FNUS71 KAKQ 231139 FWSAKQ SPOT FORECAST FOR JAMES RIVER...US FISH AND WILDLIFE SERVICE (NWR) NATIONAL WEATHER SERVICE WAKEFIELD VA 739 AM EDT FRI APR 23 2010 FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON APRIL 23. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WEAK BACKDOOR FRONT WILL DROP SOUTH ACROSS THE CAROLINAS TODAY...THEN DISSIPATE. WEAK HIGH PRESSURE BUILDS INTO THE AREA FROM THE NORTH TODAY AND TONIGHT...WHILE A WARM FRONT SLOWLY APPROACHES FROM THE SOUTHWEST. ON SATURDAY...LOW PRESSURE MOVES INTO THE MID MISSISSIPPI VALLEY...AS THE WARM FRONT PUSHES INTO THE MID ATLANTIC REGION. THE LOW WILL MOVE INTO THE UPPER MIDWEST REGION BY SUNDAY MORNING...AS ANOTHER WARM FRONT EXTENDING EAST FROM THE LOW LIFTS INTO THE MID ATLANTIC REGION. THE WARM FRONT WILL LIFT NORTH OF THE AREA BY SUNDAY AFTERNOON...WHILE A COLD FRONT CROSSES THE AREA FROM THE WEST SUNDAY NIGHT. THE LOW WILL TRACK THROUGH THE NORTHERN MID ATLANTIC REGION ON MONDAY...AS ANOTHER COLD FRONT PUSHES THROUGH THE AREA. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). MAX TEMPERATURE.....AROUND 74. MIN HUMIDITY........34 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING NORTH AROUND 5 MPH IN THE AFTERNOON. MIXING HEIGHT.......300-2000 FT AGL...INCREASING TO 5700-6700 FT AGL. TRANSPORT WINDS.....WEST 3 TO 8 MPH...INCREASING TO 12 TO 16 MPH IN THE AFTERNOON. VENTILATION RATE....VERY POOR (900-26100 FT-MPH)...INCREASING TO FAIR TO GOOD (55600-92800 FT-MPH) IN THE AFTERNOON. TIME (EDT) 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID SKY (%).........54 55 57 59 61 63 65 67 70 72 75 77 WEATHER COV..... SCH SCH SCH SCH SCH WEATHER TYPE.... RN RN RN RN RN TEMP............72 73 73 72 71 70 66 63 62 59 57 56 RH..............37 35 37 38 39 42 48 54 58 67 72 74 20 FT WIND DIR..N N N NE NE NE E E E E E E 20 FT WIND SPD..3 3 3 3 4 4 4 4 3 3 3 3 20 FT WIND GUST.5 5 5 5 10 10 10 10 5 5 5 5 MIX HGT (KFT)...5.1 6.7 6.4 6.0 5.7 3.9 2.1 0.3 0.3 0.3 0.3 0.3 TRANSP WIND DIR.W W W W W NW NE E E E E E TRANSP WIND SPD.13 16 15 14 12 12 12 13 10 9 7 6 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). A SLIGHT CHANCE OF LIGHT RAIN EARLY IN THE EVENING. MIN TEMPERATURE.....AROUND 52. MAX HUMIDITY........77 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS. MIXING HEIGHT.......2100-3900 FT AGL...DECREASING TO 300 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....NORTHWEST AROUND 12 MPH...BECOMING EAST 5 TO 13 MPH. VENTILATION RATE....VERY POOR TO POOR (1000-38500 FT-MPH). .SATURDAY... SKY/WEATHER.........CLOUDY (90-100 PERCENT). A CHANCE OF RAIN EARLY IN THE MORNING. SHOWERS LIKELY IN THE AFTERNOON. MAX TEMPERATURE.....AROUND 64. MIN HUMIDITY........55 PERCENT. WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHEAST 5 TO 7 MPH IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......300-2100 FT AGL...INCREASING TO 2200-3000 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....EAST 7 TO 15 MPH...INCREASING TO 17 TO 18 MPH LATE IN THE MORNING. VENTILATION RATE....VERY POOR TO FAIR (1400-45500 FT-MPH). FORECASTER...ALEXANDER REQUESTED BY...KYLE KRZYWICKI TYPE OF REQUEST...PRESCRIBED .TAG 20100423.JAMES.01/AKQ