SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 116
   NWS STORM PREDICTION CENTER NORMAN OK
   550 PM CST THU MAR 31 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHEAST LOUISIANA
          SOUTHERN MISSISSIPPI
   
   EFFECTIVE THIS THURSDAY AFTERNOON FROM 550 PM UNTIL MIDNIGHT CST.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTHWEST OF
   NATCHEZ MISSISSIPPI TO 55 MILES NORTHEAST OF GULFPORT MISSISSIPPI.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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 114. WATCH NUMBER 114 WILL NOT BE
   IN EFFECT AFTER 550 PM CST. CONTINUE...WW 115...
   
   DISCUSSION...SEVERE STORMS HAVE DEVELOPED ALONG THE E-W OUTFLOW
   BOUNDARY ACROSS SRN LA/MS.  MODERATE INSTABILITY AND DEEP LAYER
   SHEAR IS PRESENT INVOF THIS BOUNDARY...WHICH SHOULD LIFT SLOWLY NWD
   THROUGH THE EVENING.  THE ENVIRONMENT APPEARS SUPPORTIVE OF A FEW
   SUPERCELLS CAPABLE OF PRODUCING LARGE HAIL AND ISOLATED DAMAGING
   GUSTS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 24020.
   
   
   ...THOMPSON