BULLETIN - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 564
   NWS STORM PREDICTION CENTER NORMAN OK
   340 PM EDT SUN AUG 5 2012

   SEVERE THUNDERSTORM WATCH 564 IS IN EFFECT UNTIL 900 PM EDT
   FOR THE FOLLOWING LOCATIONS

   DC 
   .    DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE

   DISTRICT OF COLUMBIA

   DE 
   .    DELAWARE COUNTIES INCLUDED ARE

   KENT                 NEW CASTLE         

   MD 
   .    MARYLAND COUNTIES INCLUDED ARE

   ANNE ARUNDEL         BALTIMORE           CALVERT            
   CAROLINE             CARROLL             CECIL              
   CHARLES              FREDERICK           HARFORD            
   HOWARD               KENT                MONTGOMERY         
   PRINCE GEORGES       QUEEN ANNE'S        ST. MARYS          
   TALBOT              

   MARYLAND INDEPENDENT CITIES INCLUDED ARE

   BALTIMORE CITY      
 -------------------------------------------------
URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 564
   NWS STORM PREDICTION CENTER NORMAN OK
   340 PM EDT SUN AUG 5 2012

   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

          DISTRICT OF COLUMBIA
          NORTHERN DELAWARE
          CENTRAL MARYLAND
          WESTERN NEW JERSEY
          SOUTHEAST PENNSYLVANIA
          NORTHERN VIRGINIA
          COASTAL WATERS

   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 340 PM UNTIL 900
   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 70
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH
   SOUTHWEST OF WASHINGTON DISTRICT OF COLUM TO 20 MILES NORTH OF
   ALLENTOWN PENNSYLVANIA.  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.

   DISCUSSION...CONVECTION FORMING OVER E EDGE OF THE HIGHER TERRAIN
   FROM NRN VA INTO SE PA SHOULD CONTINUE TO SPREAD EWD THROUGH THE
   AFTERNOON/EVENING.  MODERATE INSTABILITY IS PRESENT AHEAD OF THESE
   STORMS...WHERE SURFACE TEMPERATURES HAVE WARMED INTO THE LOW 90S
   WITH DEWPOINTS IN THE LOW 70S.  GIVEN THE COMBINATION OF MLCAPE OF
   1500-2500 J/KG PER THE 18Z IAD SOUNDING...AND ROUGHLY 30 KT
   LOW-MIDLEVEL SWLY FLOW...THE STRONGER STORMS COULD PRODUCE A FEW
   DAMAGING OUTFLOW GUSTS THROUGH THIS EVENING.