FNUS71 KAKQ 201216 FWSAKQ SPOT FORECAST FOR PINEY GROVE UNIT 6...US FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE WAKEFIELD VA 816 AM EDT WED MAY 20 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MAY 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... ...DRY WITH LOW RELATIVE HUMIDITY EXPECTED AGAIN TODAY... HIGH PRESSURE REMAINS CENTERED OFF THE NORTHERN MID ATLANTIC COAST THOUGH FRIDAY. A COLD FRONT APPROACHES FROM THE NORTH ON SATURDAY. AFTERNOON RELATIVE HUMIDITIES WILL DROP TO BETWEEN 20 AND 30 PERCENT OVER MUCH OF THE INTERIOR PORTIONS OF THE REGION WEDNESDAY...ALTHOUGH WIND SPEEDS WILL BE LIGHT. .TODAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........68 AT IGNITION...MAX 77. RH..................40 PERCENT AT IGNITION...MIN 27 PERCENT. WIND (20FT/2MIN)....WINDS NORTHEAST AT 7 MPH AT IGNITION...OTHERWISE LIGHT WINDS...BECOMING EAST 5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......300-1300 FT AGL...INCREASING TO 3400 FT AGL AT IGNITION...OTHERWISE 2400-4200 FT AGL IN THE LATE MORNING AND AFTERNOON. TRANSPORT WINDS.....EAST 6 TO 14 MPH. VENTILATION RATE....POOR /37800 FT-MPH/ AT IGNITION. MAX...FAIR /50400 FT-MPH/. TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P SKY (%).........0 0 0 0 0 0 0 0 0 0 0 0 WEATHER COV..... WEATHER TYPE.... TEMP............69 72 74 75 76 77 77 76 73 69 64 58 RH..............40 35 33 31 30 29 29 32 38 47 56 69 20 FT WIND DIR..E E E E E E E E E E E E 20 FT WIND SPD..6 6 7 7 7 6 6 5 3 3 3 2 20 FT WIND GUST.15 15 15 15 15 15 15 10 5 5 5 5 MIX HGT (KFT)...3.4 3.7 3.9 4.2 4.2 4.1 4.1 3.6 3.0 2.5 1.7 1.0 MIXNG WIND DIR..E E E E E E E E E E E E MIXNG WIND SPD..13 14 14 14 14 13 12 13 13 13 12 9 .TONIGHT... SKY/WEATHER.........CLEAR (0-5 PERCENT). TEMPERATURE.........MIN 47. RH..................MAX 100 PERCENT. WIND (20FT/2MIN)....EAST WINDS AROUND 6 MPH EARLY IN THE EVENING...BECOMING LIGHT. MIXING HEIGHT.......1700-3600 FT AGL...DECREASING TO 300-1000 FT AGL IN THE LATE EVENING AND OVERNIGHT. TRANSPORT WINDS.....EAST 5 TO 13 MPH...BECOMING NORTHEAST 3 TO 5 MPH AFTER MIDNIGHT. VENTILATION RATE....VERY POOR TO POOR (700-38000 FT-MPH). .THURSDAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........MAX 82. RH..................MIN 38 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHEAST 5 TO 7 MPH LATE IN THE MORNING. MIXING HEIGHT.......300-1400 FT AGL...INCREASING TO 4500-4600 FT AGL. TRANSPORT WINDS.....SOUTHEAST 6 TO 8 MPH. VENTILATION RATE....VERY POOR (1100-30800 FT-MPH). FORECASTER...RUSNAK REQUESTED BY...TIMOTHY CRAIG TYPE OF REQUEST...PRESCRIBED .TAG 20090520.PINEY.01/AKQ