MESOSCALE DISCUSSION 0715
   NWS STORM PREDICTION CENTER NORMAN OK
   0617 PM CDT TUE MAY 10 2011
   
   AREAS AFFECTED...SRN OH...ERN KY...WV...WRN VA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 268...
   
   VALID 102317Z - 102345Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 268
   CONTINUES.
   
   ... WITH THE EXPIRATION OF WW268 A NEW SEVERE THUNDERSTORM WATCH
   WILL BE ISSUED TO ACCOUNT FOR ONGOING MCS AND POTENTIAL FOR NEW
   DEVELOPMENT...
   
   LARGE EXPANDING MCS HAS EVOLVED WITHIN NWLY FLOW ACROSS SRN OH INTO
   ERN KY/WRN WV/VA.  WITH BUOYANT WARM ADVECTION FEED EXPECTED TO
   PERSIST ACROSS THIS REGION THERE IS LITTLE DOUBT THAT THIS ACTIVITY
   WILL SPREAD SEWD OVER THE NEXT FEW HOURS WITH SOME POTENTIAL FOR
   UPSHEAR DEVELOPMENT NEAR THE OH RIVER.  FOR THIS REASON A NEW WW
   WILL BE ISSUED SOON.
   
   ..DARROW.. 05/10/2011
   
   
   ATTN...WFO...RLX...MRX...JKL...ILN...LMK...
   
   LAT...LON   39578243 38948107 37668111 36878312 38038393 39108390
               39578243