SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 593
   NWS STORM PREDICTION CENTER NORMAN OK
   825 PM CDT SUN JUL 3 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN HALF OF OKLAHOMA AND THE EASTERN  OKLAHOMA PANHANDLE
          NORTHEAST TEXAS PANHANDLE
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 825 PM UNTIL
   400 AM CDT.
   
   HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTH OF
   LIBERAL KANSAS TO 45 MILES EAST NORTHEAST OF MUSKOGEE OKLAHOMA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   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 588...WW 589...WW 590...WW
   591...
   
   DISCUSSION...CLUSTER OF SEVERE STORMS IN SRN KS WILL DEVELOP SEWD
   INTO N/NE OK THE NEXT FEW HOURS WITH A CONTINUED THREAT FOR DAMAGING
   WINDS AND LARGE HAIL.  A SEPARATE CLUSTER OF SEVERE STORMS IN SW KS
   IS MOVING ALONG THE OUTFLOW BOUNDARY W OF THE SRN KS STORMS.  STRONG
   INSTABILITY IS PRESENT IN ADVANCE OF THIS CONVECTION...AND UPSCALE
   GROWTH INTO A BOW ECHO APPEARS POSSIBLE TOWARD NW OK.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 29040.
   
   
   ...THOMPSON