MESOSCALE DISCUSSION 0754
   NWS STORM PREDICTION CENTER NORMAN OK
   0846 AM CDT THU MAY 12 2011
   
   AREAS AFFECTED...S-CNTRL THROUGH N-CNTRL TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 121346Z - 121445Z
   
   STORMS MAY CONTINUE TO DEVELOP EWD AND NEWD THROUGH CNTRL AND
   N-CNTRL TX. LARGE HAIL AND DAMAGING WIND WILL BE THE MAIN THREATS. A
   WW MAY BE NEEDED SOON.
   
   EARLY THIS MORNING STORMS CONTINUE TO INCREASE ALONG LEADING EDGE OF
   MCS COLD POOL FROM JUST SW OF STEPHENVILLE SWD THROUGH S-CNTRL TX.
   SOME UNCERTAINTY EXISTS REGARDING THE FUTURE EVOLUTION OF THE
   ACTIVITY SINCE THE BOUNDARY LAYER HAS NOT RECOVERED. HOWEVER...THE
   DOWNSTREAM ATMOSPHERE IS MODERATELY UNSTABLE WITH 2000 J/KG MUCAPE
   AND STORMS MAY EVENTUALLY BECOME SURFACE BASED AS THE SURFACE LAYER
   UNDERGOES SLOW BUT GRADUAL WARMING.
   
   ..DIAL.. 05/12/2011
   
   
   ATTN...WFO...HGX...FWD...EWX...
   
   LAT...LON   30049801 30829802 31609811 32129827 33019712 32589620
               30569620 29289687 30049801