FNUS71 KAKQ 111504 FWSAKQ SPOT FORECAST FOR ROBBINS Q2...US FISH AND WILDLIFE SERVICE (NWR) NATIONAL WEATHER SERVICE WAKEFIELD VA 1104 AM EDT WED MAR 11 2009 FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON MARCH 11. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A COLD FRONT APPROACHES THE AREA TODAY...AND MOVES THROUGH THE REGION LATE THIS AFTERNOON OR EARLY IN THE EVENING. COOLER CONDITIONS EXPECTED BEHIND THE FRONT TONIGHT AND TOMORROW...LASTING THROUGH THE WEEKEND AS THE FRONT STALLS TO OUR SOUTH. RAIN CHANCES PERSIST THROUGH THE WEEKEND AS WELL. .REST OF TODAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). A SLIGHT CHANCE OF SHOWERS LATE. MAX TEMPERATURE.....AROUND 69. MIN HUMIDITY........47 PERCENT. WIND (20FT/2MIN)....SOUTHWEST WINDS 9 TO 11 MPH...GUSTS TO 20 MPH. MIXING HEIGHT.......1000 FT AGL...INCREASING TO 2000 FT AGL. TRANSPORT WINDS.....SOUTHWEST 14 TO 20 MPH...BECOMING WEST LATE. VENTILATION RATE....VERY POOR (11400 FT-MPH)...BECOMING POOR (34000 FT-MPH). TIME (EDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P SKY (%).........55 52 48 55 62 70 63 57 51 43 39 35 WEATHER COV..... SCH SCH SCH WEATHER TYPE.... RW RW RW RW TEMP............63 65 67 68 67 65 63 58 53 52 50 49 RH..............69 63 54 49 50 52 50 54 58 63 61 58 20 FT WIND DIR..S S S SW SW SW W W NW NW NW NW 20 FT WIND SPD..9 10 11 12 12 12 11 9 9 9 10 11 20 FT WIND GUST.18 28 20 20 20 18 17 15 15 15 15 20 MIX HGT (KFT)...1.1 1.7 1.9 2.0 2.1 1.8 1.2 0.5 0.4 0.3 0.3 0.3 0.3 MIXNG WIND DIR..SW SW SW SW SW SW W W NW NW NW NW MIXNG WIND SPD..17 18 18 19 19 17 13 8 9 15 21 26 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70 PERCENT)...THEN BECOMING PARTLY CLOUDY (30-40 PERCENT). A SLIGHT CHANCE OF SHOWERS EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 37. MAX HUMIDITY........70 PERCENT. WIND (20FT/2MIN)....NORTH WINDS 11 TO 16 MPH WITH GUSTS UP TO 25 MPH. MIXING HEIGHT.......300-1300 FT AGL...INCREASING TO 2300-3400 FT AGL AFTER MIDNIGHT. TRANSPORT WINDS.....NORTHWEST 8 TO 15 MPH...INCREASING TO NORTH 21 TO 30 MPH IN THE LATE EVENING AND OVERNIGHT. VENTILATION RATE....VERY POOR (2100-32500 FT-MPH)...INCREASING TO GOOD (60300-85600 FT-MPH) AFTER MIDNIGHT. .THURSDAY... SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT)...THEN BECOMING MOSTLY CLOUDY (70-80 PERCENT). MAX TEMPERATURE.....AROUND 45. MIN HUMIDITY........33 PERCENT. WIND (20FT/2MIN)....NORTHWEST WINDS 8 TO 12 MPH. MIXING HEIGHT.......2900-3900 FT AGL. TRANSPORT WINDS.....NORTH 14 TO 22 MPH...BECOMING NORTHWEST 8 TO 12 MPH IN THE AFTERNOON. VENTILATION RATE....VERY POOR TO FAIR (27200-56800 FT-MPH). FORECASTER...BROWN REQUESTED BY...KEITH MORRIS TYPE OF REQUEST...PRESCRIBED .TAG 20090311.ROBBI.01/AKQ