FNUS72 KCHS 281340
FWSCHS

SPOT FORECAST FOR C-83...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE CHARLESTON SC
840 AM EST SUN FEB 28 2010

...NEAR CRITICAL RELATIVE HUMIDITY THIS AFTERNOON...

FORECAST IS BASED ON IGNITION TIME OF 0830 EST ON FEBRUARY 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
DOWNSLOPE FLOW WILL MAINTAIN A VERY DRY AIRMASS ACROSS THE BURN AREA
TODAY...AND AFTERNOON RELATIVE HUMIDITY LEVELS WILL APPROACH 25 PERCENT.
ALSO...THE 12Z UPPER AIR SOUNDING SUGGESTS THAT AS THE MIXED LAYER
DEEPENS AND TAPS INTO STRONGER WINDS ALOFT...WEST WINDS WILL INCREASE
AND WILL FREQUENTLY GUST TO 15-20 MPH THIS AFTERNOON. WIND DIRECTION
COULD VARY FROM WEST SOUTHWEST TO WEST NORTHWEST...AND A FEW GUSTS TO
20-25 MPH WILL BE POSSIBLE THIS AFTERNOON. OTHERWISE...EXPECT FULL
SUNSHINE TODAY.

.TODAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........27 PERCENT.
20 FT WINDS.........WEST WINDS 6 TO 11 MPH THIS MORNING...INCREASING TO
                    11-15 MPH WITH GUSTS 15-20 MPH THIS AFTERNOON.
MIXING HEIGHT.......1000-1500 FT AGL TO START...INCREASING STEADILY TO
                    3700-5200 FT AGL IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 7 TO 8 MPH...INCREASING TO 15-20 MPH
                    IN THE LATE MORNING AND AFTERNOON.

TIME (EST)          9 AM   11 AM  1 PM   3 PM   5 PM
SKY COVER...........CLEAR  MCLEAR MCLEAR MCLEAR MCLEAR
WEATHER COV.........
WEATHER TYPE........NONE   NONE   NONE   NONE   NONE
TEMP................41     49     53     56     55
                    MIN HUMIDITY........55     37     31     28     30
WIND (20 FT)........NW 6   NW 8   W 9    W 9    W 6
20 FT WIND GUST.....15     15     20     20     15

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........82 PERCENT.
20 FT WINDS.........NORTHWEST WINDS 5 TO 6 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT AND VARIABLE...THEN
                    BECOMING NORTHWEST AROUND 5 MPH LATE.
MIXING HEIGHT.......3000-3700 FT AGL...DECREASING TO 300-900 FT AGL
                    IN THE LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....WEST AROUND 17 MPH...BECOMING NORTHWEST 3 TO 7
                    MPH IN THE LATE EVENING AND EARLY
                    MORNING...THEN BECOMING NORTH AROUND 10 MPH
                    LATE.

.MONDAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........32 PERCENT.
20 FT WINDS.........SOUTHWEST WINDS 5 TO 6 MPH.
MIXING HEIGHT.......900-1800 FT AGL...INCREASING TO 3300-4100 FT
                    AGL IN THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 6 TO 10 MPH.

$$
FORECASTER...ROWLEY
REQUESTED BY...JOE BENTON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100228.C83__.01/CHS