9 3 8 21 31 27 11 13 3 28 11 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.3 824.1 824.3 824.8 825.5 824.0 823.1 824.7 826.5 830.7 827.0 829.1 825.7 MAX. QFE PRESSURE IN HPA 831.0 829.0 831.2 830.8 829.0 830.0 827.0 827.0 831.0 835.0 833.0 835.0 835.0 DAY 6 9 31 17 9 22 27 7 16 18 21 26 MIN. QFE PRESSURE IN HPA 812.0 815.0 817.2 820.0 821.0 821.0 818.0 821.5 822.6 824.9 816.0 822.8 812.0 DAY 8 3 8 26 6 3 11 13 3 28 11 5 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1017.1 1017.7 1018.5 1016.7 1015.7 1017.5 1019.8 1024.7 1020.3 1022.9 1018.8 MAX. QNH PRESSURE IN HPA 1025.1 1022.7 1025.3 1024.8 1022.7 1023.9 1020.3 1020.3 1025.1 1029.8 1027.4 1029.8 1029.8 DAY 6 9 31 17 9 22 27 7 16 18 21 26 MIN. QNH PRESSURE IN HPA 1002.5 1006.1 1008.7 1012.0 1013.2 1013.2 1009.7 1013.8 1015.1 1017.8 1007.3 1015.3 1002.5 DAY 8 3 8 26 6 3 11 13 3 28 11 5 MEAN QFF PRESSURE IN HPA 1024.9 1020.5 1017.0 1012.8 1011.0 1005.0 1001.2 1004.1 1009.4 1020.3 1019.7 1024.8 1014.2 MAX. QFF PRESSURE IN HPA 1035.2 1029.0 1029.9 1019.0 1018.8 1013.2 1006.1 1007.0 1015.0 1025.9 1029.8 1031.6 1035.2 DAY 22 9 23 1 9 22 27 29 16 18 30 26 MIN. QFF PRESSURE IN HPA 1004.3 1007.3 1003.9 1005.4 1003.3 1000.0 991.6 1000.5 1002.8 1011.6 1001.4 1016.6 991.6 DAY 8 3 8 20 31 26 11 14 3 28 11 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.3 825.0 825.1 825.6 826.0 824.3 823.6 825.3 827.1 831.4 827.9 829.9 826.5 MAX. QFE PRESSURE IN HPA 832.2 830.2 832.2 832.0 829.0 830.4 827.3 827.5 831.4 836.0 834.2 836.7 836.7 DAY 6 9 30 16 9 22 27 31 16 17 21 26 MIN. QFE PRESSURE IN HPA 815.0 816.0 819.0 821.0 821.0 821.0 818.4 822.0 823.2 825.0 817.5 822.0 815.0 DAY 8 3 12 26 6 3 11 13 3 28 11 4 MEAN QNH PRESSURE IN HPA 1019.6 1018.0 1018.1 1018.7 1019.2 1017.1 1016.3 1018.3 1020.5 1025.6 1021.4 1023.8 1019.7 MAX. QNH PRESSURE IN HPA 1026.5 1024.1 1026.5 1026.3 1022.7 1024.4 1020.7 1020.9 1025.5 1031.0 1028.9 1031.8 1031.8 DAY 6 9 30 16 9 22 27 31 16 17 21 26 MIN. QNH PRESSURE IN HPA 1006.1 1007.3 1010.8 1013.2 1013.2 1013.2 1010.1 1014.4 1015.8 1018.0 1009.1 1014.4 1006.1 DAY 8 3 12 26 6 3 11 13 3 28 11 4 MEAN QFF PRESSURE IN HPA 1026.2 1021.6 1017.6 1012.8 1010.5 1004.3 1000.1 1003.1 1008.5 1019.6 1020.7 1025.9 1014.2 MAX. QFF PRESSURE IN HPA 1037.5 1030.8 1029.6 1019.0 1017.1 1014.8 1004.1 1005.7 1015.1 1025.0 1030.4 1033.8 1037.5 DAY 21 9 23 16 9 22 21 28 30 18 21 26 MIN. QFF PRESSURE IN HPA 1007.6 1009.0 1009.4 1006.0 1003.8 998.9 993.2 999.4 1002.2 1010.3 1001.8 1015.4 993.2 DAY 8 3 8 20 31 25 11 11 3 28 11 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 825.8 824.6 824.4 824.8 825.6 823.6 822.7 824.3 826.0 830.3 827.2 829.1 825.7 MAX. QFE PRESSURE IN HPA 832.0 830.9 832.0 831.4 828.4 829.8 826.7 826.7 830.0 834.5 834.0 835.7 835.7 DAY 27 9 31 16 9 22 27 30 16 17 21 26 MIN. QFE PRESSURE IN HPA 815.0 815.0 818.8 820.0 820.0 819.0 817.2 820.6 822.0 823.8 817.0 821.0 815.0 DAY 8 3 12 12 6 3 11 13 3 28 11 4 MEAN QNH PRESSURE IN HPA 1018.9 1017.5 1017.3 1017.7 1018.6 1016.3 1015.2 1017.1 1019.1 1024.2 1020.6 1022.9 1018.8 MAX. QNH PRESSURE IN HPA 1026.3 1025.0 1026.3 1025.5 1022.0 1023.7 1020.0 1020.0 1023.9 1029.2 1028.6 1030.6 1030.6 DAY 27 9 31 16 9 22 27 30 16 17 21 26 MIN. QNH PRESSURE IN HPA 1006.1 1006.1 1010.6 1012.0 1012.0 1010.8 1008.7 1012.7 1014.4 1016.5 1008.5 1013.2 1006.1 DAY 8 3 12 12 6 3 11 13 3 28 11 4 MEAN QFF PRESSURE IN HPA 1024.2 1020.0 1016.0 1011.5 1009.8 1003.1 998.8 1001.0 1006.1 1017.3 1019.0 1023.6 1012.5 MAX. QFF PRESSURE IN HPA 1035.8 1030.5 1029.2 1017.1 1016.0 1013.7 1003.4 1003.1 1012.6 1021.4 1028.8 1030.0 1035.8 DAY 20 9 23 16 9 22 22 18 16 20 21 26 MIN. QFF PRESSURE IN HPA 1007.0 1006.4 1007.8 1002.9 1002.6 997.1 990.4 997.7 999.8 1010.1 1001.6 1012.7 990.4 DAY 8 3 5 20 2 25 11 14 3 28 11 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 824.5 823.1 823.0 823.6 824.7 822.4 821.4 822.9 824.6 828.9 826.2 828.1 824.5 MAX. QFE PRESSURE IN HPA 830.2 829.0 830.0 830.4 828.0 828.1 825.8 825.5 828.2 833.0 832.8 834.5 834.5 DAY 27 9 30 16 18 22 27 8 16 17 21 26 MIN. QFE PRESSURE IN HPA 814.0 814.0 815.0 819.0 819.0 818.0 816.0 819.4 821.0 822.8 819.0 820.0 814.0 DAY 8 3 5 12 6 3 11 13 3 28 10 4 MEAN QNH PRESSURE IN HPA 1017.3 1015.7 1015.6 1016.3 1017.7 1014.9 1013.7 1015.4 1017.5 1022.6 1019.4 1021.6 1017.3 MAX. QNH PRESSURE IN HPA 1024.1 1022.7 1023.9 1024.4 1021.5 1021.6 1018.9 1018.6 1021.8 1027.4 1027.2 1029.2 1029.2 DAY 27 9 30 16 18 22 27 8 16 17 21 26 MIN. QNH PRESSURE IN HPA 1004.9 1004.9 1006.1 1010.8 1010.8 1009.7 1007.3 1011.3 1013.2 1015.3 1010.8 1012.0 1004.9 DAY 8 3 5 12 6 3 11 13 3 28 10 4 MEAN QFF PRESSURE IN HPA 1022.2 1017.8 1014.4 1010.2 1009.1 1002.3 998.1 1000.0 1005.0 1016.1 1017.5 1021.7 1011.2 MAX. QFF PRESSURE IN HPA 1033.0 1026.7 1025.1 1016.0 1014.7 1011.0 1002.6 1003.2 1011.5 1019.9 1027.6 1028.3 1033.0 DAY 19 9 23 16 14 22 22 30 30 17 21 26 MIN. QFF PRESSURE IN HPA 1004.6 1004.6 1004.1 1000.1 1001.2 996.5 989.2 995.6 998.4 1010.2 1004.0 1010.8 989.2 DAY 8 3 3 20 2 30 11 13 3 3 10 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 824.9 823.5 823.1 823.7 824.6 822.1 821.2 822.6 824.5 829.1 826.3 828.5 824.5 MAX. QFE PRESSURE IN HPA 830.0 829.0 829.7 830.4 828.0 827.6 825.0 825.2 828.0 833.0 832.3 834.7 834.7 DAY 26 9 30 16 18 22 29 30 16 17 21 26 MIN. QFE PRESSURE IN HPA 815.0 815.0 816.2 818.9 819.0 817.5 815.4 819.0 821.3 823.0 818.4 822.0 815.0 DAY 8 3 5 20 6 3 11 13 3 28 13 4 MEAN QNH PRESSURE IN HPA 1017.9 1016.2 1015.7 1016.4 1017.5 1014.5 1013.4 1015.1 1017.3 1022.8 1019.5 1022.1 1017.4 MAX. QNH PRESSURE IN HPA 1023.9 1022.7 1023.5 1024.4 1021.5 1021.0 1018.0 1018.2 1021.5 1027.4 1026.6 1029.5 1029.5 DAY 26 9 30 16 18 22 29 30 16 17 21 26 MIN. QNH PRESSURE IN HPA 1006.1 1006.1 1007.5 1010.7 1010.8 1009.1 1006.6 1010.8 1013.6 1015.6 1010.1 1014.4 1006.1 DAY 8 3 5 20 6 3 11 13 3 28 13 4 MEAN QFF PRESSURE IN HPA 1024.3 1019.5 1015.5 1011.4 1010.0 1002.6 998.8 1001.5 1006.9 1018.5 1018.9 1023.8 1012.6 MAX. QFF PRESSURE IN HPA 1035.6 1028.5 1025.4 1018.0 1015.0 1010.0 1004.1 1004.7 1013.3 1022.9 1028.2 1030.8 1035.6 DAY 20 9 23 16 14 22 30 28 30 17 21 26 MIN. QFF PRESSURE IN HPA 1006.4 1007.5 1006.8 999.4 1003.8 997.3 988.8 997.1 1000.5 1010.3 1005.4 1015.4 988.8 DAY 8 3 21 20 31 26 11 13 1 28 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 825.7 824.4 