PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) Station: O'HARE Month: April Year: 1998 ================================================================================ TEMPERATURE IN F : :PCPN :SNOW: WIND :SUNSHINE: SKY :PK WND <====================================Columns===================================> -1- -2- -3- -4- -5- -6a/6b- -7- -8- -9- -10- -11- -12-13- -14--15a/15b--16- Day Max Min Avg Dep HDD CDD Wtr Snw Dpth Avg Spd Dir Spd Dir Sun Wx # Tmp Tmp Tmp +/- ( in inches ) ( MPH Degrees ) Min % Code ================================================================================ 1 49 38 44 0 21 0 0.14 0.0 0 12.5 24 250 31 250 0 0 1 2 50 38 44 0 21 0 0.00 0.0 0 9.0 17 300 21 280 0 0 0 3 45 37 41 -3 24 0 0.00 0.0 0 13.6 24 020 31 010 0 0 0 4 49 32 41 -4 24 0 0.00 0.0 0 13.6 28 050 33 030 0 0 0 5 52 29 41 -4 24 0 0.00 0.0 0 7.4 13 070 22 070 0 0 0 6 62 33 48 3 17 0 0.00 0.0 0 6.9 16 100 08 160 0 0 0 7 60 44 52 6 13 0 0.81 0.0 0 14.7 25 110 30 090 0 0 31 8 52 43 48 2 17 0 0.41 0.0 0 7.9 15 070 18 060 0 0 31 9 45 41 43 -3 22 0 0.03 0.0 0 16.0 25 020 31 360 0 0 81 10 57 35 46 -1 19 0 0.00 0.0 0 7.5 16 340 25 050 0 0 8 11 66 34 50 3 15 0 0.00 0.0 0 7.3 16 260 21 260 0 0 0 12 73 55 64 17 1 0 T 0.0 0 17.3 30 170 37 170 0 0 0 13 68 55 62 14 3 0 0.18 0.0 0 16.3 25 190 34 180 0 0 1 14 68 48 58 10 7 0 T 0.0 0 10.1 20 310 23 310 0 0 81 15 61 44 53 5 12 0 0.16 0.0 0 9.2 18 030 26 040 0 0 831 16 48 36 42 -7 23 0 0.32 0.0 0 11.1 17 340 24 030 0 0 31 17 55 34 45 -4 20 0 0.00 0.0 0 9.1 21 310 24 310 0 0 0 18 60 39 50 1 15 0 0.00 0.0 0 5.8 13 120 16 130 0 0 0 19 62 41 52 2 13 0 0.00 0.0 0 4.8 14 070 25 070 0 0 0 20 65 39 52 2 13 0 0.66 0.0 0 8.0 30 260 38 250 0 0 1 21 53 47 50 -1 15 0 0.14 0.0 0 7.9 16 100 23 050 0 0 81 22 63 43 53 2 12 0 T 0.0 0 8.3 17 020 28 050 0 0 0 23 72 40 56 5 9 0 0.00 0.0 0 6.4 17 310 24 330 0 0 0 24 75 49 62 10 3 0 0.00 0.0 0 9.5 18 060 25 070 0 0 0 25 68 43 56 4 9 0 0.04 0.0 0 10.6 23 130 28 130 0 0 81 26 54 41 48 -4 17 0 0.33 0.0 0 12.4 25 070 32 090 0 0 31 27 52 37 45 -8 20 0 0.00 0.0 0 13.0 24 050 36 040 0 0 0 28 57 34 46 -7 19 0 0.03 0.0 0 8.8 17 060 29 050 0 0 0 29 62 46 54 1 11 0 0.31 0.0 0 8.1 16 040 21 040 0 0 81 30 59 50 55 2 10 0 T 0.0 0 7.2 17 070 21 070 0 0 21 ==================================================================================== Avg 58.7 40.8 49.8 ==================================================================================== PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6), Page 2 Station: O'HARE Month: April Year: 1998 ==================================================================================== {Temperature Data} {Precipitation Data} SYMBOLS USED IN COLUMN 16 Average Monthly: 49.8 Total for Month: 3.56 1 = BR Departure: 1.2 Departure: -0.08 2 = FG Highest: 75 on 24 Greatest daily: 0.81 on 7 3 = TS Lowest: 29 on 05 4 = PE {Snowfall, Ice Pellets, Hail} 5 = GR / GS 6 = FZRA / FZDZ Total for Month: 0.0 7 = DU / SS Greatest daily snowfall: 0.0 8 = FU / HZ 9 = BLSN X = FC { No. of Days with } {WEATHER - No. of Days with } { Sunshine Data } Max 32 or below: 0 0.01 inch or more Precip: 13 Total sunshine: 0 Max 90 or above: 0 0.10 inch or more Precip: 10 Sunshine %: 0 Min 32 or below: 2 0.50 inch or more Precip: 2 Min 0 or below: 0 1.00 inch or more Precip: 0 {Heating Degree Days (Base 65) } { Wind data (MPH) } Total this Month: 449 Peak wind: 38 Departure from Normal: -43 Direction: 250 Seasonal Total: 5463 Fastest 2-min wind: 30 Departure from Normal: -803 Direction: 260 Average wind: 10.0 {Cooling Degree Days (Base 65) } { Days of weather } Wx Code 1-8 Hail = 0 Total this Month: 0 Mist =14 Freezing Rain= 0 Departure from Normal: 0 Fog = 1 Dust/Sand = 0 Seasonal Total: 13 Thunder= 5 Smoke/Haze = 7 Departure from Normal: 13 Pellets= 0 Blowing Snow = 0