FNUS71 KAKQ 041150 FWSAKQ SPOT FORECAST FOR CHAPPELL 2...VDOF NATIONAL WEATHER SERVICE WAKEFIELD VA 750 AM EDT TUE AUG 4 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON AUGUST 04. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL REMAIN IN PLACE THROUGH WEDNESDAY. ANOTHER COLD FRONT PUSHES INTO THE REGION FROM THE NORTHWEST LATE WEDNESDAY INTO THURSDAY...THEN STALLS ACROSS THE AREA THURSDAY NIGHT THROUGH FRIDAY. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). AREAS OF DENSE FOG EARLY IN THE MORNING. MAX TEMPERATURE.....AROUND 92. MIN HUMIDITY........43 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHWEST 5 TO 10 MPH. MIXING HEIGHT.......300 FT AGL...INCREASING TO 6400-7700 FT AGL. TRANSPORT WINDS.....SOUTHWEST 3 TO 12 MPH...INCREASING TO AROUND 14 MPH LATE. VENTILATION RATE....VERY POOR (800-33200 FT-MPH)...INCREASING TO GOOD (56900-85900 FT-MPH) DURING THE AFTERNOON. TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P SKY (%).........24 26 28 30 30 30 30 30 30 30 34 38 WEATHER COV..... WEATHER TYPE.... TEMP............86 89 90 91 91 91 91 89 85 81 78 76 RH..............55 50 49 47 45 45 45 48 55 63 71 76 20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW 20 FT WIND SPD..4 5 6 7 8 8 9 6 4 2 2 2 20 FT WIND GUST.10 10 10 15 15 15 15 10 10 5 5 MIX HGT (KFT)...6.4 6.8 7.3 7.7 7.6 7.4 7.3 5.0 2.6 0.3 0.3 0.3 MIXNG WIND DIR..W W SW SW SW SW SW SW SW SW W W MIXNG WIND SPD..10 10 9 8 9 12 14 15 17 17 16 13 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT)...THEN BECOMING MOSTLY CLOUDY (50-60 PERCENT)...THEN BECOMING PARTLY CLOUDY (45-55 PERCENT). MIN TEMPERATURE.....AROUND 70. MAX HUMIDITY........93 PERCENT. WIND (20FT/2MIN)....SOUTHWEST WINDS 5 TO 7 MPH EARLY IN THE EVENING...BECOMING LIGHT. MIXING HEIGHT.......5000 FT AGL...DECREASING TO 300 FT AGL. TRANSPORT WINDS.....WEST 8 TO 17 MPH...DECREASING TO 3 TO 6 MPH AFTER MIDNIGHT. VENTILATION RATE....GOOD (38300-66600 FT-MPH)...DECREASING TO VERY POOR (600-3700 FT-MPH) IN THE EVENING AND OVERNIGHT. .WEDNESDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 92. MIN HUMIDITY........45 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHWEST 5 TO 7 MPH EARLY IN THE AFTERNOON. MIXING HEIGHT.......300-2100 FT AGL...INCREASING TO 5900-6600 FT AGL. TRANSPORT WINDS.....WEST 2 TO 8 MPH. VENTILATION RATE....POOR (900-43100 FT-MPH). .FORECAST DAYS 3 THROUGH 5... .THURSDAY... MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS AROUND 70. HIGHS AROUND 90. LIGHT WINDS. .FRIDAY... MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 60S. HIGHS IN THE MID 80S. LIGHT WINDS. .SATURDAY... MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 60S. HIGHS IN THE UPPER 80S. LIGHT WINDS. FORECASTER...HURLEY REQUESTED BY...CONLEY TYPE OF REQUEST...PRESCRIBED .TAG 20090804.CHAPP.02/AKQ