PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: JANUARY 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 49 21 35 12 30 0 T 0.0 0 8.6 17 150 M M 8 20 240 2 61 37 49 26 16 0 T 0.0 0 9.3 24 210 M M 8 12 30 210 3 52 30 41 18 24 0 T T 0 9.5 18 320 M M 10 4 22 20 4 33 29 31 9 34 0 0.49 5.6 M 16.0 24 40 M M 10 12 29 50 5 30 4 17 -5 48 0 T T 4 13.8 20 300 M M 8 18 24 280 6 9 -3 3 -19 62 0 0.00 0.0 3 16.2 25 260 M M 0 33 260 7 24 6 15 -7 50 0 0.00 0.0 3 8.9 15 240 M M 6 18 240 8 29 18 24 2 41 0 T T 3 6.8 16 50 M M 10 22 50 9 27 16 22 0 43 0 T 0.5 2 8.1 17 70 M M 10 1 26 60 10 27 14 21 -1 44 0 T T 3 8.9 17 210 M M 10 18 21 210 11 39 27 33 11 32 0 0.00 0.0 M 13.6 21 240 M M 7 30 240 12 39 30 35 13 30 0 T T 1 13.8 20 260 M M 7 18 24 260 13 34 25 30 9 35 0 0.00 0.0 M 10.1 25 330 M M 7 31 310 14 36 18 27 6 38 0 T T T 15.8 28 330 M M 9 148 35 340 15 25 13 19 -2 46 0 T T T 6.7 13 140 M M 6 4 21 60 16 29 24 27 6 38 0 T 0.0 0 12.8 18 120 M M 10 6 23 130 17 34 28 31 10 34 0 0.11 T 0 8.9 20 310 M M 10 1468 24 300 18 30 6 18 -3 47 0 0.00 0.0 T 14.3 24 340 M M 3 8 31 330 19 18 3 11 -11 54 0 0.00 0.0 0 9.5 15 330 M M 2 20 320 20 21 8 15 -7 50 0 0.00 0.0 T 5.4 10 340 M M 6 15 360 21 37 10 24 2 41 0 0.00 0.0 0 14.3 28 300 M M 7 35 310 22 19 3 11 -11 54 0 0.00 0.0 T 15.7 26 290 M M 3 36 300 23 24 6 15 -7 50 0 0.06 1.0 0 8.1 15 350 M M 10 1 18 340 24 22 8 15 -7 50 0 0.01 0.4 0 9.6 18 340 M M 8 1 22 10 25 22 13 18 -4 47 0 T T 1 18.0 25 100 M M 10 18 31 110 26 24 20 22 0 43 0 0.06 2.0 2 11.1 23 100 M M 10 1 29 90 27 24 10 17 -5 48 0 0.14 3.8 3 13.4 22 290 M M 8 1268 26 290 28 11 2 7 -15 58 0 T T 4 11.8 20 280 M M 6 8 23 280 29 4 -1 2 -21 63 0 0.04 1.3 3 9.6 17 320 M M 9 21 320 30 3 -9 -3 -26 68 0 0.00 0.0 3 12.1 18 270 M M 2 22 270 31 14 -6 4 -19 61 0 0.00 0.0 3 5.8 12 260 M M 5 14 260 ================================================================================ SM 850 410 1379 0 0.91 14.6 346.5 M 225 ================================================================================ AV 27.4 13.2 11.2 FASTST PSBL % 7 MAX(MPH) MISC ----> # 28 300 36 300 ================================================================================ 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: JANUARY YEAR: 2004 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 20.3 TOTAL FOR MONTH: 0.91 1 = FOG DPTR FM NORMAL: -1.7 DPTR FM NORMAL: -0.84 2 = FOG REDUCING VISIBILITY HIGHEST: 61 ON 2 GRTST 24HR 0.49 ON 4- 4 TO 1/4 MILE OR LESS LOWEST: -9 ON 30 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 14.6 INCHES 5 = HAIL GRTST 24HR 5.6 ON 4- 4 6 = GLAZE OR RIME GRTST DEPTH: 4 ON 28, 5 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: 21 0.01 INCH OR MORE: 7 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 3 MIN 32 OR BELOW: 30 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 4 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 1379 CLEAR (SCALE 0-3) 5 DPTR FM NORMAL 46 PTCLDY (SCALE 4-7) 9 SEASONAL TOTAL 3612 CLOUDY (SCALE 8-10) 17 DPTR FM NORMAL -159 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] SEASONAL TOTAL 0 HIGHEST SLP 30.51 ON 10 DPTR FM NORMAL 0 LOWEST SLP 29.61 ON 2 [REMARKS]