FNUS72 KCAE 201724
FWSCAE

SPOT FORECAST FOR DRILL-SUMTER TORNADO...PEE DEE IMT
NATIONAL WEATHER SERVICE COLUMBIA SC
124 PM EDT WED APR 20 2011

FORECAST IS BASED ON INCIDENT TIME OF 1309 EDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
THIS IS A FORECAST FOR THE SUMTER TORNADO DRILL.

HIGH PRESSURE TO THE WEST AND AN APPROACHING FRONT
WILL CONTINUE TO CAUSE WEST WINDS THIS AFTERNOON
BETWEEN 10 AND 15 MPH. RELATIVE HUMIDITIES ARE EXPECTED
TO BE BETWEEN 40 AND 50 PERCENT THIS AFTERNOON.
CUMULUS CLOUD DEVELOPMENT WILL BE LIMITED DUE
TO DECREASING MOISTURE ADVECTION FROM THE WEST FLOW AND
LIMITED SUNSHINE FROM HIGH CLOUDS. THE CHANCE
FOR THUNDERSTORMS WILL BE LOW FOR THE REST OF
THE AFTERNOON.

.TODAY...
TIME (EDT)          1PM 2PM 3PM 4PM 5PM
SKY (%)..............61  66  65  62  61
WEATHER COV..........                SCH
WEATHER TYPE.........                TSM
TEMP.................79  81  83  86  88
RH...................54  49  46  42  39
20 FT WIND DIR.......W   W   W   SW  SW
20 FT WIND DIR.......250 250 250 240 230
20 FT WIND SPD.......10  13  11  9   8
20 FT WIND GUST......20  25  20  15  15
MIX HGT (KFT)........4.4 5.2 5.1 5.0 4.9
TRANSP WIND DIR......W   W   W   W   W
TRANSP WIND SPD......26  26  26  26  26

$$
FORECASTER...LAMBERTY
REQUESTED BY...CINDY GRACE
TYPE OF REQUEST...SAR
.TAG 20110420.DRILL.01/CAE