FNUS71 KAKQ 211524
FWSAKQ

SPOT FORECAST FOR PINEY GROVE PRESERVE - UNITS 20-22...TNC
NATIONAL WEATHER SERVICE WAKEFIELD VA
1124 AM EDT THU APR 21 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...GUSTY NORTH WINDS CONTINUE THROUGH MID AFTERNOON...
...RH'S FALLING TO NEAR 30 PERCENT ACROSS THE PIEDMONT...

CANADIAN HIGH PRESSURE WILL BUILD INTO THE AREA TODAY AND TONIGHT.
A FRONTAL BOUNDARY WILL LIFT NORTHWARD THROUGH THE REGION FRIDAY
AND FRIDAY NIGHT BRINGING A CHANCE OF RAIN.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........28 PERCENT.
WIND (20FT/2MIN)....NORTH WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
                    EARLY IN THE AFTERNOON.
MIXING HEIGHT.......5300-5600 FT AGL.
TRANSPORT WINDS.....NORTH 14 TO 23 MPH...DECREASING TO 9 TO 10 MPH
                    EARLY IN THE AFTERNOON.
VENTILATION RATE....VERY POOR TO GOOD (15000-63100
                    FT-MPH)...INCREASING TO POOR TO GOOD
                    (40800-69300 FT-MPH) IN THE LATE MORNING AND
                    AFTERNOON.

TIME (EDT)      12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
SKY (%).........66  52  49  46  44  41  39  36  34  39  44  50
WEATHER COV.....
WEATHER TYPE....
TEMP............64  66  67  68  69  69  67  65  61  58  54  52
RH..............41  37  33  32  30  30  33  38  46  51  57  61
20 FT WIND DIR..N   N   NE  NE  N   N   NE  NE  NE  NE  NE  NE
20 FT WIND SPD..10  10  10  9   7   5   5   4   4   3   3   3
20 FT WIND GUST.25  25  25  20  20  15  15  15  10  10  5   5
MIX HGT (KFT)...4.1 4.4 4.8 5.1 5.3 5.6 5.0 4.4 3.8 2.6 1.4 0.3
TRANSP WIND DIR.N   NE  NE  N   N   N   N   N   N   NE  NE  E
TRANSP WIND SPD.18  14  10  9   9   9   9   9   9   9   9   8

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT)...THEN BECOMING
                    MOSTLY CLOUDY (55-65 PERCENT).
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........76 PERCENT.
WIND (20FT/2MIN)....NORTH WINDS 5 TO 6 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT.
MIXING HEIGHT.......3800-5000 FT AGL...DECREASING TO 300 FT AGL.
TRANSPORT WINDS.....NORTHEAST 3 TO 12 MPH.
VENTILATION RATE....VERY POOR TO POOR (800-40000 FT-MPH).

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). A CHANCE OF RAIN
                    LATE IN THE MORNING. RAIN LIKELY EARLY IN THE
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 62.
MIN HUMIDITY........44 PERCENT.
WIND (20FT/2MIN)....EAST WINDS 5 TO 9 MPH.
MIXING HEIGHT.......700-2500 FT AGL...INCREASING TO 3300-4700 FT
                    AGL IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 14 TO 16 MPH.
VENTILATION RATE....VERY POOR TO FAIR (8200-54400
                    FT-MPH)...INCREASING TO GOOD (60300-66100
                    FT-MPH) IN THE AFTERNOON.



FORECASTER...RUSNAK
REQUESTED BY...BOBBY CLONTZ
TYPE OF REQUEST...PRESCRIBED
.TAG 20110421.PINEY.01/AKQ