PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: BLACKSBURG MONTH: APRIL YEAR: 2007 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 66 51 59 13 6 0 0.11 0.0 0 4.8 8 210 M M 7 1 18 200 2 74 45 60 14 5 0 0.00 0.0 0 5.4 15 310 M M 3 1 24 310 3 77 39 58 12 7 0 0.00 0.0 0 2.8 9 230 M M 2 18 180 4 68 39 54 7 11 0 0.00 0.0 0 12.8 18 310 M M 4 32 300 5 41 30 36 -11 29 0 T T 0 13.5 20 310 M M 7 32 300 6 42 26 34 -13 31 0 0.03 0.5 1 10.3 20 290 M M 7 29 300 7 33 21 27 -21 38 0 0.04 0.4 0 12.3 17 290 M M 8 27 290 8 43 22 33 -15 32 0 0.00 0.0 0 9.4 14 280 M M 4 21 280 9 49 24 37 -11 28 0 0.00 0.0 0 5.1 14 310 M M 2 8 17 310 10 56 22 39 -9 26 0 0.00 0.0 0 2.3 7 170 M M 1 M M 11 47 38 43 -6 22 0 0.71 0.0 0 6.3 12 110 M M 9 1 M M 12 61 39 50 1 15 0 0.05 0.0 0 10.5 21 270 M M 7 12 32 250 13 56 33 45 -4 20 0 0.00 0.0 0 13.4 24 310 M M 0 33 310 14 51 37 44 -6 21 0 0.41 0.0 0 4.6 10 70 M M 8 12 M M 15 58 35 47 -3 18 0 1.32 T 0 10.1 24 320 M M 10 123 39 310 16 51 32 42 -8 23 0 T T 0 25.5 33 320 M M 5 54 320 17 63 41 52 2 13 0 0.00 0.0 0 19.1 31 310 M M 0 47 310 18 67 39 53 2 12 0 0.00 0.0 0 8.7 16 330 M M 3 21 340 19 55 44 50 -1 15 0 0.14 0.0 0 4.5 9 100 M M 10 3 18 100 20 66 36 51 0 14 0 0.00 0.0 0 1.5 7 130 M M 4 12 M M 21 73 33 53 1 12 0 0.00 0.0 0 1.7 8 190 M M 0 M M 22 79 39 59 7 6 0 0.00 0.0 0 1.8 6 250 M M 0 9 170 23 77 41 59 7 6 0 0.00 0.0 0 5.0 14 250 M M 2 25 230 24 79 57 68 16 0 3 0.00 0.0 0 4.7 13 310 M M 3 18 270 25 83 49 66 13 0 1 0.00 0.0 0 3.8 13 210 M M 1 1 21 220 26 71 54 63 10 2 0 0.63 0.0 0 5.9 15 120 M M 6 1 M M 27 71 52 62 9 3 0 0.16 0.0 0 6.0 13 280 M M 6 12 22 270 28 65 49 57 3 8 0 0.02 0.0 0 10.1 16 270 M M 5 23 290 29 72 48 60 6 5 0 0.01 0.0 0 8.7 15 330 M M 4 24 280 30 81 44 63 9 2 0 0.00 0.0 0 5.7 13 280 M M 0 23 280 ================================================================================ SM 1875 1159 430 4 3.63 0.9 236.3 M 128 ================================================================================ AV 62.5 38.6 7.9 FASTST PSBL % 4 MAX(MPH) MISC ----> 33 M 54 M ================================================================================ 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: APRIL YEAR: 2007 LATITUDE: 37 13 N LONGITUDE: 80 25 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 50.6 TOTAL FOR MONTH: 3.63 1 = FOG OR MIST DPTR FM NORMAL: 0.6 DPTR FM NORMAL: -0.20 2 = FOG REDUCING VISIBILITY HIGHEST: 83 ON 25 GRTST 24HR 1.32 ON 15-15 TO 1/4 MILE OR LESS LOWEST: 21 ON 7 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.9 INCH 5 = HAIL GRTST 24HR 0.5 ON 6- 6 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 1 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: 0 0.01 INCH OR MORE: 12 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 7 MIN 32 OR BELOW: 7 0.50 INCH OR MORE: 3 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1 [HDD (BASE 65) ] TOTAL THIS MO. 430 CLEAR (SCALE 0-3) 12 DPTR FM NORMAL -22 PTCLDY (SCALE 4-7) 14 TOTAL FM JUL 1 4749 CLOUDY (SCALE 8-10) 4 DPTR FM NORMAL -544 [CDD (BASE 65) ] TOTAL THIS MO. 4 DPTR FM NORMAL 4 [PRESSURE DATA] TOTAL FM JAN 1 4 HIGHEST SLP M ON M DPTR FM NORMAL 4 LOWEST SLP M ON M [REMARKS]