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Severe Thunderstorm Watch 668
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WW0668 Radar
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   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 668
   NWS STORM PREDICTION CENTER NORMAN OK
   105 PM EDT TUE JUL 8 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN AND PART OF CENTRAL NORTH CAROLINA
          SOUTHEAST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 105 PM UNTIL
   900 PM 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 70
   STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH
   SOUTHEAST OF NEW BERN NORTH CAROLINA TO 20 MILES NORTH NORTHWEST
   OF RICHMOND VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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...SLOW MOVING UPPER LOW AND ASSOCIATED MID LEVEL COLD
   POCKET IS ALREADY SUPPORTING VERY UNSTABLE AIR ACROSS THIS REGION
   TODAY...WHICH WILL BECOME MORE UNSTABLE THROUGH THE AFTERNOON. 
   ALTHOUGH SHEAR IS MODEST...SOME WEAK ORGANIZATION REMAINS POSSIBLE
   WITH CLUSTERS/LINE SEGMENTS EVOLVING THROUGH THE EARLY EVENING. 
   LARGE HAIL AND DAMAGING WIND THREATS WILL LIKEWISE INCREASE TODAY.
   
   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 500. MEAN STORM
   MOTION VECTOR 27015.
   
   
   ...EVANS
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