824.2 825.0 825.6 823.2 822.5 824.0 825.9 830.3 827.1 829.3 825.6 MAX. QFE PRESSURE IN HPA 831.0 830.2 831.0 831.3 829.8 828.3 826.2 826.7 830.2 834.7 833.2 836.1 836.1 DAY 6 9 30 16 24 22 30 28 15 17 21 26 MIN. QFE PRESSURE IN HPA 815.0 816.4 817.2 820.0 820.8 819.0 817.2 821.0 822.5 824.0 817.5 823.0 815.0 DAY 8 2 5 25 6 3 11 12 2 28 13 4 MEAN QNH PRESSURE IN HPA 1018.8 1017.2 1017.1 1017.9 1018.6 1015.8 1015.0 1016.7 1019.1 1024.2 1020.5 1023.0 1018.7 MAX. QNH PRESSURE IN HPA 1025.1 1024.1 1025.1 1025.4 1023.7 1021.9 1019.4 1020.0 1024.1 1029.5 1027.7 1031.1 1031.1 DAY 6 9 30 16 24 22 30 28 15 17 21 26 MIN. QNH PRESSURE IN HPA 1006.1 1007.8 1008.7 1012.0 1013.0 1010.8 1008.7 1013.2 1015.0 1016.8 1009.1 1015.6 1006.1 DAY 8 2 5 25 6 3 11 12 2 28 13 4 MEAN QFF PRESSURE IN HPA 1025.3 1020.6 1016.6 1012.1 1010.0 1003.1 999.1 1001.7 1007.4 1018.3 1019.9 1025.0 1013.3 MAX. QFF PRESSURE IN HPA 1037.9 1031.2 1026.4 1018.7 1016.6 1012.0 1004.1 1006.1 1014.0 1023.2 1029.0 1033.9 1037.9 DAY 19 9 23 16 8 22 30 18 30 17 21 26 MIN. QFF PRESSURE IN HPA 1005.6 1007.5 1006.7 1006.5 1004.8 996.7 991.9 997.7 1000.9 1011.2 1003.6 1016.6 991.9 DAY 8 2 3 25 30 25 11 11 2 1 10 5 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 825.5 824.4 824.4 825.1 825.7 823.6 823.1 824.5 826.3 830.5 827.0 829.4 825.8 MAX. QFE PRESSURE IN HPA 831.0 830.0 831.0 831.2 829.0 829.0 827.0 827.0 831.0 835.0 833.2 836.0 836.0 DAY 26 9 30 16 8 22 27 18 15 17 21 26 MIN. QFE PRESSURE IN HPA 815.0 817.3 817.2 820.5 821.5 819.8 817.8 821.0 823.0 826.0 817.6 823.0 815.0 DAY 8 3 21 25 12 3 11 12 2 28 13 4 MEAN QNH PRESSURE IN HPA 1018.6 1017.3 1017.3 1018.0 1018.8 1016.3 1015.7 1017.3 1019.5 1024.5 1020.4 1023.2 1018.9 MAX. QNH PRESSURE IN HPA 1025.1 1023.9 1025.1 1025.3 1022.7 1022.7 1020.3 1020.3 1025.1 1029.8 1027.7 1031.0 1031.0 DAY 26 9 30 16 8 22 27 18 15 17 21 26 MIN. QNH PRESSURE IN HPA 1006.1 1008.8 1008.7 1012.6 1013.8 1011.8 1009.4 1013.2 1015.6 1019.1 1009.2 1015.6 1006.1 DAY 8 3 21 25 12 3 11 12 2 28 13 4 MEAN QFF PRESSURE IN HPA 1023.8 1019.7 1016.0 1011.9 1009.8 1003.2 999.6 1001.5 1007.0 1017.7 1019.0 1023.9 1012.8 MAX. QFF PRESSURE IN HPA 1034.8 1029.2 1026.5 1016.8 1018.0 1012.8 1003.9 1005.7 1012.8 1023.0 1028.6 1030.9 1034.8 DAY 21 9 22 17 8 22 21 18 15 17 29 26 MIN. QFF PRESSURE IN HPA 1004.8 1008.5 1006.6 1004.6 1004.2 996.7 991.8 997.7 1001.2 1011.1 1003.7 1015.7 991.8 DAY 8 2 7 20 30 26 10 10 8 1 10 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.9 1.0 5.8 11.8 15.4 20.8 25.5 24.8 17.7 11.9 6.9 -2.2 11.7 MINIMUN AIR TEMPERATURE (C) -3.1 -3.9 -0.8 4.0 6.9 9.7 13.9 12.6 7.3 4.8 2.0 -7.1 3.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 15 11 5 1 0 0 0 0 0 0 2 19 53 DAYS WITH FREEZING MIN.<= 0 24 23 17 3 0 0 0 0 0 3 11 29 110 TEMPERATURE RECORDS LOWEST(C) -9.0 -14.0 -6.4 -4.2 1.4 6.0 7.0 8.2 1.8 -1.8 -5.2 -23.0 -23.0 DAY 28 20 15 5 7 18 1 25 23 12 12 7 MAXIMUM AIR TEMPERATURE (C) 6.1 6.9 12.6 19.7 22.7 29.9 35.3 35.9 27.4 19.7 12.9 3.5 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 18 30 31 5 0 0 0 85 DAYS WITH MAXIMUM TEMP. <= 0 4 1 0 0 0 0 0 0 0 0 0 6 11 TEMPERATURE RECORDS HIGHEST(C) 14.4 12.2 20.0 25.2 31.0 33.4 39.0 38.2 33.4 24.8 17.4 10.4 39.0 DAY 3 27 31 21 31 10 25 1 2 1 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 10.8 13.4 15.7 15.8 20.2 21.4 23.3 20.1 14.9 10.9 10.6 15.5 MEAN DAILY TEMP. (MDT) (C) 1.5 1.5 5.9 11.9 14.8 19.8 24.6 24.3 17.3 12.2 7.4 -1.8 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.3 7.6 114.9 102.2 3.3 0.0 0.0 0.0 228.3 HEATING DEG. DAYS(BASE 18 0C) 512.5 461.8 375.8 183.8 105.7 7.6 0.0 0.0 42.7 178.4 316.5 613.6 2798.4 DEWPOINT (MEAN C) -2.2 -4.5 -0.9 3.4 5.4 8.2 12.9 8.5 2.4 2.8 0.5 -6.6 2.5 MIXING RATIO (G/KG) 4.07 3.44 4.46 6.11 7.03 8.47 11.73 9.01 5.72 5.84 4.96 3.08 6.16 VAPOUR PRESSURE (HPA) 5.36 4.53 5.86 8.02 9.21 11.03 15.16 11.70 7.53 7.72 6.54 4.07 8.06 SATURATION DEF. (HPA) 1.51 2.39 3.90 6.80 9.46 15.62 20.00 22.76 14.57 6.99 3.81 1.58 9.12 RELATIVE HUMIDITY (MEAN %) 82 70 67 61 57 49 49 38 39 59 67 74 59 RELATIVE HUMIDITY (MAX. %) 95 90 92 91 90 79 78 62 65 82 85 90 83 RELATIVE HUMIDITY (MIN. %) 61 48 39 35 31 27 30 24 23 33 45 54 38 RELATIVE HUMIDITY (MEAN% 03UTC) 91 86 87 90 85 77 77 60 63 80 79 82 80 RELATIVE HUMIDITY (MEAN% 09UTC) 72 54 47 46 36 34 37 30 28 44 57 67 46 RELATIVE HUMIDITY (MEAN% 15UTC) 74 57 50 42 40 30 34 25 26 43 57 66 45 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 34.4 54.6 33.8 51.2 22.2 0.0 2.0 0.0 0.7 51.1 186.1 45.2 481.3 DAYS WITH PRECIPITATION >=10 1 1 0 2 0 0 0 0 0 3 6 0 13 DAYS WITH PRECIPITATION >= 5 3 4 4 4 2 0 0 0 0 4 9 5 35 DAYS WITH PRECIPITATION >= 1 9 5 7 8 5 0 1 0 0 9 14 10 68 DAYS WITH PRECIPITATION 12 5 12 10 5 0 1 0 3 14 16 12 90 GREATEST DAILY PRECIPITATION 13.5 31.0 9.7 14.0 9.4 0.0 2.0 0.0 0.3 11.0 50.0 6.0 50.0 DAY 16 1 7 27 16 ** 17 ** 8 20 7 1 DAY WITH THUNDER STORM 0 0 0 1 3 0 0 0 0 4 1 0 9 DAYS WITH SNOW OR SLEET 4 5 4 0 0 0 0 0 0 0 0 8 21 DAYS WITH DUST 0 0 0 4 5 2 3 0 0 0 0 0 14 WIND DIRECTION (PREVAILING) 225 225 225 270 270 270 90 225 45 270 225 225 225 PREVAILING WIND SPEED(KNOTS) 9.4 11.3 9.8 10.3 10.3 8.7 11.7 7.8 8.4 8.7 9.3 9.8 9.9 PREVAILING WIND PERCENT 4.8 12.9 10.5 7.9 9.3 7.9 5.6 4.8 7.1 2.4 11.3 9.7 6.5 CALMS PERCENT OF WIND 78.6 69.2 65.7 68.3 69.0 76.7 75.8 82.3 80.4 88.7 73.8 75.8 75.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 231 247 229 248 249 248 91 149 85 242 213 235 231 VECTOR WIND MAGNITUDE(KNOTS) 0.9 2.3 1.5 1.1 1.6 1.1 0.8 0.4 0.9 0.2 1.3 1.0 0.8 WIND STEADINESES (MEAN %) 47.4 71.9 44.1 35.5 53.3 52.4 36.4 23.5 52.9 20.0 54.2 47.6 34.8 WIND SPEED (MEAN KNOTS) 1.9 3.2 3.4 3.1 3.0 2.1 2.2 1.7 1.7 1.0 2.4 2.1 2.3 FASTEST WIND DIRECTION 260 210 270 240 280 210 30 120 140 70 210 240 210 FASTEST WIND SPEED (KNOTS) 19 35 23 29 17 17 19 17 17 17 17 19 35 DAY 20 14 7 9 2 2 12 22 6 7 22 14 DAYS WITH SKY CLEAR (0-2)/8 8 10 11 14 17 29 30 31 24 14 10 13 211 DAYS WITH P.CLOUDY (3-6)/8 12 13 16 8 12 1 1 0 6 13 12 12 106 DAYS WITH CLOUDY (7-8)/8 11 5 4 8 2 0 0 0 0 4 8 6 48 DAYS WITH VISIBILITY =< 2 KM 10 2 1 0 0 0 0 0 0 2 0 7 22 DURATION OF SUNSHINE HOURS ****** 187.9 188.6 218.2 305.1 371.2 369.5 363.1 276.9 217.7 149.0 155.1 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 826.3 822.9 823.7 825.6 825.2 821.5 819.6 820.9 828.4 830.1 826.9 827.2 824.9 