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Severe Thunderstorm Watch 594
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WW0594 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.
   SEL4
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 594
   NWS STORM PREDICTION CENTER NORMAN OK
   115 PM EDT SUN JUN 22 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          DISTRICT OF COLUMBIA
          MOST OF MARYLAND
          NORTHERN NORTH CAROLINA
          WESTERN AND NORTHERN VIRGINIA
          EASTERN WEST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 115 PM UNTIL 800
   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 60
   STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHWEST OF
   GREENSBORO NORTH CAROLINA TO 30 MILES NORTHEAST OF MARTINSBURG
   WEST VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).
   
   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 593...
   
   DISCUSSION...TSTMS SHOULD CONTINUE TO INCREASE IN COVERAGE AND
   INTENSITY THIS AFTERNOON E OF THE BLUE RIDGE WITHIN MODERATELY
   UNSTABLE AIR MASS WITH SBCAPES OF 1500-2500 J/KG.  SOME
   STRENGTHENING OF VERTICAL SHEAR IS FORECAST WITH KINEMATIC
   ENVIRONMENT BECOMING SUPPORTIVE OF ORGANIZED STORM CLUSTERS AND/OR
   LINE SEGMENTS CAPABLE OF DAMAGING WINDS AND LARGE HAIL.
   
   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 25025.
   
   
   ...MEAD/THOMPSON
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