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   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 488
   NWS STORM PREDICTION CENTER NORMAN OK
   235 PM EDT THU JUN 17 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          DISTRICT OF COLUMBIA
          DELAWARE
          MARYLAND
          NEW JERSEY
          SOUTHEAST NEW YORK
          EASTERN PENNSYLVANIA
          NORTHERN VIRGINIA
          EASTERN WEST VIRGINIA
          COASTAL WATERS
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL
   900 PM EDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
   EITHER SIDE OF A LINE FROM 15 MILES EAST NORTHEAST OF NEW YORK
   CITY NEW YORK TO 60 MILES NORTHWEST OF RICHMOND VIRGINIA.
   
   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 487...
   
   DISCUSSION...WITH VERY MOIST AND UNSTABLE AIR MASS COUPLED WITH
   20-30 KT OF FLOW...STORMS WILL DEVELOP AND LOCALLY BECOME SEVERE
   THRU THE AFTERNOON.  PRIMARY THREAT WILL BE WIND DAMAGE WITH
   GREATEST CONCERN WITH SHORT LINES AND BOW SEGMENTS THAT ARE ABLE TO
   DEVELOP
   
   AVIATION...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 550. MEAN STORM
   MOTION VECTOR 27030.
   
   
   ...HALES