PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: PITTSBURGH MONTH: DECEMBER YEAR: 2007 LATITUDE: 40 30 N LONGITUDE: 80 13 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 33 20 27 -10 38 0 0.01 T 0 6.9 22 300 M M 5 6 24 280 2 53 31 42 5 23 0 0.61 0.0 0 8.4 17 230 M M 10 1 26 230 3 54 28 41 5 24 0 0.06 0.5 0 22.1 40 290 M M 10 1 47 290 4 29 23 26 -10 39 0 T 0.2 0 15.0 28 280 M M 9 35 280 5 26 14 20 -16 45 0 0.18 3.3 1 7.6 20 340 M M 8 1 22 340 6 28 7 18 -17 47 0 0.00 0.0 3 2.6 14 280 M M 5 128 17 270 7 35 21 28 -7 37 0 0.15 2.0 2 5.2 12 210 M M 10 1 15 220 8 38 33 36 1 29 0 0.07 T 1 2.7 10 310 M M 9 148 13 310 9 37 32 35 1 30 0 0.26 T 0 4.3 15 330 M M 10 128 17 330 10 37 35 36 2 29 0 0.05 0.0 0 4.1 9 300 M M 10 12 12 350 11 66 35 51 17 14 0 0.12 0.0 0 8.1 21 220 M M 10 12 31 230 12 65 32 49 16 16 0 0.25 0.0 0 10.5 23 310 M M 9 1 31 310 13 39 31 35 2 30 0 0.96 0.0 0 7.3 18 280 M M 9 16 23 280 14 38 31 35 2 30 0 T T 0 10.2 21 270 M M 10 28 280 15 34 28 31 -2 34 0 0.20 1.5 0 10.2 18 90 M M 10 126 23 90 16 39 25 32 0 33 0 0.50 0.6 0 16.5 31 270 M M 9 16 43 230 17 27 21 24 -8 41 0 T 0.1 0 13.2 29 280 M M 8 36 280 18 37 18 28 -4 37 0 0.00 0.0 0 5.9 13 200 M M 6 1 15 200 19 41 33 37 6 28 0 T T 0 9.4 18 300 M M 10 1 23 310 20 38 26 32 1 33 0 0.00 0.0 0 4.1 9 70 M M 7 18 13 30 21 44 30 37 6 28 0 0.00 0.0 0 9.2 18 110 M M 9 8 20 120 22 50 39 45 14 20 0 0.00 0.0 0 9.6 16 130 0 0 9 18 120 23 55 30 43 12 22 0 0.44 T 0 16.3 35 260 M M 9 1 45 270 24 37 28 33 3 32 0 0.00 0.0 0 11.6 23 230 M M 5 31 210 25 43 25 34 4 31 0 0.00 0.0 0 4.7 13 220 0 0 3 17 240 26 42 25 34 4 31 0 0.00 0.0 0 2.7 9 90 M M 7 18 12 90 27 40 30 35 5 30 0 0.04 T 0 5.3 13 230 M M 9 1 17 230 28 54 34 44 15 21 0 0.37 0.0 0 7.4 29 260 M M 10 18 37 270 29 50 30 40 11 25 0 0.00 0.0 0 8.4 26 270 M M 8 36 280 30 37 26 32 3 33 0 0.01 T T 4.5 13 290 M M 7 18 14 300 31 42 32 37 8 28 0 0.00 0.0 0 7.2 16 200 M M 6 18 20 200 ================================================================================ SM 1288 853 938 0 4.28 8.2 261.2 0 256 ================================================================================ AV 41.5 27.5 8.4 FASTST PSBL % 8 MAX(MPH) MISC ----> # 40 290 # 47 290 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: PITTSBURGH MONTH: DECEMBER YEAR: 2007 LATITUDE: 40 30 N LONGITUDE: 80 13 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 34.5 TOTAL FOR MONTH: 4.28 1 = FOG OR MIST DPTR FM NORMAL: 2.0 DPTR FM NORMAL: 1.42 2 = FOG REDUCING VISIBILITY HIGHEST: 66 ON 11 GRTST 24HR 0.96 ON 13-13 TO 1/4 MILE OR LESS LOWEST: 7 ON 6 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 8.2 INCHES 5 = HAIL GRTST 24HR 3.3 ON M 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 3 ON 6 7 = DUSTSTORM OR SANDSTORM: 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: 4 0.01 INCH OR MORE: 17 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 11 MIN 32 OR BELOW: 25 0.50 INCH OR MORE: 3 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 938 CLEAR (SCALE 0-3) 1 DPTR FM NORMAL -58 PTCLDY (SCALE 4-7) 10 TOTAL FM JUL 1 1920 CLOUDY (SCALE 8-10) 20 DPTR FM NORMAL -274 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] TOTAL FM JAN 1 893 HIGHEST SLP 30.61 ON 1 DPTR FM NORMAL 167 LOWEST SLP 29.32 ON 16 [REMARKS]