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Severe Thunderstorm Watch 630
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WW0630 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 630
   NWS STORM PREDICTION CENTER NORMAN OK
   425 PM EDT TUE AUG 21 2007
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTH CENTRAL AND NORTHEAST NORTH CAROLINA
          SOUTHEAST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 425 PM UNTIL
   1100 PM EDT.
   
   HAIL TO 1.5 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 85
   STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF
   RICHMOND VIRGINIA TO 25 MILES SOUTH OF RALEIGH NORTH CAROLINA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 629...
   
   DISCUSSION...ORGANIZED LINE SEGMENTS WILL CONTINUE TO SPREAD EWD
   FROM CENTRAL VA/NW NC INTO SE VA AND NE NC THROUGH LATE EVENING...IN
   ADVANCE OF THE REMNANTS OF TC ERIN.  A VERY DEEP MIXED
   LAYER/INVERTED-V PROFILES ARE PRESENT FROM CENTRAL VA INTO CENTRAL
   NC...WHILE STRONGER INSTABILITY AND RICHER BOUNDARY LAYER MOISTURE
   ARE PRESENT FARTHER TO THE E.  THE NET RESULT WILL BE A FAVORABLE
   ENVIRONMENT FOR MAINTAINING THE STORMS INTO THE LATE EVENING
   HOURS...WITH AN ATTENDANT THREAT FOR DAMAGING WINDS AND ISOLATED
   LARGE HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27035.
   
   
   ...THOMPSON
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