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000 

WWUS20 KWNS 120455

SEL9

SPC WW 120455

NCZ000-SCZ000-VAZ000-121200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 129

NWS STORM PREDICTION CENTER NORMAN OK

1255 AM EDT THU APR 12 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF CENTRAL AND EASTERN NORTH CAROLINA

       PARTS OF NORTHEASTERN SOUTH CAROLINA

       PARTS OF SOUTHERN VIRGINIA



EFFECTIVE THIS THURSDAY MORNING FROM 1255 AM UNTIL 800 AM 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 65

STATUTE MILES EITHER SIDE OF A LINE FROM 60 MILES NORTHWEST OF

FLORENCE SOUTH CAROLINA TO 40 MILES NORTHEAST OF ROANOKE RAPIDS

NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 128...



DISCUSSION...STORMS WILL INCREASE IN NUMBER AND INTENSITY ACROSS

WATCH AS VERY STRONG WIND PROFILES ROTATE THRU AREA ALONG WITH

INCREASING WARM ADVECTION AND MID LEVEL INSTABILITY.  PRIMARILY

ELEVATED STORMS WITH LARGE HAIL POTENTIAL...HOWEVER STORMS COULD

BECOME NEAR SURFACE BASED WITH TIME INCREASING THREAT OF WIND DAMAGE

AND SUPERCELLS.



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 400. MEAN STORM

MOTION VECTOR 23045.





...HALES

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