URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 83
   STORM PREDICTION CENTER NORMAN OK
   320 PM CST THU APR 3 2003
   
   THE STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
   
      SOUTHWEST AND CENTRAL OKLAHOMA                           
      NORTHWEST TEXAS                              
   
   EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 320 PM UNTIL 800
   PM 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 ALONG AND 75 STATUTE MILES
   EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF CLINTON OKLAHOMA
   TO 70 MILES SOUTH SOUTHEAST OF WICHITA FALLS TEXAS.
   
   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 QUICKLY DEVELOPING ALONG DRY LINE
   SEGMENT FROM NORTH OF ABI INTO SWRN OK...AHEAD OF WEAK SHORTWAVE
   TROUGH LIFTING NEWD OUT OF WRN TX.  DEEP LAYER SHEAR ON THE ORDER
   OF 40 KT AND MODERATE INSTABILITY WILL BE SUFFICIENT FOR
   SUPERCELLS.  VERY STEEP LAPSE RATES SHOULD INCREASE THE LARGE HAIL
   THREAT...ALONG WITH ISOLATED DAMAGING WINDS AS STORMS DEVELOP NEWD
   TOWARDS THE I-35 CORRIDOR INTO THE EARLY/MID EVENING.
   
   
   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 25025.
   
   
   ...EVANS