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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 550

NWS STORM PREDICTION CENTER NORMAN OK

235 PM EDT THU AUG 2 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST AND EAST CENTRAL GEORGIA

       SOUTHERN SOUTH CAROLINA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

800 PM EDT.



HAIL TO 1.5 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST

SOUTHWEST OF VIDALIA GEORGIA TO 40 MILES EAST NORTHEAST OF

SAVANNAH GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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...STRONG/SEVERE PULSE STORMS HAVE DEVELOPED FROM SRN GA

INTO SRN SC...WITHIN A VERY UNSTABLE AIR MASS WITH CAPE TO 4000

J/KG.  ACTIVITY IS ALONG THE SRN EDGE OF A SHORT WAVE TROUGH MOVING

SLOWLY SEWD ACROSS THE CAROLINAS AND MAY BE AIDED BY STRONGER

NORTHERLY JET LEVEL WINDS.  GIVEN DRY AIR ALOFT AND STEEP LOW LEVEL

LAPSE RATES...A COLD POOL MAY ORGANIZE AND PROGRESS SWD INTO PARTS

OF SRN SC AND SERN GA THIS AFTERNOON.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 33010.





...WEISS

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