PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: PITTSBURGH PA MONTH: DECEMBER YEAR: 2009 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 12Z AVG MX 2MIN DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR ================================================================================ 1 47 33 40 3 25 0 0.00 0.0 0 8.9 17 230 M M 5 24 220 2 55 31 43 6 22 0 0.26 0.0 0 6.0 24 120 M M 9 1 30 120 3 55 39 47 11 18 0 0.28 0.0 0 11.3 25 240 M M 10 1 36 240 4 39 28 34 -2 31 0 0.00 0.0 0 6.4 17 270 M M 7 23 230 5 31 21 26 -10 39 0 0.02 0.1 0 5.9 10 300 M M 8 18 15 350 6 30 18 24 -11 41 0 0.00 0.0 0 4.4 10 210 M M 6 18 13 220 7 34 23 29 -6 36 0 T T 0 4.2 14 260 M M 10 8 20 250 8 38 29 34 -1 31 0 0.33 0.3 0 8.0 18 120 M M 9 14 24 120 9 59 31 45 11 20 0 0.85 T 0 19.2 36 270 M M 9 1 51 260 10 31 15 23 -11 42 0 T T 0 15.7 29 260 M M 9 40 250 11 29 15 22 -12 43 0 0.00 0.0 0 12.1 28 270 M M 2 38 280 12 38 17 28 -5 37 0 0.00 0.0 0 3.2 12 160 M M 3 17 150 13 47 27 37 4 28 0 0.23 0.1 0 4.3 18 290 M M 9 16 23 280 14 53 37 45 12 20 0 T 0.0 0 4.8 14 230 M M 10 1 21 210 15 50 28 39 6 26 0 0.01 T 0 12.0 26 290 M M 10 1 33 300 16 30 20 25 -7 40 0 T T 0 9.7 21 280 M M 4 25 280 17 32 17 25 -7 40 0 0.00 0.0 0 2.4 7 100 M M 6 12 360 18 38 25 32 0 33 0 0.03 0.3 0 4.7 10 60 M M 9 1 14 80 19 30 24 27 -4 38 0 0.41 4.7 2 7.8 14 50 M M 10 1 20 60 20 31 19 25 -6 40 0 0.01 0.1 4 6.0 12 280 M M 9 1 15 290 21 32 27 30 -1 35 0 0.01 0.5 4 6.0 15 300 M M 10 18 17 300 22 32 27 30 -1 35 0 0.01 0.1 0 5.3 10 360 M M 10 18 15 10 23 29 16 23 -8 42 0 0.00 0.0 3 3.7 10 360 M M 5 15 30 24 38 14 26 -4 39 0 0.00 0.0 2 7.2 15 80 M M 6 18 90 25 45 33 39 9 26 0 0.70 T 1 12.7 21 100 M M 10 1 28 100 26 45 29 37 7 28 0 0.01 0.0 0 5.8 16 150 M M 5 1 29 140 27 42 30 36 6 29 0 0.02 0.2 0 6.6 17 230 M M 6 1 23 260 28 31 20 26 -3 39 0 0.14 2.2 1 13.8 26 300 M M 10 1 32 290 29 24 9 17 -12 48 0 0.01 0.3 2 11.3 28 300 M M 6 189 32 320 30 33 9 21 -8 44 0 0.00 0.0 1 3.3 9 120 M M 8 12 160 31 37 31 34 5 31 0 0.20 1.9 3 4.7 14 190 M M 10 1 18 190 ================================================================================ SM 1185 742 1046 0 3.53 10.8 237.4 M 240 ================================================================================ AV 38.2 23.9 7.7 FASTST M M 8 MAX(MPH) MISC ----> # 36 270 # 51 260 ================================================================================ 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 PA MONTH: DECEMBER YEAR: 2009 LATITUDE: 40 30 N LONGITUDE: 80 13 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 31.1 TOTAL FOR MONTH: 3.53 1 = FOG OR MIST DPTR FM NORMAL: -1.4 DPTR FM NORMAL: 0.67 2 = FOG REDUCING VISIBILITY HIGHEST: 59 ON 9 GRTST 24HR 1.18 ON 8- 9 TO 1/4 MILE OR LESS LOWEST: 9 ON 30,29 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 10.8 INCHES 5 = HAIL GRTST 24HR 4.7 ON M 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 4 ON 21,20 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: 13 0.01 INCH OR MORE: 18 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 9 MIN 32 OR BELOW: 27 0.50 INCH OR MORE: 2 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 1046 CLEAR (SCALE 0-3) 2 DPTR FM NORMAL 50 PTCLDY (SCALE 4-7) 11 TOTAL FM JUL 1 2081 CLOUDY (SCALE 8-10) 18 DPTR FM NORMAL -113 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] TOTAL FM JAN 1 631 HIGHEST SLP 30.56 ON 12 DPTR FM NORMAL -95 LOWEST SLP 29.05 ON 9 [REMARKS]