WATCHES: Severe Thunderstorm Watch Number 914

WWUS20 KWNS 091458
SEL4
SPC WW 091458
FLZ000-GAZ000-SCZ000-CWZ000-092200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 914
NWS STORM PREDICTION CENTER NORMAN OK
1100 AM EDT THU OCT 9 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

NORTHEAST FLORIDA
SOUTHEAST GEORGIA
SOUTHERN SOUTH CAROLINA
COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1100 AM UNTIL
600 PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHEAST OF
SAVANNAH GEORGIA TO 30 MILES SOUTH SOUTHWEST OF GAINESVILLE
FLORIDA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...ONGOING STRONG/SEVERE STORMS ASSOCIATED WITH THE COLD
CORE LOW OVER SW GA WILL LIKELY PERSIST THROUGH THE AFTERNOON WHILE
SPREADING NEWD/EWD. GIVEN RELATIVELY COOL MID LEVEL
TEMPERATURES...SURFACE HEATING E OF THE ONGOING STORMS...AND
BOUNDARY LAYER DEWPOINTS NEAR 70 F...INSTABILITY SHOULD REMAIN
SUFFICIENT FOR STORMS WITH LARGE HAIL. DEEP LAYER VERTICAL SHEAR
WILL BE SUFFICIENT FOR A FEW ORGANIZED STORMS WITH SUPERCELL AND/OR
BOW CHARACTERISTICS...THOUGH LOW-LEVEL SHEAR WILL BE RELATIVELY
WEAK. DAMAGING WINDS WILL BE POSSIBLE WITH THE STRONGEST
STORMS...AS WELL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24025.

...THOMPSON

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.