MESOSCALE DISCUSSION 1772
   NWS STORM PREDICTION CENTER NORMAN OK
   0243 PM CDT THU JUL 28 2011
   
   AREAS AFFECTED...NRN/ERN OH...WRN PA...NRN WV
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 281943Z - 282045Z
   
   STORMS ARE BEGINNING TO DEVELOP AND INTENSIFY IN NWRN OH AS THE CAP
   HAS WEAKENED THROUGH SURFACE HEATING.  A WW WILL LIKELY BE ISSUED
   SOON.
   
   MODERATE INSTABILITY HAS DEVELOPED OVER THE REGION /MLCAPE VALUES
   AOA 1500 J/KG/ IN A MOIST ENVIRONMENT CHARACTERIZED BY SURFACE
   DEWPOINTS IN THE LOWER 70S.  THOUGH THIS AREA IS ON THE SRN FRINGE
   OF STRONGER FLOW...THE CLEVELAND VWP INDICATES DEEP-LAYER SHEAR
   AROUND 35 KTS...WHICH WILL BE SUFFICIENT FOR ORGANIZED STORMS WITH A
   THREAT OF LARGE HAIL AND DAMAGING WINDS.
   
   ..JIRAK.. 07/28/2011
   
   
   ATTN...WFO...PBZ...RLX...CLE...ILN...DTX...IWX...
   
   LAT...LON   41168419 41558397 41748364 41818326 41728261 41638169
               41718095 41668069 41278010 40927960 40617950 40427955
               40247952 39997952 39747958 39597964 39437973 39297992
               39288019 39278072 39408126 39718188 40128256 40468316
               41168419