PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: WASHINGTON DULLES MONTH: MARCH YEAR: 2005 LATITUDE: 38 57 N LONGITUDE: 77 27 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 39 27 33 -6 32 0 T T 4 9.6 26 290 M M 8 1 37 270 2 34 25 30 -9 35 0 0.00 0.0 0 17.9 31 280 M M 6 40 280 3 36 24 30 -9 35 0 0.00 0.0 0 12.6 24 300 M M 3 31 310 4 45 19 32 -8 33 0 T 0.0 0 5.5 17 230 M M 5 20 220 5 45 29 37 -3 28 0 0.00 0.0 0 5.4 13 30 M M 7 1 15 10 6 57 27 42 2 23 0 0.00 0.0 0 9.1 22 220 M M 2 26 220 7 69 39 54 14 11 0 0.00 0.0 0 11.9 25 210 M M 5 31 220 8 60 22 41 0 24 0 0.54 1.0 1 17.0 33 310 M M 7 129 46 320 9 35 17 26 -15 39 0 0.00 0.0 0 10.7 21 280 M M 3 26 280 10 41 19 30 -11 35 0 T 0.2 0 3.5 12 290 M M 7 8 14 270 11 51 27 39 -3 26 0 T 0.0 0 5.7 21 320 M M 8 26 300 12 50 24 37 -5 28 0 T 0.0 0 9.5 23 280 M M 6 29 280 13 48 35 42 0 23 0 0.00 0.0 0 5.7 13 360 M M 8 16 10 14 46 30 38 -5 27 0 0.00 0.0 0 9.6 16 320 M M 3 8 22 330 15 49 23 36 -7 29 0 0.00 0.0 0 9.1 21 320 M M 1 8 29 280 16 47 29 38 -5 27 0 0.00 0.0 0 3.4 12 250 M M 9 8 13 320 17 47 32 40 -4 25 0 0.00 0.0 0 4.8 9 190 M M 8 12 190 18 58 25 42 -2 23 0 0.00 0.0 0 1.9 13 340 M M 2 18 17 350 19 62 29 46 2 19 0 T 0.0 0 5.2 15 200 M M 6 18 18 200 20 58 44 51 6 14 0 0.10 0.0 0 7.1 20 320 M M 9 138 25 310 21 53 36 45 0 20 0 0.00 0.0 0 8.9 18 10 M M 5 24 360 22 59 25 42 -3 23 0 0.02 0.0 0 5.0 15 210 M M 4 18 20 220 23 46 39 43 -3 22 0 1.67 0.0 0 9.0 17 70 M M 10 1 23 60 24 47 37 42 -4 23 0 0.00 0.0 0 7.0 13 340 M M 10 18 16 330 25 46 40 43 -3 22 0 0.03 0.0 0 2.1 9 10 M M 10 1 12 360 26 48 41 45 -2 20 0 0.00 0.0 0 4.4 12 80 M M 10 1 13 80 27 46 37 42 -5 23 0 0.21 0.0 0 4.6 10 50 M M 10 18 13 190 28 51 42 47 0 18 0 1.36 0.0 0 7.6 20 360 M M 10 13 26 360 29 66 47 57 9 8 0 T 0.0 0 11.6 17 330 M M 8 30 340 30 67 37 52 4 13 0 0.00 0.0 0 4.7 9 360 M M 5 M M 31 55 43 49 1 16 0 0.00 0.0 0 5.8 9 130 M M 8 8 M M ================================================================================ SM 1561 970 744 0 3.93 1.2 235.9 M 203 ================================================================================ AV 50.4 31.3 7.6 FASTST PSBL % 7 MAX(MPH) MISC ----> 33 310 46 320 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: WASHINGTON DULLES MONTH: MARCH YEAR: 2005 LATITUDE: 38 57 N LONGITUDE: 77 27 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 40.8 TOTAL FOR MONTH: 3.93 1 = FOG DPTR FM NORMAL: -2.6 DPTR FM NORMAL: 0.38 2 = FOG REDUCING VISIBILITY HIGHEST: 69 ON 7 GRTST 24HR 1.67 ON 23-23 TO 1/4 MILE OR LESS LOWEST: 17 ON 9 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 1.2 INCHES 5 = HAIL GRTST 24HR 1.0 ON 8- 8 6 = GLAZE OR RIME GRTST DEPTH: 4 ON 1 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: 7 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 5 MIN 32 OR BELOW: 18 0.50 INCH OR MORE: 3 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 2 [HDD (BASE 65) ] TOTAL THIS MO. 744 CLEAR (SCALE 0-3) 6 DPTR FM NORMAL 74 PTCLDY (SCALE 4-7) 11 SEASONAL TOTAL 4080 CLOUDY (SCALE 8-10) 14 DPTR FM NORMAL -350 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL -4 [PRESSURE DATA] SEASONAL TOTAL 0 HIGHEST SLP M ON M DPTR FM NORMAL -4 LOWEST SLP M ON M [REMARKS]