FNUS71 KAKQ 071229 FWSAKQ SPOT FORECAST FOR PINEY GROVE PRESERVE - 53...TNC NATIONAL WEATHER SERVICE WAKEFIELD VA 829 AM EDT THU APR 7 2011 FORECAST IS BASED ON IGNITION TIME OF 0850 EDT ON APRIL 07. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE MOVES OFF THE MID ATLANTIC COAST TODAY. A BACKDOOR COLD FRONT DROPS SOUTH THROUGH THE REGION TONIGHT...THEN STALLS ACROSS THE CAROLINAS THROUGH SATURDAY AS LOW PRESSURE MOVES EAST ALONG IT. THE FRONT LIFTS BACK NORTH AS A WARM FRONT SATURDAY NIGHT AND SUNDAY. HIGH PRESSURE BUILDS OVER THE AREA LATE SUNDAY. ANOTHER COLD FRONT APPROACHES FROM THE WEST EARLY NEXT WEEK. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). TEMPERATURE.........51 AT IGNITION...MAX 76. RH..................71 PERCENT AT IGNITION...MIN 30 PERCENT. WIND (20FT/2MIN)....WINDS SOUTHWEST AT 8 MPH AT IGNITION...OTHERWISE WEST WINDS 7 TO 9 MPH. MIXING HEIGHT.......700 FT AGL AT IGNITION...OTHERWISE 300-1700 FT AGL...INCREASING TO 6700-7000 FT AGL. TRANSPORT WINDS.....WEST 14 TO 16 MPH. VENTILATION RATE....VERY POOR /9200 FT-MPH/ AT IGNITION. MAX...POOR /44800 FT-MPH/...INCREASING TO GOOD (69300-94800 FT-MPH) IN THE AFTERNOON. TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM SKY (%).........30 32 33 34 35 37 44 52 59 67 74 82 WEATHER COV..... WEATHER TYPE.... TEMP............51 59 65 69 72 74 75 76 76 76 74 71 RH..............71 63 49 43 37 35 33 32 32 35 41 52 20 FT WIND DIR..SW SW SW SW SW SW W W W W W SW 20 FT WIND SPD..7 8 8 8 7 6 6 6 6 6 5 3 20 FT WIND GUST.15 15 15 15 15 15 15 15 15 15 10 10 MIX HGT (KFT)...0.7 1.2 1.7 3.3 5.0 6.7 6.8 6.9 7.0 7.0 4.8 2.5 TRANSP WIND DIR.SW SW SW W W W W W W SW SW SW TRANSP WIND SPD.15 15 15 15 16 16 16 16 15 14 12 9 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). TEMPERATURE.........MIN 49. RH..................MAX 83 PERCENT. WIND (20FT/2MIN)....WEST WINDS AROUND 6 MPH EARLY IN THE EVENING...BECOMING LIGHT...THEN BECOMING EAST 5 TO 8 MPH LATE IN THE EVENING. MIXING HEIGHT.......4800 FT AGL...DECREASING TO 300 FT AGL. TRANSPORT WINDS.....NORTHEAST 3 TO 12 MPH...INCREASING TO AROUND 14 MPH LATE. VENTILATION RATE....VERY POOR TO FAIR (700-50000 FT-MPH). .FRIDAY... SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN LIKELY EARLY IN THE AFTERNOON. TEMPERATURE.........MAX 58. RH..................MIN 66 PERCENT. WIND (20FT/2MIN)....EAST WINDS 8 TO 10 MPH. MIXING HEIGHT.......600-2400 FT AGL...INCREASING TO 2600-3000 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....EAST 17 TO 24 MPH. VENTILATION RATE....VERY POOR TO FAIR (9100-55800 FT-MPH)...INCREASING TO FAIR TO GOOD (47300-63300 FT-MPH) IN THE AFTERNOON. FORECASTER...FOSTER REQUESTED BY...BOBBY CLONTZ TYPE OF REQUEST...PRESCRIBED .TAG 20110407.PINEY.01/AKQ