FNUS72 KCHS 191321
FWSCHS

SPOT FORECAST FOR SAR IMP 17   18...U.S. FISH AND WILDLIFE SERVICE
NATIONAL WEATHER SERVICE CHARLESTON SC
821 AM EST FRI NOV 19 2010

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

.DISCUSSION...
THE 12Z CHARLESTON UPPER AIR SOUNDING DEPICTED A SHALLOW SURFACE
BASED INVERSION AROUND 500 FT AGL DEEP WHICH WILL BREAK BY THE IGNITION
TIME OF 1100. UNTIL THAT TIME...VARIABLE WINDS WILL REMAIN 5 MPH OR
LESS. AFTER THE INVERSION BREAKS...HIGH PRESSURE CENTERED NORTH OF THE
REGION WILL PRODUCE NORTHEAST WINDS 10 MPH OR LESS...AND THE RELATIVE
HUMIDITY WILL FALL INTO THE 35-40 PERCENT RANGE INTO EARLY AFTERNOON.
DURING THE 1300-1500 TIME FRAME...THE SEA BREEZE WILL PUSH INLAND AND
WINDS SHOULD VEER TOWARD THE EAST AND COULD BRIEFLY INCREASE TO 10-15 MPH.
THE SEA BREEZE COULD ALSO PUSH THE RELATIVE HUMIDITY TO 50-60 PERCENT
BY 1500-1600.

THE NOCTURNAL INVERSION WILL BEGIN TO DEVELOP QUICKLY AND WINDS WILL BECOME
LIGHT/VARIABLE BETWEEN 1700 AND 1800 TODAY.

FOG POTENTIAL FOR TONIGHT...PATCHY GROUND FOG IN SOUTHEAST
GEORGIA.

.TODAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........37 PERCENT.
20 FT WINDS.........LIGHT AND VARIABLE WINDS...BECOMING EAST 5 TO 6
                    MPH EARLY IN THE MORNING.
MIXING HEIGHT.......500 FT AGL...INCREASING TO A MAXIMUM OF 3900-5100 FT
                    AGL IN THE EARLY AFTERNOON.
TRANSPORT WINDS.....EAST 4 TO 9 MPH...BECOMING SOUTHEAST 6 TO 13 MPH.

TIME (EST)          11 AM  1 PM   3 PM   5 PM
SKY COVER...........CLEAR  CLEAR  MCLEAR MCLEAR
WEATHER COV.........
WEATHER TYPE........NONE   NONE   NONE   NONE
TEMP................63     68     67     61
RH..................46     37     40     56
20 FT WIND..........NE 5   E 8    E 10   E 6
20 FT WIND GUST.....10     10     10

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........100 PERCENT.
20 FT WINDS.........EAST WINDS AROUND 5 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT AND VARIABLE.
MIXING HEIGHT.......5100 FT AGL...DECREASING TO 200-1200 FT AGL.
TRANSPORT WINDS.....NORTHEAST 3 TO 7 MPH.

$$
FORECASTER...ROWLEY
REQUESTED BY...JAN TRIPP
TYPE OF REQUEST...PRESCRIBED
.TAG 20101119.SARIM.01/CHS