PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: SEPTEMBER 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 83 56 70 2 0 5 0.00 0.0 0 3.6 12 200 M M 5 1 13 190 2 84 62 73 5 0 8 0.00 0.0 0 6.5 15 130 M M 4 17 100 3 84 62 73 5 0 8 0.00 0.0 0 3.8 12 100 M M 4 18 21 60 4 83 62 73 5 0 8 0.00 0.0 0 5.1 14 110 M M 4 18 23 90 5 85 66 76 9 0 11 0.00 0.0 0 8.2 17 170 M M 7 18 21 170 6 80 56 68 1 0 3 0.07 0.0 0 10.9 21 280 M M 6 18 29 220 7 74 57 66 -1 0 1 0.00 0.0 0 9.4 16 40 M M 1 8 26 20 8 70 59 65 -1 0 0 0.00 0.0 0 13.6 25 10 M M 5 8 31 10 9 73 54 64 -2 1 0 0.00 0.0 0 6.7 14 50 M M 3 8 26 50 10 80 51 66 0 0 1 0.00 0.0 0 4.4 12 140 M M 1 1 12 140 11 83 56 70 5 0 5 0.00 0.0 0 5.4 13 210 M M 5 1 15 200 12 85 57 71 6 0 6 0.00 0.0 0 5.1 10 200 M M 1 1 14 190 13 85 57 71 6 0 6 0.00 0.0 0 8.4 18 170 M M 2 18 23 170 14 85 64 75 10 0 10 0.00 0.0 0 11.0 18 170 M M 3 18 23 170 15 86 68 77 13 0 12 0.19 0.0 0 13.1 26 190 M M 6 18 31 180 16 73 58 66 2 0 1 0.00 0.0 0 7.7 15 310 M M 4 20 30 17 70 53 62 -1 3 0 0.00 0.0 0 8.2 24 60 M M 3 32 60 18 77 51 64 1 1 0 0.00 0.0 0 5.8 15 100 M M 6 23 70 19 79 56 68 5 0 3 0.00 0.0 0 9.2 15 150 M M 2 18 130 20 78 50 64 2 1 0 0.00 0.0 0 8.2 15 120 M M 1 20 180 21 82 51 67 5 0 2 0.00 0.0 0 5.3 14 180 M M 0 20 220 22 82 50 66 4 0 1 0.00 0.0 0 5.6 12 210 M M 3 1 14 200 23 85 54 70 9 0 5 0.00 0.0 0 7.4 18 180 M M 3 18 24 170 24 82 56 69 8 0 4 0.00 0.0 0 8.9 20 270 M M 6 25 250 25 73 51 62 1 3 0 0.00 0.0 0 6.3 17 360 M M 3 23 310 26 72 46 59 -1 6 0 0.00 0.0 0 4.8 13 60 M M 1 1 24 50 27 76 45 61 1 4 0 0.00 0.0 0 2.3 10 90 M M 2 17 70 28 66 52 59 0 6 0 T 0.0 0 16.5 32 10 M M 6 39 10 29 65 43 54 -5 11 0 0.00 0.0 0 7.8 16 60 M M 3 26 70 30 72 36 54 -5 11 0 0.00 0.0 0 3.7 12 170 M M 1 18 13 170 ================================================================================ SM 2352 1639 47 100 0.26 0.0 222.9 M 101 ================================================================================ AV 78.4 54.6 7.4 FASTST PSBL % 3 MAX(MPH) MISC ----> 32 10 39 10 ================================================================================ 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: SEPTEMBER YEAR: 2004 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 66.5 TOTAL FOR MONTH: 0.26 1 = FOG DPTR FM NORMAL: 2.7 DPTR FM NORMAL: -3.01 2 = FOG REDUCING VISIBILITY HIGHEST: 86 ON 15 GRTST 24HR 0.19 ON 14-15 TO 1/4 MILE OR LESS LOWEST: 36 ON 30 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.0 INCH 5 = HAIL GRTST 24HR 0.0 6 = GLAZE OR RIME GRTST DEPTH: 0 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: 2 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 1 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 47 CLEAR (SCALE 0-3) 17 DPTR FM NORMAL -65 PTCLDY (SCALE 4-7) 13 SEASONAL TOTAL 89 CLOUDY (SCALE 8-10) 0 DPTR FM NORMAL -38 [CDD (BASE 65) ] TOTAL THIS MO. 100 DPTR FM NORMAL 9 [PRESSURE DATA] SEASONAL TOTAL 610 HIGHEST SLP M ON M DPTR FM NORMAL -210 LOWEST SLP M ON M [REMARKS]