

175 

WWUS20 KWNS 281913

SEL6

SPC WW 281913

NCZ000-SCZ000-CWZ000-290000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 256

NWS STORM PREDICTION CENTER NORMAN OK

315 PM EDT THU APR 28 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST NORTH CAROLINA

       NORTHEAST SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 315 PM UNTIL

800 PM EDT.



TORNADOES...HAIL TO 2 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 45 STATUTE

MILES EAST AND WEST OF A LINE FROM 55 MILES SOUTHWEST OF MYRTLE

BEACH SOUTH CAROLINA TO 30 MILES NORTH OF WILMINGTON NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...CONTINUE...WW 252...WW 253...WW

254...WW 255...



DISCUSSION...THUNDERSTORMS CONTINUE TO FORM OVER THE EASTERN

CAROLINAS AS LARGE UPPER TROUGH ROTATES ACROSS REGION.  SUFFICIENT

LOW LEVEL VERTICAL SHEAR WILL PROVIDE SUPPORT FOR SUPERCELLS THROUGH

THE AFTERNOON.  DAMAGING WINDS ARE THE MAIN THREAT...ALTHOUGH

ISOLATED TORNADOES WILL REMAIN POSSIBLE.



AVIATION...TORNADOES AND 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

500. MEAN STORM MOTION VECTOR 24035.





...HART