MAX. QFE PRESSURE IN HPA 835.1 831.0 829.8 832.0 830.0 826.4 824.2 826.0 836.5 835.0 835.4 834.0 836.5 DAY-HOUR 9-18 19- 6 18- 6 5- 6 18- 6 8- 6 2- 3 15- 6 23- 6 10- 6 2- 6 7- 6 MIN. QFE PRESSURE IN HPA 815.5 814.2 813.8 818.0 819.8 815.2 816.0 816.2 820.0 824.0 817.0 814.4 813.8 DAY-HOUR 16- 9 12- 0 12-12 1-18 2-15 28-15 20-15 2-12 1-15 16-12 25-15 3-18 MEAN QNH PRESSURE IN HPA 1019.5 1015.4 1016.4 1018.7 1018.2 1013.8 1011.5 1013.1 1022.0 1024.0 1020.2 1020.6 1017.8 MAX. QNH PRESSURE IN HPA 1029.9 1025.1 1023.7 1026.3 1023.9 1019.6 1017.0 1019.1 1031.6 1029.8 1030.3 1028.6 1031.6 DAY-HOUR 9-18 19- 6 18- 6 5- 6 18- 6 8- 6 2- 3 15- 6 23- 6 10- 6 2- 6 7- 6 MIN. QNH PRESSURE IN HPA 1006.7 1005.1 1004.7 1009.7 1011.8 1006.3 1007.3 1007.5 1012.0 1016.8 1008.5 1005.4 1004.7 DAY-HOUR 16- 9 12- 0 12-12 1-18 2-15 28-15 20-15 2-12 1-15 16-12 25-15 3-18 MEAN QFF PRESSURE IN HPA 1021.4 1017.1 1014.4 1012.2 1009.2 1000.7 995.1 997.3 1011.6 1017.6 1017.5 1025.1 1011.6 MAX. QFF PRESSURE IN HPA 1036.8 1034.2 1024.4 1025.3 1018.1 1008.0 1004.9 1003.3 1024.7 1026.1 1028.8 1045.8 1045.8 DAY-HOUR 9-18 19- 6 2- 6 5- 6 18- 9 6- 3 1- 0 15- 3 23- 3 31-21 10- 6 7- 3 MIN. QFF PRESSURE IN HPA 1005.8 1003.4 1001.3 1003.2 1002.0 993.4 989.9 988.5 996.5 1007.7 1006.9 1003.6 988.5 DAY-HOUR 31-21 1- 0 12-12 1-18 13- 9 28- 9 31-12 2- 9 1-12 15-12 25-15 3-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 826.6 822.6 823.5 825.6 825.3 821.8 820.2 821.3 828.4 830.1 827.1 827.1 825.0 MAX. QFE PRESSURE IN HPA 835.1 830.0 827.6 830.6 829.4 826.0 824.0 824.5 834.9 834.0 834.0 833.0 835.1 DAY 10 19 19 6 18 8 2 15 24 10 2 8 MIN. QFE PRESSURE IN HPA 817.9 814.2 814.0 819.0 820.0 818.0 817.4 818.0 821.8 826.8 818.4 815.2 814.0 DAY 16 12 12 2 6 28 8 1 1 16 26 4 MEAN QNH PRESSURE IN HPA 1019.8 1015.1 1016.1 1018.7 1018.3 1014.2 1012.2 1013.6 1022.0 1024.0 1020.5 1020.5 1017.9 MAX. QNH PRESSURE IN HPA 1029.9 1023.9 1021.0 1024.6 1023.2 1019.1 1016.8 1017.4 1029.7 1028.6 1028.6 1027.4 1029.9 DAY 10 19 19 6 18 8 2 15 24 10 2 8 MIN. QNH PRESSURE IN HPA 1009.5 1005.1 1004.9 1010.8 1012.0 1009.7 1008.9 1009.7 1014.2 1020.1 1010.1 1006.3 1004.9 DAY 16 12 12 2 6 28 8 1 1 16 26 4 MEAN QFF PRESSURE IN HPA 1021.3 1016.2 1013.9 1011.9 1009.5 1001.2 995.9 997.7 1011.3 1016.7 1017.1 1024.2 1011.4 MAX. QFF PRESSURE IN HPA 1035.8 1032.8 1022.3 1022.4 1016.6 1007.3 1004.9 1001.3 1021.3 1023.6 1027.1 1042.8 1042.8 DAY 10 19 17 6 18 7 1 15 23 10 10 7 MIN. QFF PRESSURE IN HPA 1009.0 1003.4 1002.1 1005.3 1004.1 996.6 992.1 992.0 998.0 1010.0 1008.1 1007.7 992.0 DAY 16 1 12 2 13 22 31 1 1 15 17 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 826.5 822.5 823.9 826.0 825.6 822.1 820.5 821.6 829.0 830.3 826.9 827.2 825.2 MAX. QFE PRESSURE IN HPA 834.8 830.0 829.0 830.9 829.5 826.0 824.2 825.0 835.5 834.0 834.0 833.0 835.5 DAY 10 19 18 5 18 8 2 8 23 10 2 7 MIN. QFE PRESSURE IN HPA 816.7 814.4 815.4 819.0 821.0 818.3 817.6 818.0 822.6 826.3 819.4 816.0 814.4 DAY 16 12 12 2 6 28 31 1 1 16 26 4 MEAN QNH PRESSURE IN HPA 1019.7 1015.0 1016.6 1019.2 1018.7 1014.5 1012.6 1014.0 1022.7 1024.2 1020.3 1020.6 1018.2 MAX. QNH PRESSURE IN HPA 1029.6 1023.9 1022.7 1025.0 1023.3 1019.1 1017.0 1018.0 1030.4 1028.6 1028.6 1027.4 1030.4 DAY 10 19 18 5 18 8 2 8 23 10 2 7 MIN. QNH PRESSURE IN HPA 1008.1 1005.4 1006.6 1010.8 1013.2 1010.0 1009.2 1009.7 1015.1 1019.5 1011.3 1007.3 1005.4 DAY 16 12 12 2 6 28 31 1 1 16 26 4 MEAN QFF PRESSURE IN HPA 1022.2 1017.3 1015.7 1013.6 1010.8 1001.9 997.4 999.6 1013.7 1019.0 1018.3 1026.0 1012.9 MAX. QFF PRESSURE IN HPA 1036.1 1033.3 1024.2 1024.6 1017.6 1008.0 1004.8 1003.3 1024.7 1026.1 1027.9 1045.8 1045.8 DAY 10 20 17 5 7 6 2 15 23 10 10 7 MIN. QFF PRESSURE IN HPA 1007.7 1004.5 1003.1 1004.8 1004.0 995.8 993.8 993.7 1001.9 1013.3 1009.2 1010.3 993.7 DAY 16 1 7 2 13 3 31 1 1 1 17 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 827.2 823.6 824.7 826.8 826.0 822.5 820.8 822.2 829.7 831.2 828.0 828.0 825.9 MAX. QFE PRESSURE IN HPA 834.9 831.0 829.8 832.0 830.0 826.4 824.2 826.0 836.5 835.0 835.4 834.0 836.5 DAY 9 19 18 5 18 8 2 15 23 10 2 7 MIN. QFE PRESSURE IN HPA 816.1 816.0 815.0 818.8 821.4 818.0 818.0 818.2 823.0 827.0 821.0 817.0 815.0 DAY 16 12 7 2 6 28 31 2 1 16 17 4 MEAN QNH PRESSURE IN HPA 1020.6 1016.3 1017.6 1020.0 1019.2 1015.0 1013.0 1014.6 1023.5 1025.3 1021.5 1021.5 1019.0 MAX. QNH PRESSURE IN HPA 1029.7 1025.1 1023.7 1026.3 1023.9 1019.6 1017.0 1019.1 1031.6 1029.8 1030.3 1028.6 1031.6 DAY 9 19 18 5 18 8 2 15 23 10 2 7 MIN. QNH PRESSURE IN HPA 1007.4 1007.3 1006.1 1010.6 1013.7 1009.7 1009.7 1009.9 1015.6 1020.3 1013.2 1008.5 1006.1 DAY 16 12 7 2 6 28 31 2 1 16 17 4 MEAN QFF PRESSURE IN HPA 1023.1 1018.6 1016.1 1013.4 1009.7 1001.6 996.3 998.7 1012.8 1019.3 1019.3 1026.6 1012.9 MAX. QFF PRESSURE IN HPA 1036.4 1034.2 1024.4 1025.3 1017.4 1007.5 1004.6 1002.8 1023.5 1025.3 1028.8 1045.0 1045.0 DAY 10 19 2 5 18 6 1 22 23 10 10 7 MIN. QFF PRESSURE IN HPA 1006.9 1005.9 1002.3 1005.2 1003.3 997.4 990.7 991.7 999.1 1012.0 1010.0 1009.3 990.7 DAY 16 12 7 2 28 28 31 2 1 2 17 3 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.4 823.1 823.9 825.9 825.2 821.6 819.6 820.9 828.6 830.2 827.1 827.3 825.0 MAX. QFE PRESSURE IN HPA 834.6 830.3 828.6 832.0 830.0 825.8 822.8 824.6 835.2 834.0 834.6 833.5 835.2 DAY 9 19 18 5 18 8 2 15 23 23 2 7 MIN. QFE PRESSURE IN HPA 815.5 816.0 815.0 819.0 820.0 816.3 817.0 817.0 821.8 826.0 819.8 815.2 815.0 DAY 16 12 7 2 4 28 20 2 2 16 17 4 MEAN QNH PRESSURE IN HPA 1019.6 1015.7 1016.7 1019.0 1018.2 1013.9 1011.6 1013.1 1022.2 1024.1 1020.4 1020.6 1017.9 MAX. QNH PRESSURE IN HPA 1029.3 1024.2 1022.2 1026.3 1023.9 1018.9 1015.3 1017.5 1030.1 1028.6 1029.3 1028.0 1030.1 DAY 9 19 18 5 18 8 2 15 23 23 2 7 MIN. QNH PRESSURE IN HPA 1006.7 1007.3 1006.1 1010.8 1012.0 1007.6 1008.5 1008.5 1014.2 1019.1 1011.8 1006.3 1006.1 DAY 16 12 7 2 4 28 20 2 2 16 17 4 MEAN QFF PRESSURE IN HPA 1021.1 1016.9 1014.1 1012.1 1008.7 1000.2 994.3 996.1 1010.6 1017.0 1017.2 1024.7 1011.1 MAX. QFF PRESSURE IN HPA 1035.0 1031.5 1021.8 1024.1 1018.1 1007.0 1002.8 1000.4 1020.6 1024.7 1026.3 1044.1 1044.1 DAY 9 19 2 5 18 6 1 15 23 31 10 7 MIN. QFF PRESSURE IN HPA 1006.1 1006.5 1001.8 1005.6 1002.0 993.4 990.0 988.5 998.3 1010.4 1008.3 1008.2 988.5 DAY 16 12 7 30 13 28 31 2 2 2 17 3 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.4 