FNUS71 KAKQ 051557
FWSAKQ

SPOT FORECAST FOR PINEY GROVE PRESERVE - UNIT 41...TNC
NATIONAL WEATHER SERVICE WAKEFIELD VA
1157 AM EDT THU MAY 5 2011

FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON MAY 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE BUILDS OVER THE MID ATLANTIC REGION TODAY AND
TONIGHT...BEFORE MOVING OFF THE COAST FRIDAY. A WEAK DISORGANIZED
AREA OF LOW PRESSURE APPROACHES FROM THE WEST EARLY FRIDAY AND
CROSSES THE REGION DURING THE AFTERNOON AND EVENING. HIGH PRESSURE
RETURNS LATER FRIDAY NIGHT AND SATURDAY. ANOTHER LOW PRESSURE SYSTEM
MOVES ACROSS THE REGION SATURDAY NIGHT INTO SUNDAY.

.REST OF TODAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........25 PERCENT.
WIND (20FT/2MIN)....NORTHWEST WINDS AROUND 9 MPH.
MIXING HEIGHT.......7800-8500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 16 TO 20 MPH.
VENTILATION RATE....EXCELLENT (113300-138900 FT-MPH).

TIME (EDT)      1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID
SKY (%).........0   0   1   3   4   3   2   1   1   1   1   1
WEATHER COV.....
WEATHER TYPE....
TEMP............66  67  68  69  69  68  65  61  57  53  50  48
RH..............28  26  26  26  27  29  34  41  47  54  61  65
20 FT WIND DIR..NW  NW  NW  NW  W   W   W   W   W   W   W   W
20 FT WIND SPD..10  10  10  9   8   7   5   4   3   3   3   3
20 FT WIND GUST.20  20  20  20  15  15  10  10  5   5   5   5
MIX HGT (KFT)...7.8 8.5 8.4 8.3 8.3 5.6 2.9 0.3 0.3 0.3 0.3 0.3
TRANSP WIND DIR.NW  NW  NW  NW  NW  NW  W   W   W   SW  SW  SW
TRANSP WIND SPD.20  18  18  17  16  16  15  14  12  8   6   6

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 43.
MAX HUMIDITY........82 PERCENT.
WIND (20FT/2MIN)....WEST WINDS 5 TO 8 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT.
MIXING HEIGHT.......5600 FT AGL...DECREASING TO 300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 16 MPH...DECREASING TO 6 TO 7
                    MPH LATE IN THE EVENING.
VENTILATION RATE....POOR TO GOOD (38700-75500 FT-MPH)...DECREASING
                    TO VERY POOR (1200-3100 FT-MPH) EARLY IN THE
                    EVENING.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). A CHANCE OF
                    SHOWERS AND THUNDERSTORMS LATE.
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........32 PERCENT.
WIND (20FT/2MIN)....LIGHT WINDS...BECOMING SOUTHWEST 5 TO 12 MPH
                    WITH GUSTS UP TO 20 MPH IN THE LATE MORNING AND
                    AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS LATE.
MIXING HEIGHT.......300 FT AGL...INCREASING TO 8700-10200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 15 MPH...INCREASING TO 17 TO 21
                    MPH LATE IN THE MORNING.
VENTILATION RATE....VERY POOR (1500-26500 FT-MPH)...INCREASING TO
                    EXCELLENT (174100 FT-MPH).



FORECASTER...FOSTER
REQUESTED BY...BOBBY CLONTZ
TYPE OF REQUEST...PRESCRIBED
.TAG 20110505.PINEY.02/AKQ