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