FNUS71 KAKQ 221057
FWSAKQ

SPOT FORECAST FOR WASH FLATS...US FISH AND WILDLIFE
NATIONAL WEATHER SERVICE WAKEFIELD VA
657 AM EDT SUN MAR 22 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...MINIMUM RELATIVE HUMIDITY LEVELS TO DROP INTO THE 20S
AGAIN TODAY...

HIGH PRESSURE BUILDS ACROSS THE MID ATLANTIC REGION TODAY. A DRY COLD
FRONT APPROACHES FROM THE NORTH THIS EVENING...THEN PUSHES SOUTH
OF THE MID ATLANTIC WATERS MONDAY MORNING. ANOTHER CANADIAN HIGH
PRESSURE WILL BUILD ACROSS THE REGION MONDAY THROUGH THE MIDDLE OF
NEXT WEEK.


.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........37 PERCENT.
WIND (20FT/2MIN)....LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5
                    TO 10 MPH IN THE AFTERNOON.
MIXING HEIGHT.......300-2100 FT AGL...INCREASING TO 2000-2900 FT
                    AGL EARLY IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 5 TO 13 MPH.
VENTILATION RATE....VERY POOR (900-24000 FT-MPH).

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
SKY (%).........7   7   7   7   7   10  13  16  18  21  24  24
WEATHER COV.....
WEATHER TYPE....
TEMP............40  43  46  48  50  51  51  51  49  48  45  43
RH..............64  55  49  44  39  39  41  42  48  51  60  65
20 FT WIND DIR..SW  SW  SW  SW  S   S   S   SW  SW  S   S   SW
20 FT WIND SPD..4   4   5   5   6   7   8   9   8   8   7   6
20 FT WIND GUST.5   5       10  10  10  15  15  15  15  10  10
MIX HGT (KFT)...0.5 0.6 1.4 2.1 2.9 2.6 2.3 2.0 1.4 0.8 0.3 0.3
MIXNG WIND DIR..W   SW  SW  SW  SW  SW  SW  SW  SW  SW  S   SW
MIXNG WIND SPD..5   6   7   8   9   10  12  13  12  10  8   8

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........76 PERCENT.
WIND (20FT/2MIN)....WEST WINDS 5 TO 9 MPH...BECOMING NORTH 8 TO 9
                    MPH LATE.
MIXING HEIGHT.......300-1400 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 12 MPH...BECOMING NORTH 8 TO 12 MPH
                    LATE.
VENTILATION RATE....VERY POOR (1200-14100 FT-MPH).

.MONDAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 47.
MIN HUMIDITY........32 PERCENT.
WIND (20FT/2MIN)....NORTH WINDS 11 TO 16 MPH...DIMINISHING TO
                    AROUND 6 MPH LATE.
MIXING HEIGHT.......300-1900 FT AGL...INCREASING TO 2700-4600 FT
                    AGL LATE IN THE MORNING.
TRANSPORT WINDS.....NORTHWEST 14 TO 22 MPH.
VENTILATION RATE....VERY POOR TO FAIR (3200-52600
                    FT-MPH)...INCREASING TO FAIR (55300-58200
                    FT-MPH) LATE.



FORECASTER...HURLEY
REQUESTED BY...TIM CRAIG
TYPE OF REQUEST...PRESCRIBED
.TAG 20090322.WASHF.01/AKQ