MESOSCALE DISCUSSION 1171
   NWS STORM PREDICTION CENTER NORMAN OK
   0348 PM CDT FRI JUN 10 2011
   
   AREAS AFFECTED...PARTS OF CNTRL/SRN IL...INDIANA AND OH
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 457...
   
   VALID 102048Z - 102215Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 457
   CONTINUES.
   
   TRENDS ARE BEING MONITORED FOR THE POSSIBILITY OF A NEW WW ACROSS
   MUCH OF THE REMAINDER OF OHIO WITHIN THE NEXT COUPLE OF HOURS.
   
   A GRADUAL INCREASE IN STORM COVERAGE IS ONGOING ACROSS THE WATCH
   AREA...IN THE PRESENCE OF STEEPENING LOW-LEVEL LAPSE RATES...
   MODERATELY LARGE CAPE...AND 20-30 KT WESTERLY DEEP LAYER MEAN FLOW. 
   STRENGTHENING LOW-LEVEL CONVERGENCE APPEARS TO FOCUSING IN THE
   VICINITY OF A  DEVELOPING SURFACE LOW CENTER NEAR/NORTHWEST OF
   MUNCIE.  THIS APPEARS LIKELY TO SHIFT EASTWARD INTO NORTHWEST OHIO
   THROUGH 22-23Z...AND MAY BE ACCOMPANIED BY SIGNIFICANT NEW
   CONVECTIVE DEVELOPMENT AND INTENSIFICATION.  WITH TIME...UPSCALE
   CONVECTIVE GROWTH PROBABLY WILL BE ACCOMPANIED BY A STRENGTHENING
   SURFACE COLD POOL AND THE RISK FOR POTENTIALLY DAMAGING WIND GUSTS. 
   OTHERWISE...HAIL AND LOCALLY STRONG DOWNBURSTS WILL CONTINUE
   POSSIBLE LATE THIS AFTERNOON WITH THE MORE VIGOROUS STORMS.
   
   ..KERR.. 06/10/2011
   
   
   ATTN...WFO...PBZ...RLX...CLE...ILN...LMK...IWX...IND...PAH...
   ILX...LSX...
   
   LAT...LON   39248854 39688728 40408632 40938614 41318533 41348439
               41058269 40518138 39048233 38858305 38998468 38328689
               38178904 39248854