MESOSCALE DISCUSSION 0876
   NWS STORM PREDICTION CENTER NORMAN OK
   0810 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...SRN OK...NRN TX
   
   CONCERNING...TORNADO WATCH 326...
   
   VALID 230110Z - 230215Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 326 CONTINUES.
   
   WW 326 MAY NEED TO BE EXTENDED IN TIME...OR REPLACED BY A NEW WW
   DURING THE NEXT HR.
   
   AT 01Z...CLUSTERS OF STORMS AND ISOLATED RIGHT AND LEFT MOVING
   SUPERCELLS WERE ONGOING ACROSS PORTIONS OF NRN TX AND SRN OK. THOUGH
   CONVECTIVE INHIBITION WILL STEADILY INCREASE INTO THE
   NIGHT...COMBINATION OF STRENGTHENING SLY LLJ AND RESERVOIR OF
   INSTABILITY COINCIDENT WITH ONGOING STORMS /MUCAPE VALUES AOA 2500 J
   PER KG/ WILL LIKELY AID STORM PERSISTENCE THROUGH THE EVENING AND
   EARLY NIGHT. UPSCALE GROWTH INTO A QLCS REMAINS POSSIBLE OVER
   NRN/NERN TX AND SRN/SERN OK...POSING A CONTINUED THREAT FOR LARGE
   HAIL/DAMAGING WINDS AND PERHAPS A FEW TORNADOES.
   
   ..GARNER.. 05/23/2011
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...SJT...
   
   LAT...LON   35209719 35229472 32499533 31789662 31199855 31469900
               32229953 35209719