MESOSCALE DISCUSSION 1626
   NWS STORM PREDICTION CENTER NORMAN OK
   0137 PM CDT MON JUL 20 2009
   
   AREAS AFFECTED...S CNTRL TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 201837Z - 201930Z
   
   STRONG TO SEVERE CONVECTION CAPABLE OF DMGG WINDS IS EXPECTED TO
   INCREASE IN COVERAGE AND SPREAD SSEWD. AREA IS BEING MONITORED FOR A
   POSSIBLE WW. 
   
   EARLIER CONVECTION AND ANVIL BLOW OFF HAS SOMEWHAT LIMITED HEATING
   ACROSS MUCH OF CNTRL TX THIS AFTERNOON. HOWEVER ON THE WRN EDGE OF
   MORE SIGNIFICANT CLOUD COVER AND AMIDST STEEPENING LAPSE
   RATES...AMPLE HEATING HAS EFFECTIVELY DESTABILIZED THE
   ATMOSPHERE...ALLOWING STRONG CONVECTION TO DEVELOP AHEAD OF A
   REMNANT VORT MAX AND MCV. STORMS WILL GRADUALLY PROPAGATE SWD INTO A
   MOIST/MODERATELY UNSTABLE AIRMASS...ORGANIZING INTO AN MCS WITH
   TIME.
   
   ..HURLBUT.. 07/20/2009
   
   
   ATTN...WFO...FWD...EWX...SJT...
   
   LAT...LON   30459822 29499856 29079941 29110029 29820112 30510099
               30890076 31149956 31149855 30459822