MESOSCALE DISCUSSION 1549
   NWS STORM PREDICTION CENTER NORMAN OK
   0615 PM CDT THU JUL 19 2007
   
   AREAS AFFECTED...NRN OH INTO WRN PA
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 192315Z - 200045Z
   
   WHILE SEVERE THREAT MAY CONTINUE FOR THE NEXT COUPLE OF HOURS ACROSS
   THIS REGION...LIMITED TEMPORAL NATURE OF THREAT ANTICIPATED ATTM
   SUGGESTS THAT WW ISSUANCE IS UNLIKELY.
   
   BAND OF STRONG/LOCALLY-SEVERE STORMS HAS DEVELOPED ACROSS LAKE
   ERIE...AND IS NOW MOVING QUICKLY SEWD ACROSS NRN OH AND APPROACHING
   THE PA/WRN NY LAKESHORE AREA.  THE STORMS ARE OCCURRING INVOF
   PRIMARY COLD FRONT -- IMMEDIATELY AHEAD OF UPPER CIRCULATION CENTER
   WHICH IS NOW CURVING ESEWD ACROSS LK HURON/THE GEORGIAN BAY.
   
   DEEP-LAYER WIND FIELD REMAINS SUPPORTIVE OF ORGANIZED/SEVERE
   STORMS...AND WITH AROUND 500 J/KG MIXED-LAYER CAPE INDICATED ACROSS
   THIS AREA PER LATEST OBJECTIVE ANALYSIS...POTENTIAL FOR
   LOCALLY-DAMAGING WINDS OR MARGINAL HAIL WILL PERSIST WITH THE
   STRONGER STORMS.  HOWEVER...WITH THE LOSS OF DAYTIME HEATING AND
   SOME ASSOCIATED BOUNDARY-LAYER STABILIZATION...THREAT SHOULD REMAIN
   LIMITED IN DURATION.
   
   ..GOSS.. 07/19/2007
   
   
   ATTN...WFO...BUF...CTP...PBZ...RLX...CLE...ILN...IWX...
   
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