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Tornado Watch 307
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WW0307 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 307
   NWS STORM PREDICTION CENTER NORMAN OK
   210 PM EDT SUN MAY 11 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTH CAROLINA
          NORTHERN SOUTH CAROLINA
          SOUTHERN VIRGINIA
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 210 PM UNTIL 800
   PM EDT.
   
   TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
   MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHEAST OF
   SOUTH HILL VIRGINIA TO 75 MILES SOUTH SOUTHEAST OF CHARLOTTE
   NORTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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 306...
   
   DISCUSSION...STRONGLY FORCED PRE-FRONTAL SQUALL LINE HAS PASSED THE
   CREST OF THE APPALACHIANS AND WAS RECONSOLIDATING ACROSS THE VA/NC
   FOOTHILLS ATTM. AIR MASS AHEAD OF THE BROKEN CONVECTIVE LINE WAS
   ONLY WEAKLY UNSTABLE BASED ON OBJECTIVE DATA. HOWEVER...BINOVC AND
   MOISTENING ON LOW LEVEL ESELY FLOW WILL CONTRIBUTE TO CONTINUING
   DESTABILIZATION AS THE INTENSE FORCING WITH THE UPPER TROUGH AND
   100KT 500MB WIND MAX SPREAD EAST. IN ADDITION TO RAPID STORM MOTION
   AND WIND DAMAGE THREAT...BRIEF TORNADOES APPEAR POSSIBLE AS STRONG
   SECONDARY CYCLOGENESIS COMMENCES ALONG THE PIEDMONT FRONT...AND INTO
   SERN VA NEXT FEW HOURS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   400. MEAN STORM MOTION VECTOR 24035.
   
   
   ...CARBIN
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