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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 250

NWS STORM PREDICTION CENTER NORMAN OK

430 AM EDT THU APR 28 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EAST CENTRAL GEORGIA

       CENTRAL NORTH CAROLINA

       CENTRAL AND PARTS OF EASTERN SOUTH CAROLINA



EFFECTIVE THIS THURSDAY MORNING FROM 430 AM UNTIL NOON EDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES WEST SOUTHWEST OF

VIDALIA GEORGIA TO 10 MILES NORTHWEST OF ROANOKE RAPIDS NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 248. WATCH NUMBER 248 WILL NOT BE IN EFFECT AFTER

430 AM EDT. CONTINUE...WW 246...WW 247...WW 249...



DISCUSSION...BROKEN PRE-FRONTAL CONVECTIVE BAND WILL CONTINUE TO

MOVE EWD THROUGH THE MORNING AS INDIVIDUAL CELLS MOVE QUICKLY NEWD

ALONG THE LINE.  AN INFLUX OF NEAR 70 F SURFACE DEWPOINTS WILL

RESULT IN SUFFICIENT INSTABILITY TO MAINTAIN THE STORMS THROUGH THE

MORNING...WHILE DEEP-LAYER AND LOW-LEVEL SHEAR WILL REMAIN FAVORABLE

FOR EMBEDDED SUPERCELLS/BOWS CAPABLE OF PRODUCING DAMAGING WINDS AND

A FEW TORNADOES.



AVIATION...TORNADOES AND 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 24035.





...THOMPSON

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