PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: MARCH YEAR: 2004 LATITUDE: 41 58 N LONGITUDE: 87 54 W TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND ================================================================================ 1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18 AVG MX 2MIN DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR ================================================================================ 1 62 45 54 22 11 0 0.19 T 0 15.2 31 200 M M 9 1358 41 200 2 48 39 44 12 21 0 T 0.0 0 12.0 22 240 M M 10 18 29 260 3 47 38 43 10 22 0 T 0.0 0 5.1 10 200 M M 10 18 14 210 4 44 38 41 8 24 0 0.51 0.0 0 9.5 22 60 M M 10 18 29 70 5 61 39 50 17 15 0 0.49 0.0 0 17.0 38 240 M M 10 1 54 230 6 45 37 41 7 24 0 T 0.0 0 10.3 18 260 M M 9 22 190 7 45 34 40 6 25 0 0.02 0.0 0 21.0 36 300 M M 10 47 290 8 39 29 34 0 31 0 0.00 0.0 0 9.0 20 310 M M 8 24 310 9 38 27 33 -2 32 0 T T 0 7.6 16 10 M M 6 28 60 10 49 25 37 2 28 0 T 0.0 0 12.5 26 210 M M 4 32 210 11 43 18 31 -5 34 0 T T 0 18.3 33 260 M M 6 43 260 12 33 16 25 -11 40 0 T T 0 10.1 20 300 M M 3 26 300 13 47 18 33 -3 32 0 0.01 0.0 0 10.4 22 160 M M 6 28 190 14 43 34 39 2 26 0 0.07 0.0 0 17.3 36 270 M M 7 1 45 280 15 36 27 32 -5 33 0 T 0.2 0 9.7 17 40 M M 7 1 30 60 16 33 30 32 -5 33 0 0.02 0.7 1 9.7 18 60 M M 10 1 28 60 17 36 27 32 -6 33 0 0.07 0.8 0 5.8 12 160 M M 9 18 13 160 18 40 23 32 -6 33 0 0.11 0.5 0 7.9 21 340 M M 8 18 28 320 19 52 24 38 0 27 0 0.00 0.0 0 10.8 23 180 M M 3 13 28 160 20 62 32 47 8 18 0 T 0.0 0 18.7 38 300 M M 7 3 51 310 21 33 22 28 -11 37 0 T T 0 12.2 22 340 M M 7 26 40 22 40 19 30 -9 35 0 0.00 0.0 0 7.9 16 270 M M 3 22 260 23 60 32 46 6 19 0 0.00 0.0 0 10.3 18 210 M M 7 24 210 24 63 44 54 14 11 0 0.25 T 0 10.9 24 170 M M 10 135 28 170 25 62 57 60 19 5 0 0.03 0.0 0 12.1 20 190 M M 10 1 24 190 26 67 45 56 15 9 0 0.24 0.0 0 8.7 18 250 M M 10 1 24 250 27 60 41 51 10 14 0 0.00 0.0 0 8.8 17 130 M M 10 128 23 80 28 74 48 61 19 4 0 0.67 0.0 0 15.7 30 180 M M 9 138 38 180 29 61 41 51 9 14 0 0.00 0.0 0 7.4 17 260 M M 3 24 280 30 57 38 48 6 17 0 0.00 0.0 0 11.0 28 10 M M 8 38 40 31 48 36 42 0 23 0 T 0.0 0 14.0 23 20 M M 9 28 20 ================================================================================ SM 1528 1023 730 0 2.68 2.2 356.9 M 238 ================================================================================ AV 49.3 33.0 11.5 FASTST PSBL % 8 MAX(MPH) MISC ----> # 38 300 54 230 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: CHICAGO-OHARE MONTH: MARCH YEAR: 2004 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 41.2 TOTAL FOR MONTH: 2.68 1 = FOG DPTR FM NORMAL: 3.9 DPTR FM NORMAL: 0.03 2 = FOG REDUCING VISIBILITY HIGHEST: 74 ON 28 GRTST 24HR 1.00 ON 4- 5 TO 1/4 MILE OR LESS LOWEST: 16 ON 12 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 2.2 INCHES 5 = HAIL GRTST 24HR 0.8 ON 17 6 = GLAZE OR RIME GRTST DEPTH: 1 ON 16 7 = BLOWING DUST OR SAND: VSBY 1/2 MILE OR LESS 8 = SMOKE OR HAZE [NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW X = TORNADO MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 13 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 7 MIN 32 OR BELOW: 15 0.50 INCH OR MORE: 2 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 730 CLEAR (SCALE 0-3) 4 DPTR FM NORMAL -128 PTCLDY (SCALE 4-7) 9 SEASONAL TOTAL 5428 CLOUDY (SCALE 8-10) 18 DPTR FM NORMAL -276 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL -1 [PRESSURE DATA] SEASONAL TOTAL 0 HIGHEST SLP M ON M DPTR FM NORMAL -1 LOWEST SLP M ON M [REMARKS]