MESOSCALE DISCUSSION 0648
   NWS STORM PREDICTION CENTER NORMAN OK
   1005 AM CDT TUE MAY 11 2004
   
   AREAS AFFECTED...S TX
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 111505Z - 111700Z
   
   CONDITIONS APPEAR FAVORABLE FOR BOW ECHO STORMS OVER LA_SALLE COUNTY
    TO PERSIST NEXT 3 HOURS OR SO. THIS STORM WILL POSE A THREAT FOR
   DAMAGING WIND AS IT CONTINUES SEWD THROUGH S TX. WW MAY BE NEEDED
   SHORTLY.
   
   BOW ECHO STORM OVER LA_SALLE COUNTY IS MOVING ESEWD AT AROUND 30 KT.
    THE ATMOSPHERE DOWNSTREAM FROM THE STORM IS DESTABILIZING WITH
   MLCAPE FROM 2000 TO 2500 J/KG AND WEAK CAP. MOIST UNSTABLE SELY LOW
   LEVEL INFLOW SHOULD CONTINUE TO SUPPORT A FORWARD PROPAGATING SYSTEM
   THROUGH THE REMAINDER OF S TX THROUGH 19Z WITH THREAT FOR ISOLATED
   DAMAGING WIND AND HAIL.
   
   ..DIAL.. 05/11/2004
   
   
   ATTN...WFO...CRP...EWX...
   
   27879928 28739888 28739739 27909688 27639861