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733 

WWUS20 KWNS 110439

SEL4

SPC WW 110439

SCZ000-110800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 274

NWS STORM PREDICTION CENTER NORMAN OK

1240 AM EDT WED MAY 11 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL SOUTH CAROLINA



EFFECTIVE THIS WEDNESDAY MORNING FROM 1240 AM UNTIL 400 AM 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 60

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH OF

COLUMBIA SOUTH CAROLINA TO 20 MILES SOUTH SOUTHWEST OF ORANGEBURG

SOUTH CAROLINA.  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.



OTHER WATCH INFORMATION...CONTINUE...WW 271...WW 272...WW 273...



DISCUSSION...FAST-MOVING MCS CONTINUES TO TRACK SOUTHWARD INTO

CENTRAL SC.  CONVECTION IS LIKELY TO SLOWLY WEAKEN EARLY THIS

MORNING...BUT THE THREAT OF LOCALLY DAMAGING WINDS AND HAIL WILL

PERSIST FOR THE NEXT FEW HOURS ACROSS THE WATCH AREA.



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 500. MEAN STORM

MOTION VECTOR 34035.





...HART

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