MESOSCALE DISCUSSION 0870
   NWS STORM PREDICTION CENTER NORMAN OK
   0656 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...PORTIONS OF SWRN AND W-CNTRL TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 329...
   
   VALID 222356Z - 230100Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 329
   CONTINUES.
   
   AT 2345Z...ISOLATED TO SCATTERED THUNDERSTORMS...SOME SPLITTING
   SUPERCELLS...CONTINUE TO FORM AND MOVE E OFF OF THE DRYLINE OVER
   PORTIONS OF SWRN AND W-CNTRL TX. AXIS OF VERY UNSTABLE AIR RESIDES
   AHEAD OF THIS ACTIVITY...WITH MLCAPE VALUES UPWARDS OF 3500 J/KG
   BASED ON OBJECTIVE ANALYSIS GUIDANCE. IN ADDITION...AMPLE DEEP LAYER
   SHEAR EXISTS ACROSS THE AREA TO SUPPORT A CONTINUED THREAT FOR LARGE
   HAIL AND DAMAGING WIND GUSTS DURING THE NEXT FEW HRS. RUC FORECAST
   SOUNDINGS ALSO INDICATE FLOW OVER THE LOWEST 1 KM AGL REMAINS BACKED
   AND STRENGTHENS WITH HEIGHT TOWARD EVENING...WHICH COULD SUPPORT A
   SLIGHT INCREASE IN TORNADO POTENTIAL. HOWEVER...COOLING BOUNDARY
   LAYER WILL LEAD TO STRENGTHENING INVERSION WITH TIME...AND POSSIBLY
   HINDER STORM PERSISTENCE AS THE 03Z WATCH EXPIRATION APPROACHES.
   
   ..GARNER.. 05/22/2011
   
   
   ATTN...WFO...FWD...EWX...SJT...LUB...MAF...
   
   LAT...LON   32080278 32100170 32520168 32510067 32970065 32969998
               33399997 33399896 31519898 31449910 30949910 30939947
               30709949 30690096 30280095 30290174 29790176 29790213
               29870232 29750237 29780250 29730266 29230290 28970313
               28980329 29240378 30400381 30660346 30770357 31370302
               31270277 32080278