PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: BLACKSBURG MONTH: DECEMBER YEAR: 2004 LATITUDE: 37 13 N LONGITUDE: 80 25 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 52 33 43 5 22 0 0.11 0.0 0 13.8 30 300 M M 5 43 300 2 53 29 41 3 24 0 0.00 0.0 0 4.1 12 300 M M 1 18 290 3 46 27 37 0 28 0 0.00 0.0 0 10.4 18 300 M M 2 29 300 4 50 21 36 -1 29 0 0.00 0.0 0 3.9 13 280 M M 1 18 270 5 57 28 43 6 22 0 0.00 0.0 0 3.5 13 270 M M 1 M M 6 46 40 43 7 22 0 0.79 0.0 0 0.2 5 110 M M 10 1 M M 7 61 45 53 17 12 0 0.01 0.0 0 6.1 15 210 M M 8 1 24 210 8 56 34 45 9 20 0 0.00 0.0 0 7.9 25 310 M M 1 35 310 9 43 35 39 4 26 0 0.61 0.0 0 1.0 6 120 M M 8 1 M M 10 52 37 45 10 20 0 0.20 0.0 0 1.8 7 280 M M 8 13 16 280 11 42 33 38 3 27 0 0.01 T 0 8.8 16 270 M M 10 28 280 12 40 31 36 1 29 0 T T 0 10.3 18 300 M M 7 24 300 13 41 25 33 -1 32 0 T T 0 15.0 22 310 M M 7 32 310 14 29 19 24 -10 41 0 T 0.3 T 11.9 18 300 M M 10 27 300 15 31 14 23 -11 42 0 0.00 0.0 0 7.4 15 320 M M 1 21 330 16 48 12 30 -4 35 0 0.00 0.0 0 1.3 6 270 M M 0 M M 17 46 22 34 0 31 0 0.00 0.0 0 4.1 12 300 M M 2 17 300 18 47 17 32 -1 33 0 0.00 0.0 0 0.8 6 220 M M 1 M M 19 38 4 21 -12 44 0 0.01 0.1 0 8.5 22 310 M M 8 35 320 20 19 0 10 -23 55 0 T T 0 8.5 20 310 M M 3 30 310 21 45 11 28 -5 37 0 0.00 0.0 0 5.6 18 260 M M 6 32 260 22 53 23 38 5 27 0 T 0.0 0 4.9 16 200 M M 5 30 200 23 55 21 38 6 27 0 0.14 0.0 0 11.5 18 290 M M 8 35 300 24 25 16 21 -11 44 0 0.00 0.0 0 4.4 9 300 M M 1 M M 25 33 8 21 -11 44 0 0.00 0.0 0 1.9 8 120 M M 1 M M 26 37 15 26 -6 39 0 T T 0 5.5 17 300 M M 5 29 300 27 30 15 23 -9 42 0 0.00 0.0 0 8.1 16 310 M M 2 27 310 28 42 12 27 -5 38 0 0.00 0.0 0 0.7 5 200 M M 0 M M 29 48 22 35 3 30 0 0.00 0.0 0 4.6 13 280 M M 5 23 280 30 56 36 46 14 19 0 T 0.0 0 2.9 7 120 M M 8 M M 31 58 31 45 14 20 0 T 0.0 0 4.9 10 250 M M 4 20 250 ================================================================================ SM 1379 716 961 0 1.88 0.4 184.3 M 139 ================================================================================ AV 44.5 23.1 5.9 FASTST PSBL % 4 MAX(MPH) MISC ----> 30 300 43 300 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: BLACKSBURG MONTH: DECEMBER YEAR: 2004 LATITUDE: 37 13 N LONGITUDE: 80 25 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 33.8 TOTAL FOR MONTH: 1.88 1 = FOG DPTR FM NORMAL: -0.3 DPTR FM NORMAL: -0.99 2 = FOG REDUCING VISIBILITY HIGHEST: 61 ON 7 GRTST 24HR 0.79 ON 6- 6 TO 1/4 MILE OR LESS LOWEST: 0 ON 20 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.4 INCH 5 = HAIL GRTST 24HR 0.3 ON 14-14 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: 5 0.01 INCH OR MORE: 8 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 5 MIN 32 OR BELOW: 23 0.50 INCH OR MORE: 2 MIN 0 OR BELOW: 1 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 961 CLEAR (SCALE 0-3) 14 DPTR FM NORMAL 2 PTCLDY (SCALE 4-7) 8 SEASONAL TOTAL 1834 CLOUDY (SCALE 8-10) 9 DPTR FM NORMAL -332 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] SEASONAL TOTAL 553 HIGHEST SLP M ON M DPTR FM NORMAL 20 LOWEST SLP M ON M [REMARKS]