SEL4
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 554
   NWS STORM PREDICTION CENTER NORMAN OK
   340 PM CDT SUN JUL 4 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND SOUTHWEST KANSAS
          NORTHWEST OKLAHOMA
          EASTERN TEXAS PANHANDLE
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 340 PM UNTIL 1000
   PM CDT.
   
   HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 65 STATUTE MILES
   EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF RUSSELL
   KANSAS TO 80 MILES WEST SOUTHWEST OF CLINTON OKLAHOMA.
   
   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 549...WW 550...WW 551...WW
   552...WW 553...
   
   DISCUSSION...RAPID SEVERE THUNDERSTORM DEVELOPMENT EXPECTED VICINITY
   DRY LINE TX PANHANDLE NEWD INTO KS WHERE AIRMASS IS EXTREMELY
   UNSTABLE.  SHEAR SUPPORTIVE OF SUPERCELLS...WHICH WILL ENHANCE
   POTENTIAL FOR LARGE HAIL AND DOWNBURST WINDS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
   MOTION VECTOR 26025.
   
   
   ...HALES