FNUS71 KAKQ 191129
FWSAKQ

SPOT FORECAST FOR CHUB  SANDHILL UNIT 3 5...DCR-DNH
NATIONAL WEATHER SERVICE WAKEFIELD VA
729 AM EDT TUE APR 19 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON APRIL 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL REMAIN ANCHORED OFF THE SOUTHEAST COAST THROUGH
WEDNESDAY...AS LOW PRESSURE SLOWLY TRACKS NORTHEAST FROM THE
SOUTHERN PLAINS...BRINGING MAINLY DRY AND WARM CONDITIONS TO THE
REGION. A COLD FRONT WILL PUSH THROUGH THE MID ATLANTIC STATES
WEDNESDAY NIGHT INTO THURSDAY MORNING...BRINGING A CHANCE OF
SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL RETURN FOR THURSDAY
AFTERNOON. THERE IS A CHANCE FOR SHOWERS FRIDAY INTO SATURDAY AS A
WARM FRONT LIFTS THROUGH THE REGION.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........30 PERCENT.
WIND (20FT/2MIN)....SOUTHWEST 8 TO 12 MPH. GUSTS UP TO 25 MPH.
MIXING HEIGHT.......300-1800 FT AGL...INCREASING TO 4600-4800 FT
                    AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 21 MPH...INCREASING TO 23 TO 25
                    MPH EARLY IN THE AFTERNOON.
VENTILATION RATE....VERY POOR TO POOR (2700-43800
                    FT-MPH)...INCREASING TO GOOD (62600-106400
                    FT-MPH) IN THE AFTERNOON.

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
SKY (%).........48  47  45  44  45  46  47  47  48  49  48  47
WEATHER COV.....
WEATHER TYPE....
TEMP............75  77  80  81  82  83  84  83  80  77  74  71
RH..............50  45  42  38  34  33  32  34  41  47  53  59
20 FT WIND DIR..S   S   S   S   SW  SW  SW  SW  S   S   S   S
20 FT WIND SPD..8   9   9   10  10  10  10  8   6   3   3   4
20 FT WIND GUST.15  20  20  25  20  20  20  15  15  5   5   10
MIX HGT (KFT)...1.8 2.6 3.4 4.2 4.4 4.6 4.8 3.3 1.8 0.3 0.3 0.3
TRANSP WIND DIR.SW  SW  SW  SW  SW  SW  SW  S   S   S   S   S
TRANSP WIND SPD.17  20  21  23  24  25  25  23  20  17  17  20

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT)...THEN BECOMING
                    MOSTLY CLOUDY (45-55 PERCENT).
MIN TEMPERATURE.....AROUND 61.
MAX HUMIDITY........93 PERCENT.
WIND (20FT/2MIN)....SOUTHWEST WINDS 7 TO 9 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT...THEN BECOMING SOUTH
                    5 TO 6 MPH IN THE LATE EVENING AND OVERNIGHT.
MIXING HEIGHT.......1800-3300 FT AGL...DECREASING TO 300 FT AGL
                    EARLY IN THE EVENING.
TRANSPORT WINDS.....SOUTHWEST 17 TO 23 MPH.
VENTILATION RATE....VERY POOR TO GOOD (30000-65400
                    FT-MPH)...DECREASING TO VERY POOR (3700-4500
                    FT-MPH) EARLY IN THE EVENING.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........35 PERCENT.
WIND (20FT/2MIN)....SOUTHWEST WINDS 6 TO 15 MPH WITH GUSTS UP TO 30
                    MPH...INCREASING TO 15 TO 16 MPH WITH GUSTS UP
                    TO 30 MPH IN THE AFTERNOON. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS LATE.
MIXING HEIGHT.......300-1800 FT AGL...INCREASING TO 5400-7300 FT
                    AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 25 MPH...INCREASING TO 26 TO 29
                    MPH IN THE AFTERNOON.
VENTILATION RATE....VERY POOR TO POOR (3500-35700
                    FT-MPH)...INCREASING TO EXCELLENT (182800
                    FT-MPH).



FORECASTER...RUSNAK
REQUESTED BY...REBECCA WILSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20110419.CHUBS.01/AKQ