FNUS71 KAKQ 241306 FWSAKQ SPOT FORECAST FOR SWAN POND...US FISH AND WILDLIFE SERVICE (NWR) NATIONAL WEATHER SERVICE WAKEFIELD VA 906 AM EDT TUE MAR 24 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MARCH 24. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... ...MINIMUM RELATIVE HUMIDITY LEVELS WILL BE BETWEEN 15 AND 25 PERCENT THIS AFTERNOON... CANADIAN HIGH PRESSURE REMAINS OVER THE REGION TODAY AND EARLY TOMORROW. A WARM FRONT WILL APPROACH FROM THE WEST WEDNESDAY...THEN WILL PUSH NORTHEAST OF THE REGION EARLY THURSDAY. LOW PRESSURE AND AN ASSOCIATED WARM FRONT WILL APPROACH THE MID ATLANTIC REGION FROM THE TENNESSEE VALLEY ON THURSDAY. YET ANOTHER WARM FRONT APPROACHES FROM THE SOUTHWEST ON FRIDAY...AS LOW PRESSURE DEEPENS OVER THE SOUTHERN PLAINS. THE LOW WILL LIFT INTO THE UPPER MIDWEST BY LATE SATURDAY...AS A COLD FRONT APPROACHES THE MID ATLANTIC REGION FROM THE WEST. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 47. MIN HUMIDITY........22 PERCENT. WIND (20FT/2MIN)....NORTH WINDS 6 TO 9 MPH. MIXING HEIGHT.......2000-3900 FT AGL...INCREASING TO 4100-4400 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....NORTH 13 TO 22 MPH...DECREASING TO 7 TO 12 MPH EARLY IN THE AFTERNOON. VENTILATION RATE....VERY POOR TO FAIR (26000-48300 FT-MPH). TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P SKY (%).........11 11 12 12 13 13 14 15 15 16 18 19 WEATHER COV..... WEATHER TYPE.... TEMP............40 41 43 45 45 46 46 43 39 36 35 33 RH..............31 29 27 23 23 24 24 28 34 40 43 51 20 FT WIND DIR..NE N N N N N N N N N N NE 20 FT WIND SPD..8 8 7 7 6 6 5 5 5 4 4 4 20 FT WIND GUST.15 15 15 15 10 10 10 10 10 5 5 5 MIX HGT (KFT)...3.6 3.9 4.1 4.4 4.4 4.4 4.3 3.0 1.6 0.3 0.3 0.3 MIXNG WIND DIR..NE N N N N N N N NE NE NE E MIXNG WIND SPD..15 14 13 12 10 8 7 6 6 6 6 6 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). MIN TEMPERATURE.....AROUND 29. MAX HUMIDITY........63 PERCENT. WIND (20FT/2MIN)....NORTH WINDS AROUND 5 MPH EARLY IN THE EVENING...BECOMING LIGHT AND VARIABLE. MIXING HEIGHT.......1600-3000 FT AGL...DECREASING TO 300 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....SOUTH 3 TO 6 MPH. VENTILATION RATE....VERY POOR (600-15800 FT-MPH). .WEDNESDAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). MAX TEMPERATURE.....AROUND 48. MIN HUMIDITY........41 PERCENT. WIND (20FT/2MIN)....LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST 5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 2500-2900 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....SOUTH 3 TO 10 MPH...INCREASING TO 13 TO 14 MPH LATE. VENTILATION RATE....VERY POOR (800-29100 FT-MPH). FORECASTER...MCNATT REQUESTED BY...KEITH MORRIS TYPE OF REQUEST...PRESCRIBED .TAG 20090324.SWANP.01/AKQ