The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     District Of Columbia
     Delaware
     Maryland
     New Jersey
     Southeast and Eastern Pennsylvania
     Northern and Eastern Virginia
     Far Eastern West Virginia
     Coastal Waters

   * Effective this Thursday afternoon and evening from 245 PM until
     900 PM EDT.

   * Primary threats include...
     Scattered damaging wind gusts to 65 mph likely
     A tornado or two possible

   SUMMARY...Strong to severe thunderstorms are expected to develop
   this afternoon initially across southeast Pennsylvania into
   Maryland/Virginia Blue Ridge vicinity. A relatively moist/unstable
   environment along with moderately strong southwesterly deep-layer
   winds will support sustained multicells and potentially some
   supercells. Thunderstorm-related wind damage is the most probable
   risk, but some hail and a low tornado risk will exist as well.

   The severe thunderstorm watch area is approximately along and 70
   statute miles east and west of a line from 35 miles northeast of
   Allentown PA to 45 miles east southeast of Charlottesville VA. For a
   complete depiction of the watch see the associated watch outline
   update (WOUS64 KWNS WOU4).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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.