SEL9
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 159
   NWS STORM PREDICTION CENTER NORMAN OK
   720 PM EDT FRI MAY 7 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EASTERN VIRGINIA AND THE LOWER EASTERN SHORE
          COASTAL WATERS
   
   EFFECTIVE THIS FRIDAY EVENING FROM 720 PM UNTIL 1100 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 ALONG AND 25 STATUTE MILES
   NORTH AND SOUTH OF A LINE FROM 130 MILES WEST OF WALLOPS VIRGINIA
   TO 25 MILES SOUTH SOUTHEAST OF WALLOPS 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 157...WW 158...
   
   DISCUSSION...SRN PART OF NRN VA FORWARD-PROPAGATING MCS HAS TAKEN
   SOMEWHAT OF A RIGHT TURN IN THE PAST HOUR OR SO IN RESPONSE TO STORM
   MERGERS AND DISTRIBUTION OF SURFACE-BASED INSTABILITY. THREAT FOR
   HIGH WIND AND PERHAPS HAIL EXPECTED TO AFFECT THE VA NRN NECK AND
   PERHAPS THE LWR ERN SHORE LATER THIS EVENING.  FARTHER
   W...BACK-BUILDING STORMS ON TRAILING PART OF MCS OUTFLOW BNDRY MAY
   YIELD HAIL GIVEN ML CAPE AROUND 2000 J/KG.
   
   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 31035.
   
   
   ...CORFIDI