SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 77
   NWS STORM PREDICTION CENTER NORMAN OK
   535 PM CST THU MAR 24 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND EASTERN OKLAHOMA
          CENTRAL NORTH TEXAS
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 535 PM
   UNTIL 100 AM CST.
   
   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 35 MILES EAST NORTHEAST
   OF BARTLESVILLE OKLAHOMA TO 65 MILES SOUTH OF DURANT OKLAHOMA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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...THUNDERSTORMS ARE EXPECTED TO INCREASE IN THE NEXT
   COUPLE OF HOURS AHEAD OF SEWD-MOVING COLD FRONT / PRE-FRONTAL
   TROUGH.  THOUGH INSTABILITY SHOULD REMAIN LIMITED GIVEN MODEST
   BOUNDARY-LAYER MOISTURE...FAVORABLE DEEP-LAYER SHOULD SUPPORT A FEW
   STRONG / SEVERE STORMS.  MAIN SEVERE THREAT SHOULD BE
   HAIL...ALTHOUGH A LOCALLY STRONG / DAMAGING GUST WILL ALSO BE
   POSSIBLE -- PARTICULARLY EARLY THIS EVENING BEFORE STORMS BECOME
   INCREASINGLY ELEVATED.
   
   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 450. MEAN STORM
   MOTION VECTOR 26035.
   
   
   ...CORFIDI / GOSS