SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 63
   NWS STORM PREDICTION CENTER NORMAN OK
   250 PM CDT SAT APR 10 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTH CENTRAL AND SOUTHEAST TEXAS
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 250 PM UNTIL
   800 PM CDT.
   
   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 85 STATUTE MILES
   EITHER SIDE OF A LINE FROM 55 MILES WEST OF COTULLA TEXAS TO 80
   MILES NORTH NORTHEAST OF HOUSTON 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.
   
   OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
   SEVERE THUNDERSTORM WATCH NUMBER 61. WATCH NUMBER 61 WILL NOT BE
   IN EFFECT AFTER 250 PM CDT. CONTINUE...WW 62...
   
   DISCUSSION...STRONG/SEVERE THUNDERSTORMS CONTINUE TO DEVELOP
   ALONG/BEHIND SWD SURGING COLD FRONT. WARM SECTOR AIRMASS HAS BECOME
   VERY UNSTABLE WITH MUCAPES ABOVE 3000 J/KG.  THIS WILL CONTINUE TO
   SUPPORT SEVERE STORM DEVELOPMENT ACROSS WATCH AREA AS FRONT MOVES
   INTO S TX TONIGHT.  PRIMARY THREAT WILL BE LARGE HAIL...WITH
   INCREASE WIND DAMAGE POTENTIAL AS STORMS EVOLVE INTO LINE SEGMENTS.
   
   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 550. MEAN STORM
   MOTION VECTOR 26030.
   
   
   ...HALES