MESOSCALE DISCUSSION 0597
   NWS STORM PREDICTION CENTER NORMAN OK
   0226 PM CDT THU APR 26 2007
   
   AREAS AFFECTED...ERN OH...WRN PA...NRN WV
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 261926Z - 262030Z
   
   STRONG THUNDERSTORM HAS RECENTLY DEVELOPED WITHIN INCREASINGLY
   BUOYANT AIRMASS ALONG SLOWLY RETREATING WARM FRONT OVER ECNTRL OH IN
   HARRISON COUNTY.  LATEST DIAGNOSTIC DATA SUGGESTS AIRMASS IS NOW
   DESTABILIZING ALONG COOL SIDE OF BOUNDARY ACROSS WRN PA WHERE SHEAR
   PROFILES ARE CERTAINLY SUPPORTIVE OF LOW LEVEL ROTATION. 
   ADDITIONALLY...GIVEN DEEP LAYER SHEAR...IT SEEMS PROBABLE THAT
   ISOLATED SUPERCELLS WITH SOME LARGE HAIL...AND A FEW TORNADOES WILL
   OCCUR ALONG THIS WARM FRONTAL ZONE INTO THE EVENING HOURS.
   
   ..DARROW.. 04/26/2007
   
   
   ATTN...WFO...PBZ...CLE...
   
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