MESOSCALE DISCUSSION 0433
   NWS STORM PREDICTION CENTER NORMAN OK
   0741 PM CDT TUE APR 03 2007
   
   AREAS AFFECTED...SWRN AR...FAR SERN OK...PORTIONS OF NRN/CENTRAL TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 116...
   
   VALID 040041Z - 040245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 116
   CONTINUES.
   
   CLUSTER OF SLOW MOVING SVR THUNDERSTORMS WILL CONTINUE TO AFFECT
   PORTIONS OF CENTRAL/NRN TX /INCLUDING THE DFW METRO AREA/ OVER THE
   NEXT SEVERAL HRS. TSTMS ARE EXPECTED TO BECOME MORE NUMEROUS ALONG
   THE COLD FRONT ACROSS FAR NERN TX/SERN OK AND SWRN AR IN THE NEXT
   FEW HRS AS A COLD FRONT PUSHES INTO THE WEAKLY CAPPED AIRMASS. THE
   00Z FWD SOUNDING SHOWED ALMOST 4000 J/KG OF MLCAPE. DESPITE MARGINAL
   SHEAR...THIS EXTREME INSTABILITY WILL CONTINUE TO FAVOR THE
   POTENTIAL FOR VERY LARGE HAIL AND A ISOLATED TORNADO OR TWO
   ESPECIALLY WHERE DEVIANT STORM MOTIONS EXIST. GIVEN THE OVERALL SLOW
   STORM MOTIONS...HEAVY RAINFALL WITH 1-2 IN/HR RATES IS POSSIBLE.
   
   ..CROSBIE.. 04/04/2007
   
   
   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...EWX...SJT...
   
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