822.0 822.6 824.5 824.3 820.4 818.3 819.5 827.3 828.9 826.1 826.5 823.8 MAX. QFE PRESSURE IN HPA 834.0 829.0 827.1 830.0 828.0 824.1 821.2 822.7 834.0 832.8 833.0 832.7 834.0 DAY 9 19 18 5 18 8 2 15 23 23 1 7 MIN. QFE PRESSURE IN HPA 816.0 816.0 813.8 818.5 820.4 815.6 816.4 816.2 820.0 824.0 818.2 815.2 813.8 DAY 16 12 12 2 13 28 21 2 2 16 25 3 MEAN QNH PRESSURE IN HPA 1018.5 1014.4 1015.1 1017.4 1017.2 1012.5 1010.0 1011.4 1020.6 1022.6 1019.3 1019.7 1016.6 MAX. QNH PRESSURE IN HPA 1028.6 1022.7 1020.4 1023.9 1021.5 1016.9 1013.5 1015.2 1028.6 1027.2 1027.4 1027.1 1028.6 DAY 9 19 18 5 18 8 2 15 23 23 1 7 MIN. QNH PRESSURE IN HPA 1007.3 1007.3 1004.7 1010.3 1012.5 1006.8 1007.8 1007.5 1012.0 1016.8 1009.9 1006.3 1004.7 DAY 16 12 12 2 13 28 21 2 2 16 25 3 MEAN QFF PRESSURE IN HPA 1019.9 1015.5 1012.7 1010.6 1008.2 999.3 993.1 995.1 1009.8 1015.4 1015.8 1023.4 1009.9 MAX. QFF PRESSURE IN HPA 1034.2 1031.4 1020.4 1022.0 1015.2 1005.7 1001.1 998.9 1020.1 1021.6 1023.8 1042.2 1042.2 DAY 9 19 1 5 18 7 1 15 23 31 10 7 MIN. QFF PRESSURE IN HPA 1008.0 1006.4 1001.3 1004.3 1002.3 994.7 989.9 989.6 996.5 1007.7 1007.4 1005.3 989.6 DAY 16 12 12 30 13 28 31 10 1 15 25 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 825.7 822.4 822.9 824.4 824.3 820.0 818.0 819.4 827.1 829.1 826.3 826.8 823.9 MAX. QFE PRESSURE IN HPA 834.2 829.9 827.4 829.0 828.0 824.0 821.0 822.5 833.8 832.6 833.4 832.7 834.2 DAY 9 18 1 5 17 7 2 15 23 24 1 7 MIN. QFE PRESSURE IN HPA 817.5 815.8 816.0 818.2 819.8 815.2 816.0 816.3 820.0 825.0 817.0 814.6 814.6 DAY 16 11 12 1 2 28 20 10 1 16 25 3 MEAN QNH PRESSURE IN HPA 1018.8 1014.9 1015.4 1017.3 1017.1 1012.0 1009.7 1011.3 1020.5 1022.8 1019.5 1020.1 1016.6 MAX. QNH PRESSURE IN HPA 1028.9 1023.8 1020.8 1022.7 1021.5 1016.8 1013.2 1015.0 1028.4 1027.0 1027.9 1027.1 1028.9 DAY 9 18 1 5 17 7 2 15 23 24 1 7 MIN. QNH PRESSURE IN HPA 1009.1 1007.0 1007.3 1009.9 1011.8 1006.3 1007.3 1007.6 1012.0 1018.0 1008.5 1005.6 1005.6 DAY 16 11 12 1 2 28 20 10 1 16 25 3 MEAN QFF PRESSURE IN HPA 1021.2 1017.2 1014.2 1011.6 1009.1 999.4 994.0 996.5 1011.5 1017.7 1017.5 1025.5 1011.3 MAX. QFF PRESSURE IN HPA 1035.1 1030.0 1021.8 1021.9 1014.9 1005.6 1000.0 1000.2 1022.6 1023.3 1026.5 1045.0 1045.0 DAY 9 19 1 5 7 7 1 15 24 31 10 7 MIN. QFF PRESSURE IN HPA 1009.1 1008.3 1007.0 1003.9 1002.7 994.6 991.0 991.1 998.8 1011.2 1006.9 1004.6 991.0 DAY 16 11 7 30 31 28 31 10 2 1 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 826.4 823.3 823.9 825.6 825.5 821.5 819.3 821.0 828.5 830.3 827.0 827.5 825.0 MAX. QFE PRESSURE IN HPA 835.1 830.3 828.0 830.0 829.2 825.0 822.2 823.8 835.0 833.7 833.5 833.2 835.1 DAY 9 18 1 4 17 7 2 7 23 23 1 7 MIN. QFE PRESSURE IN HPA 819.4 815.0 814.5 818.0 821.2 817.5 817.0 817.8 822.0 826.0 817.8 814.4 814.4 DAY 31 11 11 1 2 27 6 1 1 16 25 3 MEAN QNH PRESSURE IN HPA 1019.6 1016.0 1016.7 1018.7 1018.5 1013.8 1011.2 1013.2 1022.1 1024.2 1020.3 1020.9 1017.9 MAX. QNH PRESSURE IN HPA 1029.9 1024.2 1021.5 1023.9 1022.9 1018.0 1014.6 1016.5 1029.8 1028.3 1028.0 1027.7 1029.9 DAY 9 18 1 4 17 7 2 7 23 23 1 7 MIN. QNH PRESSURE IN HPA 1011.3 1006.1 1005.5 1009.7 1013.5 1009.1 1008.5 1009.4 1014.4 1019.1 1009.4 1005.4 1005.4 DAY 31 11 11 1 2 27 6 1 1 16 25 3 MEAN QFF PRESSURE IN HPA 1022.0 1018.3 1015.0 1012.1 1009.0 1000.8 994.6 997.6 1011.7 1018.4 1018.0 1026.0 1012.0 MAX. QFF PRESSURE IN HPA 1036.8 1032.3 1024.2 1023.2 1016.1 1006.7 1000.8 1000.9 1022.1 1024.1 1026.4 1044.2 1044.2 DAY 9 18 2 5 17 5 1 21 23 23 10 7 MIN. QFF PRESSURE IN HPA 1011.2 1006.5 1005.0 1003.2 1002.9 995.7 989.9 991.1 998.5 1010.1 1007.9 1003.6 989.9 DAY 4 11 11 1 28 27 30 1 1 1 25 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 826.2 823.4 823.9 826.0 825.7 822.0 820.1 821.6 828.8 830.5 826.8 827.4 825.2 MAX. QFE PRESSURE IN HPA 835.1 830.0 828.3 830.9 829.7 826.0 824.0 824.5 835.0 834.0 834.2 832.9 835.1 DAY 9 18 18 28 17 7 1 14 23 9 1 7 MIN. QFE PRESSURE IN HPA 817.9 815.0 815.0 819.8 820.3 818.1 817.9 818.2 821.8 826.7 818.0 815.0 815.0 DAY 31 11 11 2 5 27 30 1 1 16 25 3 MEAN QNH PRESSURE IN HPA 1019.4 1016.0 1016.7 1019.2 1018.7 1014.4 1012.1 1014.0 1022.5 1024.5 1020.1 1020.8 1018.2 MAX. QNH PRESSURE IN HPA 1029.9 1023.9 1021.9 1025.0 1023.5 1019.1 1016.8 1017.4 1029.8 1028.6 1028.9 1027.3 1029.9 DAY 9 18 18 28 17 7 1 14 23 9 1 7 MIN. QNH PRESSURE IN HPA 1009.5 1006.1 1006.1 1011.8 1012.4 1009.8 1009.5 1009.9 1014.2 1020.0 1009.7 1006.1 1006.1 DAY 31 11 11 2 5 27 30 1 1 16 25 3 MEAN QFF PRESSURE IN HPA 1020.9 1017.3 1014.0 1012.3 1009.1 1001.1 995.1 997.6 1011.2 1017.5 1016.9 1024.9 1011.5 MAX. QFF PRESSURE IN HPA 1036.0 1032.3 1022.5 1022.4 1016.8 1007.9 1004.6 1001.0 1021.2 1026.1 1027.3 1042.4 1042.4 DAY 9 19 1 5 17 5 1 14 23 31 9 6 MIN. QFF PRESSURE IN HPA 1005.8 1005.3 1003.6 1006.8 1002.2 995.7 991.5 990.4 998.6 1011.1 1007.7 1006.7 990.4 DAY 31 11 11 30 31 27 31 1 1 14 25 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.5 2.0 6.0 10.2 14.3 19.1 25.6 25.5 19.1 11.9 6.3 -1.4 11.7 MINIMUN AIR TEMPERATURE (C) -4.6 -3.5 -1.6 3.8 7.0 9.9 15.0 13.7 8.6 2.0 -2.4 -6.7 3.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 21 13 7 0 0 0 0 0 0 0 11 27 79 DAYS WITH FREEZING MIN.<= 0 28 27 22 5 0 0 0 0 0 12 21 31 146 TEMPERATURE RECORDS LOWEST(C) -10.8 -9.0 -6.2 -2.0 0.2 8.0 9.4 10.2 2.6 -1.4 -12.2 -12.4 -12.4 DAY 23 26 1 7 9 1 4 23 22 27 28 21 MAXIMUM AIR TEMPERATURE (C) 9.0 8.8 13.6 16.9 21.4 27.3 35.0 35.8 29.0 21.5 15.4 5.4 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 29 31 15 0 0 0 78 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 5 5 TEMPERATURE RECORDS HIGHEST(C) 13.2 13.2 19.0 22.8 26.0 32.0 38.8 37.6 35.0 28.6 22.4 12.0 38.8 DAY 30 22 24 30 24 21 19 2 4 3 1 31 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 12.3 15.2 13.1 14.4 17.4 20.0 22.1 20.4 19.5 17.8 12.1 16.5 MEAN DAILY TEMP. (MDT) (C) 2.2 2.7 6.0 10.4 14.2 18.6 25.0 24.7 18.8 11.7 6.5 -0.6 11.