FNUS71 KAKQ 141414 FWSAKQ SPOT FORECAST FOR 1 3 8 MACKAY...US FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE WAKEFIELD VA 1014 AM EDT THU MAY 14 2009 FORECAST IS BASED ON IGNITION TIME OF 0820 EDT ON MAY 14. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL MOVE FARTHER OFF THE COAST TODAY...AS A SLOW MOVING COLD FRONT APPROACHES FROM THE WEST. THE FRONT IS EXPECTED TO STALL ACROSS CENTRAL VIRGINIA LATE TONIGHT INTO FRIDAY...BEFORE LIFTING BACK NORTH FRIDAY NIGHT INTO SATURDAY. A STRONGER COLD FRONT WILL APPROACH FROM THE WEST LATE SATURDAY...AND CROSS THE MID ATLANTIC STATES ON SUNDAY. .REST OF TODAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). A SLIGHT CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 71. MIN HUMIDITY........57 PERCENT. WIND (20FT/2MIN)....SOUTHEAST WINDS 13 TO 16 MPH WITH GUSTS UP TO 28 MPH. MIXING HEIGHT.......1000 FT AGL...INCREASING TO 3500 FT IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST 23 TO 26 MPH. VENTILATION RATE....POOR (20000-35600 FT-MPH)...INCREASING TO FAIR TO GOOD IN THE AFTERNOON (60000-80000 FT-MPH) TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P SKY (%).........63 62 60 59 60 62 64 66 68 70 69 69 WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH WEATHER TYPE....RW TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TEMP............66 67 69 70 71 70 70 69 68 66 66 66 RH..............68 62 60 57 57 60 63 65 68 75 87 87 20 FT WIND DIR..SE SE SE SE S S S S S S S S 20 FT WIND SPD..15 16 17 18 18 18 19 17 15 12 10 9 20 FT WIND GUST.30 30 30 30 30 30 30 27 26 20 20 15 MIX HGT (KFT)...1.0 2.5 3.5 3.5 3.5 3.5 2.7 2.0 2.0 0.9 0.8 0.7 MIXNG WIND DIR..S S SE SE SE SE SE SE S S S S MIXNG WIND SPD..23 24 24 25 25 26 25 24 23 21 20 17 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). A SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS. MIN TEMPERATURE.....AROUND 64. MAX HUMIDITY........93 PERCENT. WIND (20FT/2MIN)....SOUTH WINDS 7 TO 16 MPH WITH GUSTS UP TO 30 MPH...DECREASING TO AROUND 6 MPH LATE. MIXING HEIGHT.......300 FT AGL. TRANSPORT WINDS.....SOUTH 16 TO 24 MPH...DECREASING TO 8 TO 14 MPH AFTER MIDNIGHT. VENTILATION RATE....VERY POOR (1700-5300 FT-MPH). .FRIDAY... SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SCATTERED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 71. MIN HUMIDITY........80 PERCENT. WIND (20FT/2MIN)....SOUTHEAST WINDS 6 TO 7 MPH. MIXING HEIGHT.......300-800 FT AGL. TRANSPORT WINDS.....SOUTH 3 TO 6 MPH...BECOMING SOUTHEAST 3 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. VENTILATION RATE....VERY POOR (800-5200 FT-MPH). FORECASTER...FOSTER REQUESTED BY...GREG SUSZEK TYPE OF REQUEST...PRESCRIBED .TAG 20090514.138MA.01/AKQ