MESOSCALE DISCUSSION 1716
   NWS STORM PREDICTION CENTER NORMAN OK
   0405 PM CDT TUE JUL 08 2003
   
   AREAS AFFECTED...ERN OH...WRN PA...CENTRAL-NRN WV
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 684...
   
   VALID 082105Z - 082300Z
   
   PARAMETERS REMAIN FAVORABLE FOR SEVERE STORMS PRODUCING HAIL AND
   DAMAGING WIND GUSTS ACROSS ERN OH/WRN PA AND CENTRAL-NRN WV...AS
   THUNDERSTORMS MOVE EWD INTO THIS REGION FROM THE WEST DURING THE
   NEXT SEVERAL HOURS.
   
   VIS IMAGERY SHOWS MAINLY CLEAR SKIES OVER WW 684 TO THE EAST OF THE
   STORMS OVER CENTRAL OH/SWRN WV ALLOWING FOR ADDITIONAL SURFACE
   HEATING/AIR MASS DESTABILIZATION. MLCAPE VALUES RANGE FROM 2000-3000
   J/KG. DEEP LAYER SHEAR IS STRONGEST ACROSS THE CENTRAL-NRN PORTIONS
   OF WW 684 TO SUPPORT SUPERCELLS. DEEP LAYER SHEAR VALUES ARE
   SOMEWHAT WEAKER ACROSS SRN WW...BUT STRONGER INSTABILITY WILL
   SUPPORT MULTICELL STORMS WITH HAIL AND SOME WIND DAMAGE.
   
   ..PETERS.. 07/08/2003
   
   
   ATTN...WFO...RNK...PBZ...RLX...CLE...ILN...
   
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