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 1.2 126.4 114.9 6.8 0.0 0.0 0.0 249.3 HEATING DEG. DAYS(BASE 18 0C) 489.6 429.5 371.6 228.6 119.1 14.9 0.0 0.0 25.5 193.8 345.0 577.9 2795.5 DEWPOINT (MEAN C) -3.9 -2.5 -0.9 3.8 7.2 9.6 5.5 3.9 1.6 -2.2 -6.9 -6.7 0.7 MIXING RATIO (G/KG) 3.64 3.97 4.50 6.25 7.88 9.36 7.22 6.32 5.35 4.08 3.01 2.90 5.37 VAPOUR PRESSURE (HPA) 4.81 5.23 5.92 8.21 10.34 12.20 9.39 8.27 7.03 5.39 3.98 3.84 7.05 SATURATION DEF. (HPA) 2.38 2.13 4.00 4.84 6.84 11.37 25.96 27.14 17.21 10.06 6.63 2.00 10.05 RELATIVE HUMIDITY (MEAN %) 71 75 66 68 67 59 30 27 34 42 42 72 54 RELATIVE HUMIDITY (MAX. %) 90 94 89 89 91 86 44 45 55 68 66 90 76 RELATIVE HUMIDITY (MIN. %) 46 49 41 48 43 34 20 15 20 23 24 46 34 RELATIVE HUMIDITY (MEAN% 03UTC) 85 90 85 85 89 85 42 44 54 65 60 86 73 RELATIVE HUMIDITY (MEAN% 09UTC) 62 68 52 57 50 42 26 20 24 29 32 59 43 RELATIVE HUMIDITY (MEAN% 15UTC) 57 57 48 56 52 39 21 18 24 29 29 58 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.0 42.3 29.1 58.6 54.5 9.1 0.0 0.0 0.0 0.0 3.0 17.8 220.4 DAYS WITH PRECIPITATION >=10 0 1 1 1 1 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 0 5 2 5 4 1 0 0 0 0 0 1 18 DAYS WITH PRECIPITATION >= 1 2 8 4 10 11 3 0 0 0 0 1 4 43 DAYS WITH PRECIPITATION 4 8 7 15 13 5 0 0 0 0 5 7 64 GREATEST DAILY PRECIPITATION 3.0 11.8 13.0 15.6 12.0 5.0 0.0 0.0 0.0 0.0 2.0 8.8 15.6 DAY 17 23 17 23 28 2 ** ** ** ** 10 12 DAY WITH THUNDER STORM 0 0 0 1 5 2 0 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 1 4 1 0 0 0 0 0 0 0 0 6 12 DAYS WITH DUST 0 0 0 0 0 1 1 0 2 0 0 0 4 WIND DIRECTION (PREVAILING) 225 225 225 225 225 225 135 90 225 225 225 90 225 PREVAILING WIND SPEED(KNOTS) 11.2 8.6 10.1 9.4 9.9 7.0 10.3 11.4 7.8 11.6 10.5 8.0 9.5 PREVAILING WIND PERCENT 5.2 4.5 10.1 9.6 6.0 4.2 6.0 8.5 4.6 6.0 15.0 4.4 6.3 CALMS PERCENT OF WIND 80.2 79.5 70.6 63.8 74.6 82.5 76.2 77.4 81.3 82.7 70.8 90.3 77.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 242 202 237 210 228 267 149 115 239 205 219 108 211 VECTOR WIND MAGNITUDE(KNOTS) 1.0 0.5 1.5 0.7 0.5 0.4 0.5 1.0 0.4 0.6 2.0 0.5 0.6 WIND STEADINESES (MEAN %) 52.6 26.3 50.0 20.6 23.8 26.7 23.8 50.0 25.0 35.3 71.4 62.5 28.6 WIND SPEED (MEAN KNOTS) 1.9 1.9 3.0 3.4 2.1 1.5 2.1 2.0 1.6 1.7 2.8 0.8 2.1 FASTEST WIND DIRECTION 220 210 340 170 190 190 120 110 60 210 210 120 210 FASTEST WIND SPEED (KNOTS) 19 29 25 19 27 19 19 19 16 16 19 14 29 DAY 10 5 8 23 26 2 22 9 1 3 24 11 DAYS WITH SKY CLEAR (0-2)/8 22 14 16 10 13 22 25 31 29 27 24 17 250 DAYS WITH P.CLOUDY (3-6)/8 6 12 11 12 13 8 5 0 1 4 4 7 83 DAYS WITH CLOUDY (7-8)/8 3 2 4 8 5 0 1 0 0 0 2 7 32 DAYS WITH VISIBILITY =< 2 KM 3 2 0 1 1 0 0 0 0 0 1 6 14 DURATION OF SUNSHINE HOURS 206.2 ****** 242.4 ****** ****** 188.7 339.6 355.1 319.9 299.5 250.7 164.3 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 827.7 824.7 824.9 825.6 826.7 823.3 819.6 822.7 825.4 828.2 827.3 827.7 825.3 MAX. QFE PRESSURE IN HPA 835.0 831.4 833.0 832.0 831.0 828.7 824.3 827.0 831.2 835.5 834.0 831.2 835.5 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 22- 3 2-21 4- 3 25- 6 13- 6 25- 6 15- 6 23-18 MIN. QFE PRESSURE IN HPA 821.0 813.0 817.0 820.0 821.6 818.0 814.5 818.0 820.0 821.4 819.4 823.0 813.0 DAY-HOUR 11-12 5- 3 17- 3 19- 0 5-12 13-15 16-12 3-15 4-15 12-12 25-12 4-12 MEAN QNH PRESSURE IN HPA 1021.2 1017.6 1017.8 1018.7 1019.9 1016.0 1011.5 1015.2 1018.4 1021.7 1020.7 1021.1 1018.3 MAX. QNH PRESSURE IN HPA 1029.8 1025.5 1027.4 1026.3 1025.1 1022.3 1017.1 1020.3 1025.3 1030.4 1028.6 1025.3 1030.4 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 22- 3 2-21 4- 3 25- 6 13- 6 25- 6 15- 6 23-18 MIN. QNH PRESSURE IN HPA 1013.2 1003.7 1008.5 1012.0 1013.9 1009.7 1005.5 1009.7 1012.0 1013.7 1011.3 1015.6 1003.7 DAY-HOUR 11-12 5- 3 17- 3 19- 0 5-12 13-15 16-12 3-15 4-15 12-12 25-12 4-12 MEAN QFF PRESSURE IN HPA 1022.8 1018.6 1015.8 1013.4 1011.6 1004.1 995.5 999.4 1006.9 1015.5 1018.7 1025.0 1012.3 MAX. QFF PRESSURE IN HPA 1033.8 1027.4 1028.0 1022.9 1017.5 1014.9 1005.6 1007.0 1018.9 1027.7 1030.4 1033.0 1033.8 DAY-HOUR 7- 6 12- 6 3- 6 13-12 28-12 1- 3 4- 3 13- 3 22- 3 27- 6 27- 6 20- 3 MIN. QFF PRESSURE IN HPA 1010.3 1000.9 1002.2 1003.1 1004.6 995.3 987.7 992.8 997.6 1002.3 1005.9 1017.7 987.7 DAY-HOUR 12-12 5- 3 25-21 19- 0 5-12 29-18 16-12 3- 9 4-12 12-12 24- 0 4-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 827.8 824.8 824.8 825.6 826.8 823.7 819.7 822.9 825.6 828.3 827.3 827.8 825.4 MAX. QFE PRESSURE IN HPA 833.3 830.0 831.2 831.0 830.7 827.1 824.0 826.2 830.0 834.2 833.2 830.8 834.2 DAY 7 1 3 13 22 3 4 25 13 27 16 20 MIN. QFE PRESSURE IN HPA 821.8 816.0 818.0 820.0 823.0 819.0 816.2 820.0 820.2 822.3 821.2 824.2 816.0 DAY 12 5 17 19 6 22 17 4 20 12 24 12 MEAN QNH PRESSURE IN HPA 1021.3 1017.8 1017.7 1018.7 1020.1 1016.4 1011.7 1015.5 1018.6 1021.8 1020.7 1021.3 1018.5 MAX. QNH PRESSURE IN HPA 1027.8 1023.9 1025.3 1025.1 1024.7 1020.4 1016.8 1019.4 1023.9 1028.9 1027.7 1024.8 1028.9 DAY 7 1 3 13 22 3 4 25 13 27 16 20 MIN. QNH PRESSURE IN HPA 1014.2 1007.3 1009.7 1012.0 1015.6 1010.8 1007.5 1012.0 1012.3 1014.8 1013.5 1017.0 1007.3 DAY 12 5 17 19 6 22 17 4 20 12 24 12 MEAN QFF PRESSURE IN HPA 1021.9 1018.1 1015.4 1013.3 1011.6 1004.7 995.7 999.4 1006.7 1014.9 1017.7 1024.2 1012.0 MAX. QFF PRESSURE IN HPA 1028.6 1025.5 1025.1 1021.3 1016.4 1011.7 1003.8 1004.3 1017.1 1024.6 1026.8 1030.9 1030.9 DAY 7 25 3 14 9 1 4 13 22 27 27 20 MIN. QFF PRESSURE IN HPA 1010.5 1004.3 1005.1 1003.1 1005.0 996.9 990.3 994.2 998.2 1002.7 1005.9 1017.8 990.3 DAY 17 5 17 19 6 22 17 3 20 4 24 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 827.8 824.9 825.1 826.0 827.0 824.0 820.1 823.5 826.0 828.7 827.6 827.9 825.7 MAX. QFE PRESSURE IN HPA 833.6 831.0 831.9 831.0 831.0 827.4 824.3 826.5 830.7 834.4 833.4 830.8 834.4 DAY 7 1 3 13 22 1 4 25 13 25 16 30 MIN. QFE PRESSURE IN HPA 821.5 813.0 817.0 820.4 823.5 819.0 817.0 820.8 820.4 822.4 821.0 824.2 813.0 DAY 12 5 17 19 11 22 16 9 20 12 24 12 MEAN QNH PRESSURE IN HPA 1021.3 1017.8 1018.1 1019.2 1020.4 1016.7 1012.2 1016.2 1019.2 1022.3 1021.0 1021.4 1018.8 MAX. QNH PRESSURE IN HPA 1028.2 1025.1 1026.1 1025.1 1025.1 1020.8 1017.1 1019.7 1024.7 1029.1 1027.9 1024.8 1029.1 DAY 7 1 3 13 22 1 4 25 13 25 16 30 MIN. QNH PRESSURE IN HPA 1013.8 1003.7 1008.5 1012.5 1016.2 1010.8 1008.5 1013.0 1012.5 1014.9 1013.2 1017.0 1003.7 DAY 12 5 17 19 11 22 16 9 20 12 24 12 MEAN QFF PRESSURE IN HPA 1023.8 1019.3 1017.0 1014.9 1013.0 1005.6 997.3 1001.9 1009.1 1017.7 1020.1 1026.1 1013.8 MAX. QFF PRESSURE IN HPA 1031.7 1026.6 1026.9 1022.5 1017.4 1014.9 1005.6 1007.0 1018.9 1027.6 1029.6 1033.0 1033.0 DAY 7 25 3 13 9 1 4 13 22 27 27 20 MIN. QFF PRESSURE IN HPA 1012.1 1000.9 1003.5 1004.3 1007.4 997.6 992.2 997.4 1001.6 1004.8 1006.8 