PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: BLACKSBURG MONTH: APRIL 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 44 35 40 -6 25 0 0.06 0.0 0 14.0 18 300 M M 10 33 290 2 44 34 39 -7 26 0 T 0.0 0 13.7 21 310 M M 10 29 310 3 52 37 45 -1 20 0 0.00 0.0 0 11.2 16 300 M M 10 24 300 4 47 32 40 -7 25 0 0.01 T 0 17.2 25 310 M M 8 40 310 5 47 30 39 -8 26 0 0.00 0.0 0 15.2 24 340 M M 3 40 310 6 64 29 47 0 18 0 0.00 0.0 0 6.5 10 270 M M 1 22 300 7 69 42 56 8 9 0 0.00 0.0 0 5.5 14 280 M M 4 18 280 8 70 46 58 10 7 0 0.01 0.0 0 3.7 16 330 M M 7 23 330 9 64 40 52 4 13 0 0.00 0.0 0 8.4 17 340 M M 2 22 340 10 64 33 49 1 16 0 T 0.0 0 4.1 10 100 M M 3 16 100 11 51 40 46 -3 19 0 0.18 0.0 0 4.3 9 90 M M 10 1 M M 12 42 38 40 -9 25 0 1.11 0.0 0 7.7 13 80 M M 10 1 21 90 13 61 40 51 2 14 0 0.90 0.0 0 5.1 10 270 M M 8 1 M M 14 48 37 43 -7 22 0 0.18 T 0 10.9 21 350 M M 9 14 29 330 15 63 33 48 -2 17 0 0.00 0.0 0 9.2 18 330 M M 0 25 330 16 73 31 52 2 13 0 0.00 0.0 0 2.8 10 200 M M 1 M M 17 76 37 57 7 8 0 0.00 0.0 0 4.9 15 270 M M 1 25 270 18 82 46 64 13 1 0 0.00 0.0 0 3.9 9 260 M M 1 M M 19 80 46 63 12 2 0 0.00 0.0 0 6.5 21 260 M M 2 29 240 20 77 53 65 14 0 0 0.27 0.0 0 3.2 8 310 M M 4 3 M M 21 75 48 62 10 3 0 0.00 0.0 0 4.1 16 210 M M 5 128 27 190 22 77 48 63 11 2 0 T 0.0 0 4.2 12 200 M M 2 18 200 23 77 49 63 11 2 0 0.02 0.0 0 5.2 18 270 M M 5 25 270 24 78 53 66 14 0 1 0.00 0.0 0 4.6 10 120 M M 5 M M 25 75 59 67 14 0 2 T 0.0 0 7.1 13 200 M M 8 18 24 200 26 65 43 54 1 11 0 0.82 0.0 0 4.7 9 290 M M 8 8 16 290 27 58 38 48 -5 17 0 0.01 0.0 0 9.4 16 280 M M 3 29 280 28 68 35 52 -2 13 0 0.00 0.0 0 4.5 14 270 M M 1 17 310 29 74 37 56 2 9 0 0.00 0.0 0 3.7 12 190 M M 2 18 200 30 68 44 56 2 9 0 0.00 0.0 0 4.7 14 190 M M 6 22 210 ================================================================================ SM 1933 1213 372 3 3.57 T 210.2 M 149 ================================================================================ AV 64.4 40.4 7.0 FASTST PSBL % 5 MAX(MPH) MISC ----> 25 310 # 40 310 ================================================================================ 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: 2004 LATITUDE: 37 13 N LONGITUDE: 80 25 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 52.4 TOTAL FOR MONTH: 3.57 1 = FOG DPTR FM NORMAL: 2.4 DPTR FM NORMAL: -0.26 2 = FOG REDUCING VISIBILITY HIGHEST: 82 ON 18 GRTST 24HR 1.11 ON 12-12 TO 1/4 MILE OR LESS LOWEST: 29 ON 6 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: T 5 = HAIL GRTST 24HR T 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: 0 0.01 INCH OR MORE: 11 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 6 MIN 32 OR BELOW: 4 0.50 INCH OR MORE: 3 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1 [HDD (BASE 65) ] TOTAL THIS MO. 372 CLEAR (SCALE 0-3) 13 DPTR FM NORMAL -80 PTCLDY (SCALE 4-7) 7 SEASONAL TOTAL 4969 CLOUDY (SCALE 8-10) 10 DPTR FM NORMAL -324 [CDD (BASE 65) ] TOTAL THIS MO. 3 DPTR FM NORMAL 3 [PRESSURE DATA] SEASONAL TOTAL 3 HIGHEST SLP M ON M DPTR FM NORMAL 3 LOWEST SLP M ON M [REMARKS]