FNUS71 KAKQ 041148
FWSAKQ

SPOT FORECAST FOR NATIVE GRASS FIELDS...US FWS
NATIONAL WEATHER SERVICE WAKEFIELD VA
648 AM EST WED NOV 4 2009

FORECAST IS BASED ON IGNITION TIME OF 1130 EST ON NOVEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE BUILDS OVER THE REGION THIS MORNING...THEN MOVES OFF
THE COAST THIS AFTERNOON. LOW PRESSURE ACROSS THE LOWER GREAT LAKES
REGION TODAY...MOVES RAPIDLY SOUTHEAST AND ACROSS THE MID ATLANTIC
REGION TONIGHT. THIS LOW WILL DRAG ANOTHER COLD FRONT ACROSS THE
AREA LATE TONITE AND THURSDAY MORNING. HIGH PRESSURE RETURNS LATE
THURSDAY THROUGH THE WEEKEND.

.TODAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........46 PERCENT.
WIND (20FT/2MIN)....EAST WINDS 7 TO 16 MPH WITH GUSTS UP TO 25 MPH.
MIXING HEIGHT.......2100-3900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 12 TO 21 MPH...BECOMING SOUTHEAST 7
                    TO 10 MPH IN THE AFTERNOON.
VENTILATION RATE....VERY POOR TO POOR (24400-43800 FT-MPH).

TIME (EST)      11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
SKY (%).........11  13  19  25  31  37  43  49  58  66  75  83
WEATHER COV.....
WEATHER TYPE....
TEMP............63  63  63  63  63  62  62  61  60  60  60  60
RH..............50  48  50  52  56  56  60  64  64  64  67  67
20 FT WIND DIR..NE  NE  NE  E   E   E   E   E   E   SE  SE  SE
20 FT WIND SPD..9   8   6   7   7   8   8   9   9   9   9   10
20 FT WIND GUST.15  15  10  10  10  15  15  15  15  15  15  20
MIX HGT (KFT)...3.8 3.9 3.9 3.8 3.6 3.5 3.1 2.7 2.2 1.6 1.0 0.4
TRANSP WIND DIR.E   E   E   E   SE  SE  SE  SE  S   S   S   S
TRANSP WIND SPD.12  9   8   8   9   10  12  14  15  16  17  20

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT)...THEN BECOMING
                    MOSTLY CLOUDY (75-85 PERCENT). A CHANCE OF
                    SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 58.
MAX HUMIDITY........67 PERCENT.
WIND (20FT/2MIN)....SOUTHWEST WINDS 9 TO 14 MPH...BECOMING WEST 14
                    TO 15 MPH WITH GUSTS UP TO 25 MPH LATE.
MIXING HEIGHT.......1000-2700 FT AGL...DECREASING TO 300-400 FT AGL
                    IN THE LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....SOUTH 12 TO 20 MPH...BECOMING WEST 23 TO 25 MPH
                    AFTER MIDNIGHT.
VENTILATION RATE....VERY POOR (5300-27900 FT-MPH).

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT)...THEN BECOMING
                    MOSTLY SUNNY (30-40 PERCENT). A CHANCE OF
                    SHOWERS EARLY IN THE MORNING.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........46 PERCENT.
WIND (20FT/2MIN)....NORTHWEST WINDS 16 TO 17 MPH.
MIXING HEIGHT.......500-1600 FT AGL...INCREASING TO 4500-6000 FT
                    AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 21 MPH.
VENTILATION RATE....VERY POOR TO FAIR (8700-52000
                    FT-MPH)...INCREASING TO GOOD (61800-80900
                    FT-MPH) LATE IN THE MORNING.



FORECASTER...RUSNAK
REQUESTED BY...JON BECK
TYPE OF REQUEST...PRESCRIBED
.TAG 20091104.NATIV.01/AKQ