1020.0 992.2 DAY 11 5 17 19 3 22 16 8 20 4 24 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 828.8 825.7 826.0 826.4 827.4 824.3 820.7 823.9 826.5 829.5 828.4 828.7 826.4 MAX. QFE PRESSURE IN HPA 835.0 831.4 833.0 832.0 831.0 828.0 824.3 827.0 831.2 835.5 834.0 831.0 835.5 DAY 7 1 3 13 22 1 4 25 13 25 15 1 MIN. QFE PRESSURE IN HPA 822.4 815.0 818.3 822.0 823.8 819.0 816.8 821.0 821.1 823.4 823.0 824.6 815.0 DAY 11 5 17 19 2 22 16 3 20 12 24 12 MEAN QNH PRESSURE IN HPA 1022.4 1018.8 1019.1 1019.6 1020.8 1017.1 1012.8 1016.7 1019.8 1023.3 1022.0 1022.3 1019.6 MAX. QNH PRESSURE IN HPA 1029.8 1025.5 1027.4 1026.3 1025.1 1021.5 1017.1 1020.3 1025.3 1030.4 1028.6 1025.1 1030.4 DAY 7 1 3 13 22 1 4 25 13 25 15 1 MIN. QNH PRESSURE IN HPA 1014.9 1006.1 1010.0 1014.4 1016.5 1010.8 1008.2 1013.2 1013.3 1016.1 1015.6 1017.5 1006.1 DAY 11 5 17 19 2 22 16 3 20 12 24 12 MEAN QFF PRESSURE IN HPA 1024.9 1020.7 1017.5 1014.1 1012.2 1004.8 996.7 1000.9 1008.2 1017.3 1020.8 1027.2 1013.8 MAX. QFF PRESSURE IN HPA 1033.8 1027.4 1028.0 1022.2 1016.3 1012.9 1004.0 1005.0 1016.3 1027.7 1030.4 1033.0 1033.8 DAY 7 12 3 6 28 1 4 24 22 27 27 20 MIN. QFF PRESSURE IN HPA 1012.6 1003.8 1007.0 1006.2 1006.9 996.7 991.3 995.7 1000.3 1004.9 1009.8 1021.6 991.3 DAY 11 5 17 19 2 29 16 3 20 12 24 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 827.9 825.0 825.4 825.7 826.7 823.3 819.7 822.8 825.4 828.2 827.2 827.7 825.4 MAX. QFE PRESSURE IN HPA 833.6 831.0 832.0 831.0 829.8 827.4 823.8 825.2 829.6 834.5 833.0 830.8 834.5 DAY 7 1 3 13 28 1 4 13 13 25 15 10 MIN. QFE PRESSURE IN HPA 822.4 814.0 819.1 820.5 822.7 818.7 815.8 819.8 820.2 822.4 821.0 823.8 814.0 DAY 11 5 26 24 6 22 16 3 20 12 25 12 MEAN QNH PRESSURE IN HPA 1021.4 1018.0 1018.4 1018.8 1020.0 1016.0 1011.7 1015.4 1018.4 1021.8 1020.6 1021.1 1018.5 MAX. QNH PRESSURE IN HPA 1028.2 1025.1 1026.3 1025.1 1023.7 1020.8 1016.5 1018.2 1023.4 1029.2 1027.4 1024.8 1029.2 DAY 7 1 3 13 28 1 4 13 13 25 15 10 MIN. QNH PRESSURE IN HPA 1014.9 1004.9 1011.0 1012.6 1015.2 1010.5 1007.0 1011.8 1012.3 1014.9 1013.2 1016.5 1004.9 DAY 11 5 26 24 6 22 16 3 20 12 25 12 MEAN QFF PRESSURE IN HPA 1022.4 1018.3 1015.7 1012.9 1010.9 1003.7 994.8 998.3 1006.1 1014.5 1017.5 1024.3 1011.6 MAX. QFF PRESSURE IN HPA 1030.6 1025.3 1025.2 1021.1 1015.4 1011.1 1003.3 1002.9 1014.4 1023.7 1026.9 1030.2 1030.6 DAY 7 1 3 6 28 1 4 13 22 26 30 20 MIN. QFF PRESSURE IN HPA 1011.9 1001.3 1003.7 1006.0 1005.0 996.1 988.1 992.8 998.9 1003.0 1008.3 1019.1 988.1 DAY 11 5 25 18 6 29 16 3 20 12 24 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 826.6 823.6 823.8 824.7 825.8 822.2 818.5 821.5 824.1 826.9 826.1 826.5 824.2 MAX. QFE PRESSURE IN HPA 832.0 830.0 830.0 832.0 830.0 826.7 822.2 823.8 828.4 833.1 832.2 829.4 833.1 DAY 7 1 3 13 28 1 4 13 12 25 15 23 MIN. QFE PRESSURE IN HPA 821.0 815.8 818.0 820.0 821.6 818.2 814.5 818.6 820.0 821.4 819.4 823.0 814.5 DAY 11 5 17 24 5 29 16 8 19 12 25 4 MEAN QNH PRESSURE IN HPA 1019.8 1016.3 1016.5 1017.6 1018.9 1014.7 1010.2 1013.8 1016.9 1020.2 1019.3 1019.7 1017.0 MAX. QNH PRESSURE IN HPA 1026.3 1023.9 1023.9 1026.3 1023.9 1020.0 1014.6 1016.5 1022.0 1027.6 1026.5 1023.2 1027.6 DAY 7 1 3 13 28 1 4 13 12 25 15 23 MIN. QNH PRESSURE IN HPA 1013.2 1007.0 1009.7 1012.0 1013.9 1009.9 1005.5 1010.4 1012.0 1013.7 1011.3 1015.6 1005.5 DAY 11 5 17 24 5 29 16 8 19 12 25 4 MEAN QFF PRESSURE IN HPA 1020.2 1016.5 1013.9 1012.0 1010.4 1002.6 993.8 997.4 1004.8 1013.1 1016.3 1022.4 1010.3 MAX. QFF PRESSURE IN HPA 1028.7 1022.7 1022.6 1022.9 1017.5 1010.7 1001.1 1002.8 1012.2 1022.0 1025.9 1028.8 1028.8 DAY 7 1 3 13 28 1 4 13 22 26 27 20 MIN. QFF PRESSURE IN HPA 1010.3 1004.4 1002.6 1006.2 1004.6 995.6 987.7 993.0 997.6 1002.3 1008.7 1017.7 987.7 DAY 12 5 25 19 5 29 16 3 4 12 7 4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 827.0 823.8 823.9 824.8 825.7 821.9 818.2 821.2 824.1 827.2 826.6 827.0 824.3 MAX. QFE PRESSURE IN HPA 832.2 830.0 829.6 830.8 829.0 825.8 822.0 823.5 828.4 833.0 832.8 830.0 833.0 DAY 6 1 3 12 28 1 3 25 12 25 15 23 MIN. QFE PRESSURE IN HPA 822.0 817.0 818.1 821.0 822.0 818.0 814.5 818.0 820.0 822.1 820.0 824.0 814.5 DAY 11 5 25 17 6 13 16 3 4 12 25 4 MEAN QNH PRESSURE IN HPA 1020.3 1016.5 1016.7 1017.8 1018.8 1014.3 1009.9 1013.4 1016.9 1020.5 1019.8 1020.3 1017.1 MAX. QNH PRESSURE IN HPA 1026.5 1023.9 1023.4 1024.8 1022.7 1018.9 1014.4 1016.2 1022.0 1027.4 1027.2 1023.9 1027.4 DAY 6 1 3 12 28 1 3 25 12 25 15 23 MIN. QNH PRESSURE IN HPA 1014.4 1008.5 1009.8 1013.2 1014.4 1009.7 1005.5 1009.7 1012.0 1014.5 1012.0 1016.8 1005.5 DAY 11 5 25 17 6 13 16 3 4 12 25 4 MEAN QFF PRESSURE IN HPA 1022.7 1017.9 1015.4 1013.4 1011.4 1002.9 994.6 998.9 1006.8 1015.8 1019.1 1025.0 1012.0 MAX. QFF PRESSURE IN HPA 1030.3 1023.4 1023.6 1021.3 1017.1 1009.8 1001.7 1003.2 1013.2 1025.8 1027.8 1029.9 1030.3 DAY 7 13 3 13 28 1 3 13 21 26 15 20 MIN. QFF PRESSURE IN HPA 1013.3 1006.2 1003.9 1006.9 1006.6 995.7 988.9 993.8 998.9 1006.0 1010.0 1020.7 988.9 DAY 11 5 25 18 2 29 16 8 4 4 7 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 827.9 824.9 825.1 825.8 826.8 823.5 819.6 822.7 825.5 828.3 827.5 827.9 825.5 MAX. QFE PRESSURE IN HPA 833.4 831.2 830.3 831.6 831.0 827.5 823.3 826.0 830.0 834.3 833.8 831.2 834.3 DAY 6 1 2 12 27 2 3 24 21 25 15 23 MIN. QFE PRESSURE IN HPA 822.6 819.3 818.5 821.5 821.7 819.3 815.2 820.0 821.0 824.0 821.0 825.0 815.2 DAY 16 4 25 24 6 29 16 3 19 12 25 5 MEAN QNH PRESSURE IN HPA 1021.4 1017.8 1018.0 1019.0 1020.1 1016.2 1011.5 1015.2 1018.5 1021.8 1020.9 1021.4 1018.5 MAX. QNH PRESSURE IN HPA 1027.9 1025.3 1024.2 1025.8 1025.1 1020.9 1015.9 1019.1 1023.9 1029.0 1028.4 1025.3 1029.0 DAY 6 1 2 12 27 2 3 24 21 25 15 23 MIN. QNH PRESSURE IN HPA 1015.1 1011.2 1010.3 1013.8 1014.0 1011.2 1006.3 1012.0 1013.2 1016.8 1013.2 1018.0 1006.3 DAY 16 4 25 24 6 29 16 3 19 12 25 5 MEAN QFF PRESSURE IN HPA 1023.9 1019.7 1016.3 1013.5 1011.7 1004.1 995.6 999.6 1007.1 1015.9 1019.8 1026.3 1012.8 MAX. QFF PRESSURE IN HPA 1029.9 1026.6 1024.7 1021.7 1016.9 1012.0 1003.2 1003.5 1016.9 1025.4 1028.9 1031.8 1031.8 DAY 7 1 3 12 27 2 3 24 21 25 27 19 MIN. QFF PRESSURE IN HPA 1012.0 1008.9 1003.9 1005.2 1005.7 995.3 988.7 994.2 999.6 1007.7 1011.2 1021.2 988.7 DAY 16 5 25 18 6 29 16 8 4 11 8 11 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 828.0 824.9 825.3 