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WWUS20 KWNS 121436

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NCZ000-VAZ000-CWZ000-122200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 601

NWS STORM PREDICTION CENTER NORMAN OK

1035 AM EDT THU AUG 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF  EASTERN NORTH CAROLINA

       LARGE PART OF SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1035 AM UNTIL

600 PM EDT.



HAIL TO 1 INCH 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 80

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF

RICHMOND VIRGINIA TO 50 MILES SOUTHEAST OF NEW BERN NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...FORWARD PROPAGATING THUNDERSTORM COMPLEX CHESAPEAKE BAY

WILL CONTINUE DEVELOPING S/SE INTO A VERY RICH AND INCREASINGLY

UNSTABLE AIR MASS.  ADDITIONAL THUNDERSTORMS WILL DEVELOP S AND W OF

THIS COMPLEX AS S/WV TROUGH APPROACHES FROM THE NW.  PRIMARY THREAT

WILL BE WIND DAMAGE AS MLCAPES CLIMB TO ABOVE 2500 J/KG WITH VERY

HIGH PWAT.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

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

VECTOR 29025.





...HALES

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