MESOSCALE DISCUSSION 0874
   NWS STORM PREDICTION CENTER NORMAN OK
   0752 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...CNTRL/SRN/ERN MO...NRN AR...NERN/E-CNTRL
   OK...PORTIONS OF WRN/CNTRL IL
   
   CONCERNING...TORNADO WATCH 325...
   
   VALID 230052Z - 230145Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 325 CONTINUES.
   
   AT 0030Z...REGIONAL RADAR IMAGERY SHOWED SEVERAL QLCS TYPE
   STRUCTURES BEGINNING TO EVOLVE ACROSS PORTIONS OF CNTRL/SWRN MO AND
   NERN/E-CNTRL OK. ONE QLCS WAS LOCATED OVER NRN PORTIONS OF WW 325
   NEAR JEF MOVING E TOWARD STL...WHILE A SECOND WAS LOCATED IN THE
   SWRN CORNER OF MO PROPAGATING SWD INTO THE INSTABILITY AXIS AND
   ALONG REMNANT OUTFLOW BOUNDARY...AND A THIRD OVER PORTIONS OF
   E-CNTRL OK. BETWEEN THE SWRN MO AND E-CNTRL OK QLCS...A DISCRETE
   RIGHT MOVING SUPERCELL WAS LOCATED 35 NE OF MKO. WITH EFFECTIVE SRH
   VALUES FROM 200-400 M2 S-2 PERSISTING INTO THE NIGHT...EMBEDDED
   SUPERCELLS WITHIN THE QUASI-LINEAR ACTIVITY OR ANY REMAINING
   DISCRETE STORMS WILL CONTINUE TO POSE A TORNADO THREAT.
   OTHERWISE...LARGE HAIL THREAT MAY BE TRANSITIONING TO MORE OF A
   DAMAGING WIND THREAT GIVEN RECENT CONVECTIVE MODE EVOLUTION.
   
   A NEW WW WILL LIKELY BE NEEDED DURING THE NEXT HR OVER PORTIONS OF
   CNTRL/WRN IL...ERN/SRN MO...NRN AR...AND ERN OK.
   
   ..GARNER.. 05/23/2011
   
   
   ATTN...WFO...PAH...ILX...MEG...LSX...LZK...SGF...EAX...TSA...
   ICT...OUN...
   
   LAT...LON   38779410 38809223 39579049 39528914 38498910 35199254
               35219406 35209670 38779410