826.0 827.2 823.9 820.0 823.2 825.7 828.4 827.6 827.9 825.7 MAX. QFE PRESSURE IN HPA 833.1 830.5 831.1 831.8 831.0 828.7 824.0 826.2 830.0 834.2 833.8 830.8 834.2 DAY 6 1 2 12 27 2 3 24 12 26 15 19 MIN. QFE PRESSURE IN HPA 822.0 817.0 817.8 822.0 823.8 820.0 816.2 820.0 820.0 824.5 822.0 825.0 816.2 DAY 10 4 25 23 5 21 16 3 19 11 25 3 MEAN QNH PRESSURE IN HPA 1021.5 1017.9 1018.3 1019.1 1020.6 1016.6 1012.1 1015.8 1018.8 1022.0 1021.0 1021.4 1018.8 MAX. QNH PRESSURE IN HPA 1027.6 1024.5 1025.2 1026.0 1025.1 1022.3 1016.8 1019.4 1023.9 1028.9 1028.4 1024.8 1028.9 DAY 6 1 2 12 27 2 3 24 12 26 15 19 MIN. QNH PRESSURE IN HPA 1014.4 1008.5 1009.4 1014.4 1016.5 1012.0 1007.5 1012.0 1012.0 1017.4 1014.4 1018.0 1007.5 DAY 10 4 25 23 5 21 16 3 19 11 25 3 MEAN QFF PRESSURE IN HPA 1022.6 1018.4 1015.7 1013.2 1011.6 1004.4 995.5 999.1 1006.8 1014.9 1018.2 1024.6 1012.1 MAX. QFF PRESSURE IN HPA 1028.4 1025.6 1024.8 1022.0 1015.5 1011.8 1004.4 1003.7 1017.2 1025.3 1026.8 1030.7 1030.7 DAY 22 1 2 12 12 2 3 25 21 26 27 19 MIN. QFF PRESSURE IN HPA 1011.0 1004.5 1002.2 1005.4 1006.0 996.5 989.3 993.0 998.3 1003.7 1007.5 1020.0 989.3 DAY 11 4 25 18 2 29 16 8 19 3 23 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -5.6 2.3 4.0 9.6 16.6 21.3 24.3 23.8 19.8 12.9 5.5 3.6 11.5 MINIMUN AIR TEMPERATURE (C) -10.1 -1.6 -0.4 3.6 8.2 11.3 14.3 13.0 9.1 4.0 -1.4 -2.3 4.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH MINIMUM TEMP. <=-4 21 7 4 0 0 0 0 0 0 0 11 12 55 DAYS WITH FREEZING MIN.<= 0 27 22 16 3 0 0 0 0 0 7 19 22 116 TEMPERATURE RECORDS LOWEST(C) -22.6 -7.2 -6.0 -1.0 5.0 6.0 8.8 9.0 5.0 -3.0 -9.4 -8.8 -22.6 DAY 25 6 5 11 2 7 15 4 21 31 13 3 MAXIMUM AIR TEMPERATURE (C) 0.0 7.6 9.3 16.3 24.5 29.8 32.9 33.5 29.6 22.0 13.6 10.5 19.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 30 31 16 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 16 1 0 0 0 0 0 0 0 0 0 0 17 TEMPERATURE RECORDS HIGHEST(C) 10.6 15.8 18.6 24.0 29.4 33.0 35.2 36.4 33.6 28.0 20.0 17.0 36.4 DAY 1 9 30 30 27 23 19 11 15 1 2 29 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 9.2 9.7 12.7 16.3 18.5 18.6 20.5 20.5 18.0 15.0 12.8 15.1 MEAN DAILY TEMP. (MDT) (C) -5.1 3.0 4.5 10.0 16.4 20.5 23.6 23.3 19.3 13.0 6.1 4.1 11.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 19.2 81.7 70.0 5.1 0.0 0.0 0.0 176.0 HEATING DEG. DAYS(BASE 18 0C) 714.6 434.7 419.1 241.4 57.8 2.8 0.0 0.0 7.8 155.5 357.4 430.7 2821.8 DEWPOINT (MEAN C) -8.9 -2.0 -2.7 -0.5 3.8 5.4 7.0 5.8 2.6 0.4 -2.7 -4.2 0.3 MIXING RATIO (G/KG) 2.62 4.11 3.93 4.67 6.22 7.03 7.81 7.29 5.78 4.91 3.93 3.52 5.15 VAPOUR PRESSURE (HPA) 3.46 5.40 5.16 6.15 8.18 9.20 10.22 9.53 7.59 6.47 5.20 4.66 6.77 SATURATION DEF. (HPA) 1.19 2.13 3.33 6.52 11.99 17.82 22.04 22.48 17.49 9.70 4.51 3.71 10.24 RELATIVE HUMIDITY (MEAN %) 79 77 66 55 48 39 36 34 35 46 59 61 53 RELATIVE HUMIDITY (MAX. %) 91 94 88 83 78 61 61 53 58 74 81 85 76 RELATIVE HUMIDITY (MIN. %) 63 55 41 31 25 23 21 20 20 26 37 37 33 RELATIVE HUMIDITY (MEAN% 03UTC) 85 88 84 76 74 60 57 52 55 69 78 77 71 RELATIVE HUMIDITY (MEAN% 09UTC) 76 67 50 44 32 28 25 26 25 34 47 50 42 RELATIVE HUMIDITY (MEAN% 15UTC) 73 66 52 44 32 27 25 24 23 33 46 46 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.0 87.1 65.6 46.9 15.9 7.0 3.0 8.4 0.3 0.3 2.6 32.1 309.2 DAYS WITH PRECIPITATION >=10 1 3 2 2 0 0 0 0 0 0 0 1 9 DAYS WITH PRECIPITATION >= 5 3 6 6 2 0 1 0 1 0 0 0 1 20 DAYS WITH PRECIPITATION >= 1 10 14 13 9 6 2 1 1 0 0 2 4 62 DAYS WITH PRECIPITATION 13 17 17 14 7 2 1 2 1 3 4 7 88 GREATEST DAILY PRECIPITATION 11.0 17.4 10.5 14.0 4.0 5.0 3.0 8.0 0.3 0.2 1.3 20.0 20.0 DAY 17 11 2 3 20 26 12 30 21 14 20 21 DAY WITH THUNDER STORM 0 0 0 5 3 2 1 3 0 0 0 0 14 DAYS WITH SNOW OR SLEET 9 11 8 0 1 0 0 0 0 0 0 3 32 DAYS WITH DUST 0 0 0 0 0 0 0 0 2 1 0 0 3 WIND DIRECTION (PREVAILING) 90 45 225 225 270 225 45 90 225 225 135 270 225 PREVAILING WIND SPEED(KNOTS) 9.7 8.6 9.8 11.7 11.3 10.5 10.4 9.2 9.6 10.5 6.0 9.8 10.3 PREVAILING WIND PERCENT 5.6 6.5 10.5 12.1 8.1 9.2 8.5 8.1 8.3 8.9 2.1 4.8 6.0 CALMS PERCENT OF WIND 83.9 75.0 69.4 59.6 74.2 72.9 72.2 77.4 82.1 79.0 90.8 80.6 76.4 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 115 147 232 232 266 236 86 102 249 212 125 235 215 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.3 1.3 1.4 1.6 1.0 1.6 0.9 1.2 1.2 0.1 0.9 0.5 WIND STEADINESES (MEAN %) 56.3 13.0 46.4 35.0 61.5 41.7 64.0 42.9 75.0 60.0 16.7 50.0 22.7 WIND SPEED (MEAN KNOTS) 1.6 2.3 2.8 4.0 2.6 2.4 2.5 2.1 1.6 2.0 0.6 1.8 2.2 FASTEST WIND DIRECTION 120 210 120 270 190 210 60 90 260 210 210 160 160 FASTEST WIND SPEED (KNOTS) 17 17 19 29 23 17 27 23 17 23 12 35 35 DAY 11 9 7 8 28 4 13 14 21 13 6 29 DAYS WITH SKY CLEAR (0-2)/8 11 7 7 8 15 28 22 29 30 23 16 11 207 DAYS WITH P.CLOUDY (3-6)/8 11 10 14 13 13 1 8 2 0 8 11 15 106 DAYS WITH CLOUDY (7-8)/8 9 12 10 9 3 1 1 0 0 0 3 5 53 DAYS WITH VISIBILITY =< 2 KM 10 12 6 2 2 0 0 0 0 0 0 2 34 DURATION OF SUNSHINE HOURS 122.7 131.8 153.9 206.9 292.1 353.0 323.2 353.6 314.7 284.1 192.1 159.1 2887.2 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 826.0 823.5 822.1 824.7 826.5 823.5 823.7 823.4 824.5 827.4 830.2 828.5 825.3 MAX. QFE PRESSURE IN HPA 834.0 830.5 828.4 829.2 833.0 827.8 830.0 830.5 832.0 834.5 838.7 834.0 838.7 DAY-HOUR 26- 6 8- 6 29- 6 27-21 4-18 8- 3 3- 6 29- 6 25- 6 2- 6 18- 6 8- 6 MIN. QFE PRESSURE IN HPA 818.0 815.0 814.8 816.0 822.9 818.6 815.8 817.6 817.4 820.0 824.2 820.0 814.8 DAY-HOUR 17-12 5-12 7-15 13- 3 9-12 18-15 6-15 7-15 22- 0 27- 0 28-12 29-15 MEAN QNH PRESSURE IN HPA 1019.1 1016.2 1014.5 1017.6 1019.7 1016.2 1016.5 1016.0 1017.3 1020.8 1024.1 1022.1 1018.3 MAX. QNH PRESSURE IN HPA 1028.6 1024.5 1022.0 1022.9 1027.4 1021.3 1023.9 1024.5 1026.3 1029.2 1034.2 1028.6 1034.2 DAY-HOUR 26- 6 8- 6 29- 6 27-21 4-18 8- 3 3- 6 29- 6 25- 6 2- 6 18- 6 8- 6 MIN. QNH PRESSURE IN HPA 1009.7 1006.1 1005.9 1007.3 1015.5 1010.4 1007.0 1009.2 1008.9 1012.0 1017.0 1012.0 1005.9 DAY-HOUR 17-12 5-12 7-15 13- 3 9-12 18-15 6-15 7-15 22- 0 27- 0 28-12 29-15 MEAN QFF PRESSURE IN HPA 1026.3 1016.9 1013.9 1012.9 1009.9 1003.1 1001.3 1001.2 1005.3 1013.8 1022.7 1022.1 1012.4 MAX. QFF PRESSURE IN HPA 1044.3 1026.3 1023.8 1024.7 1020.0 1010.6 1009.6 1012.5 1016.9 1025.6 1036.2 1032.7 1044.3 DAY-HOUR 27- 6 13- 3 28-21 4- 6 4-18 8- 3 4- 3 31- 3 25- 6 19- 3 18- 3 4- 3 MIN. QFF PRESSURE IN HPA 1010.3 