MESOSCALE DISCUSSION 1967
   NWS STORM PREDICTION CENTER NORMAN OK
   0238 PM CDT TUE AUG 25 2009
   
   AREAS AFFECTED...PARTS OF SERN TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 251938Z - 252115Z
   
   THE THREAT FOR ISOLATED SEVERE STORMS CAPABLE OF MAINLY DAMAGING
   WIND GUSTS IS EXPECTED TO INCREASE ACROSS DISCUSSION AREA THIS
   AFTERNOON.  A WW IS NOT ANTICIPATED.
   
   19Z MESOANALYSIS INDICATED THE PRESENCE OF WEAK BAROCLINIC/
   CONVERGENCE ZONE EXTENDING ALONG A LINE FROM E OF CRS-UTS-HOU.  AIR
   MASS INVOF THIS BOUNDARY HAS WARMED INTO THE 90S...AND WHEN COUPLED
   WITH DEWPOINTS IN THE 60S TO LOWER 70S...ENVIRONMENT IS MODERATELY
   UNSTABLE WITH MLCAPE OF 2000-2500 J/KG.  WHILE SEA BREEZE TSTMS HAVE
   BEEN IN PROGRESS FOR THE PAST COUPLE OF HOURS...ADDITIONAL TSTMS ARE
   BEGINNING TO DEVELOP INLAND OVER WALKER COUNTY AS OF 1925Z. 
   CONTINUED BOUNDARY LAYER HEATING/DESTABILIZATION IN CONJUNCTION WITH
   APPROACH OF MIDLEVEL VORTICITY MAXIMUM FROM THE LOWER MS VALLEY
   SHOULD SUPPORT THE DEVELOPMENT OF ADDITIONAL STORMS ALONG
   ABOVE-MENTIONED SURFACE BOUNDARY.
   
   BASED ON AREA PROFILERS AND VWPS...STORMS SHOULD MOVE/DEVELOP
   WWD/SWWD INTO A HOTTER BUT DRIER AIR MASS W OF SURFACE BOUNDARY. 
   THE COMBINATION OF STEEP LOW-LEVEL LAPSE RATES AND DCAPE OF AROUND
   1500 J/KG INDICATE THE THREAT FOR LOCALLY STRONG WIND GUSTS WITH THE
   MOST INTENSE STORMS.
   
   ..MEAD.. 08/25/2009
   
   
   ATTN...WFO...HGX...FWD...EWX...
   
   LAT...LON   29159611 29299660 29939715 30519720 31129703 31439662
               31439614 31179568 30559527 29579547 29259569 29159611