FNUS71 KAKQ 211154
FWSAKQ

SPOT FORECAST FOR ASIS UNITS 3 4 5 6...NPS
NATIONAL WEATHER SERVICE WAKEFIELD VA
754 AM EDT SAT MAR 21 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

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

.TODAY...

SKY/WEATHER.........SUNNY (10 PERCENT).
MAX TEMPERATURE.....AROUND 46.
MIN HUMIDITY........41 PERCENT.
WIND (20FT/2MIN)....EAST WINDS 8 TO 11 MPH.
MIXING HEIGHT.......300-1300 FT AGL...INCREASING TO 2300-3800 FT
                    AGL IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 8 TO 14 MPH.
VENTILATION RATE....VERY POOR TO POOR (2200-40500 FT-MPH).

TIME (EDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
SKY (%).........8   10  13  16  18  21  24  26  29  31  34  36
WEATHER COV.....
WEATHER TYPE....
TEMP............35  39  42  43  44  45  44  44  43  41  38  36
RH..............66  57  50  49  45  43  45  47  49  55  62  69
20 FT WIND DIR..N   NE  NE  NE  NE  NE  NE  E   E   E   E   E
20 FT WIND SPD..9   10  10  10  9   9   8   8   7   7   6   6
20 FT WIND GUST.15  15  15  15  15  15  15  15  10  10  10  10
MIX HGT (KFT)...1.3 2.3 3.3 3.4 3.6 3.8 3.4 3.0 2.6 1.8 1.0 0.3
MIXNG WIND DIR..NE  NE  NE  NE  NE  NE  NE  NE  NE  E   E   E
MIXNG WIND SPD..14  14  14  14  12  10  9   8   8   8   8   9

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........78 PERCENT.
WIND (20FT/2MIN)....SOUTHEAST WINDS 5 TO 8 MPH IN THE
                    EVENING...BECOMING LIGHT AND VARIABLE.
MIXING HEIGHT.......300-1800 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 9 MPH.
VENTILATION RATE....VERY POOR (1100-12400 FT-MPH).

.SUNDAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........42 PERCENT.
WIND (20FT/2MIN)....LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 6
                    TO 11 MPH IN THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......300-1800 FT AGL...INCREASING TO 2600-3800 FT
                    AGL LATE IN THE MORNING...THEN DECREASING TO
                    400-1600 FT AGL LATE.
TRANSPORT WINDS.....WEST 7 TO 15 MPH.
VENTILATION RATE....VERY POOR TO FAIR (1500-47000 FT-MPH).



FORECASTER...RUSNAK
REQUESTED BY...DON SAVEDGE
TYPE OF REQUEST...PRESCRIBED
.TAG 20090321.ASISU.02/AKQ