1004.8 1004.2 999.3 1003.7 996.4 991.8 993.4 995.3 1000.6 1012.2 1009.6 991.8 DAY-HOUR 6- 6 10- 9 25-21 13- 0 28-12 23-12 6-12 7-12 22- 0 27- 0 3-12 29-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 825.9 823.2 821.9 824.5 826.4 823.8 823.8 823.5 824.6 827.5 830.4 828.6 825.3 MAX. QFE PRESSURE IN HPA 833.0 829.0 827.4 828.2 830.2 827.5 829.6 829.0 830.4 833.7 837.0 833.0 837.0 DAY 26 24 29 30 18 8 4 30 26 2 18 4 MIN. QFE PRESSURE IN HPA 818.0 816.0 816.5 817.2 824.0 819.4 818.2 819.4 817.4 820.0 826.0 824.3 816.0 DAY 19 2 13 13 29 19 7 8 22 27 7 17 MEAN QNH PRESSURE IN HPA 1019.0 1015.9 1014.3 1017.3 1019.6 1016.5 1016.6 1016.2 1017.5 1021.0 1024.3 1022.2 1018.4 MAX. QNH PRESSURE IN HPA 1027.4 1022.7 1020.8 1021.8 1024.1 1020.9 1023.4 1022.7 1024.4 1028.3 1032.2 1027.4 1032.2 DAY 26 24 29 30 18 8 4 30 26 2 18 4 MIN. QNH PRESSURE IN HPA 1009.7 1007.3 1007.9 1008.7 1016.8 1011.3 1009.9 1011.3 1008.9 1012.0 1019.1 1017.1 1007.3 DAY 19 2 13 13 29 19 7 8 22 27 7 17 MEAN QFF PRESSURE IN HPA 1025.5 1016.1 1013.3 1012.2 1009.9 1003.7 1001.4 1001.1 1005.1 1013.1 1022.0 1021.3 1012.1 MAX. QFF PRESSURE IN HPA 1041.2 1024.9 1021.1 1022.1 1014.3 1010.4 1007.1 1008.3 1013.6 1023.2 1032.2 1028.7 1041.2 DAY 27 13 29 4 5 8 4 30 25 19 18 4 MIN. QFF PRESSURE IN HPA 1012.4 1005.0 1006.3 999.3 1004.9 997.7 994.9 995.9 995.3 1000.6 1012.9 1014.7 994.9 DAY 6 2 25 13 29 24 7 8 22 27 7 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 825.9 823.5 822.2 824.8 826.8 824.3 824.5 824.0 825.0 828.0 830.5 828.7 825.7 MAX. QFE PRESSURE IN HPA 833.2 829.0 827.7 828.4 830.0 827.8 830.0 830.0 831.0 834.1 837.6 833.4 837.6 DAY 26 24 29 28 18 8 4 29 26 2 18 4 MIN. QFE PRESSURE IN HPA 818.8 815.5 817.4 816.0 823.6 821.4 819.0 820.0 818.0 821.0 826.0 824.6 815.5 DAY 19 5 13 13 29 19 7 8 22 27 29 14 MEAN QNH PRESSURE IN HPA 1019.0 1016.2 1014.6 1017.7 1020.1 1017.2 1017.3 1016.8 1017.9 1021.5 1024.5 1022.3 1018.8 MAX. QNH PRESSURE IN HPA 1027.7 1022.7 1021.2 1022.0 1023.9 1021.3 1023.9 1023.9 1025.1 1028.7 1032.9 1027.9 1032.9 DAY 26 24 29 28 18 8 4 29 26 2 18 4 MIN. QNH PRESSURE IN HPA 1010.6 1006.7 1008.9 1007.3 1016.3 1013.7 1010.8 1012.0 1009.7 1013.2 1019.1 1017.5 1006.7 DAY 19 5 13 13 29 19 7 8 22 27 29 14 MEAN QFF PRESSURE IN HPA 1026.6 1017.2 1014.5 1013.8 1011.2 1004.7 1003.2 1003.3 1007.5 1015.9 1024.3 1023.1 1013.8 MAX. QFF PRESSURE IN HPA 1043.7 1026.3 1022.2 1023.5 1016.3 1010.6 1009.6 1012.5 1016.1 1025.6 1036.2 1032.7 1043.7 DAY 26 13 29 4 22 8 4 31 25 19 18 4 MIN. QFF PRESSURE IN HPA 1011.2 1005.4 1007.4 1000.5 1007.4 1000.0 997.5 998.1 997.0 1004.2 1014.1 1016.6 997.0 DAY 6 2 25 13 29 19 7 8 22 27 7 17 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION HAMEDAN FOROUDGAH (40768) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 34 52 N LONGITUDE 48 32 E DATA PROCESSING CENTER ELEVATION 1741.5 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 826.8 824.5 822.8 825.6 827.4 824.5 824.9 824.7 825.7 828.7 831.3 829.6 826.4 MAX. QFE PRESSURE IN HPA 834.0 830.5 828.4 829.2 831.5 827.3 830.0 830.5 832.0 834.5 838.7 834.0 838.7 DAY 26 8 29 28 18 3 3 29 25 2 18 8 MIN. QFE PRESSURE IN HPA 818.5 816.0 818.0 816.6 823.9 820.4 819.4 820.4 819.5 821.8 826.8 825.0 816.0 DAY 6 5 13 13 29 19 6 8 22 27 28 14 MEAN QNH PRESSURE IN HPA 1020.1 1017.4 1015.4 1018.7 1020.8 1017.4 1017.8 1017.6 1018.8 1022.3 1025.5 1023.4 1019.6 MAX. QNH PRESSURE IN HPA 1028.6 1024.5 1022.0 1022.9 1025.7 1020.7 1023.9 1024.5 1026.3 1029.2 1034.2 1028.6 1034.2 DAY 26 8 29 28 18 3 3 29 25 2 18 8 MIN. QNH PRESSURE IN HPA 1010.3 1007.3 1009.7 1008.0 1016.7 1012.5 1011.3 1012.5 1011.4 1014.2 1020.1 1018.0 1007.3 DAY 6 5 13 13 29 19 6 8 22 27 28 14 MEAN QFF PRESSURE IN HPA 1027.9 1018.7 1015.2 1014.2 1010.6 1004.0 1002.5 1002.5 1006.7 1015.4 1024.7 1024.2 1013.9 MAX. QFF PRESSURE IN HPA 1044.3 1026.0 1021.7 1024.7 1017.1 1009.6 1008.5 1010.8 1016.9 1024.9 1035.8 1032.7 1044.3 DAY 27 13 29 4 5 12 3 29 25 19 18 4 MIN. QFF PRESSURE IN HPA 1010.3 1008.0 1008.9 1001.2 1005.1 998.1 995.9 996.4 1000.1 1004.9 1014.6 1014.0 995.9 DAY 6 2 25 13 29 19 6 8 22 27 7 29 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 826.2 823.9 822.3 824.9 826.7 823.5 823.9 823.6 824.7 827.4 830.1 828.7 825.5 MAX. QFE PRESSURE IN HPA 833.0 830.2 827.0 828.5 830.7 826.5 830.0 829.3 831.0 832.8 837.2 833.0 837.2 DAY 26 8 29 4 17 3 3 29 25 2 18 4 MIN. QFE PRESSURE IN HPA 819.0 815.8 817.0 819.0 823.8 819.7 817.4 819.8 819.8 821.0 825.2 824.6 815.8 DAY 17 5 7 13 29 19 6 8 21 27 28 14 MEAN QNH PRESSURE IN HPA 1019.4 1016.6 1014.8 1017.8 1019.9 1016.2 1016.7 1016.3 1017.6 1020.7 1024.0 1022.4 1018.5 MAX. QNH PRESSURE IN HPA 1027.4 1024.1 1020.3 1022.1 1024.7 1019.7 1023.9 1023.1 1025.1 1027.2 1032.4 1027.4 1032.4 DAY 26 8 29 4 17 3 3 29 25 2 18 4 MIN. QNH PRESSURE IN HPA 1010.8 1007.0 1008.5 1010.8 1016.5 1011.7 1008.9 1011.8 1011.8 1013.2 1018.2 1017.5 1007.0 DAY 17 5 7 13 29 19 6 8 21 27 28 14 MEAN QFF PRESSURE IN HPA 1026.4 1017.1 1013.9 1012.6 1009.7 1002.6 1000.5 1000.4 1004.4 1012.7 1021.8 1021.8 1012.0 MAX. QFF PRESSURE IN HPA 1042.9 1024.5 1019.5 1023.7 1016.3 1008.6 1007.2 1010.1 1013.7 1021.7 1033.3 1029.4 1042.9 DAY 26 13 28 4 4 12 3 29 25 18 19 4 MIN. QFF PRESSURE IN HPA 1013.1 1004.8 1004.7 1004.4 1004.9 997.2 991.9 995.6 998.7 1003.7 1013.0 1013.0 991.9 DAY 5 10 25 13 29 23 6 8 22 27 7 29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 825.1 822.7 821.3 823.8 825.4 822.4 822.8 822.3 823.2 826.2 828.9 827.6 824.3 MAX. QFE PRESSURE IN HPA 832.0 829.0 826.0 827.7 830.0 825.5 830.0 828.0 829.0 831.0 835.3 831.8 835.3 DAY 26 8 29 7 17 7 3 29 25 1 18 4 MIN. QFE PRESSURE IN HPA 818.0 815.0 815.0 818.0 822.9 818.8 816.0 817.8 818.0 820.6 824.2 823.0 815.0 DAY 17 5 7 13 9 23 6 7 21 27 28 29 MEAN QNH PRESSURE IN HPA 1018.1 1015.2 1013.5 1016.5 1018.5 1014.9 1015.3 1014.7 1015.9 1019.3 1022.6 1021.0 1017.1 MAX. QNH PRESSURE IN HPA 1026.3 1022.7 1019.1 1021.2 1023.9 1018.6 1023.9 1021.5 1022.7 1025.1 1030.2 1026.0 1030.2 DAY 26 8 29 7 17 7 3 29 25 1 18 4 MIN. QNH PRESSURE IN HPA 1009.7 1006.1 1006.1 1009.7 1015.5 1010.6 1007.3 1009.4 1009.7 1012.7 1017.0 1015.6 1006.1 DAY 17 5 7 13 9 23 6 7 21 27 28 29 MEAN QFF PRESSURE IN HPA 1024.5 1015.3 1012.4 1011.5 1008.7 1001.9 1000.0 999.4 1003.3 1011.4 1020.2 1020.1 1010.7 MAX. QFF PRESSURE IN HPA 1040.5 1022.5 1018.4 1020