MESOSCALE DISCUSSION 1656
   NWS STORM PREDICTION CENTER NORMAN OK
   0120 PM CDT FRI JUL 24 2009
   
   AREAS AFFECTED...PARTS OF CENTRAL AND ERN PA INTO PORTIONS OF WRN
   AND CENTRAL NY
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 241820Z - 242015Z
   
   ISOLATED/MARGINAL SEVERE POTENTIAL IS FORECAST TO CONTINUE THROUGH
   THE AFTERNOON WITH STRONGER STORMS ACROSS THIS REGION.
   
   SHOWERS AND SCATTERED THUNDERSTORMS CONTINUE TO DEVELOP ACROSS PARTS
   OF NY/PA THIS AFTERNOON...AS DIURNAL BOUNDARY-LAYER HEATING BENEATH
   COOL MID-LEVEL TEMPERATURES ASSOCIATED WITH THE CIRCULATION CENTER
   ALOFT MOVING EWD ACROSS THIS REGION IS YIELDING MODEST
   DESTABILIZATION.  WHILE MODEST FLOW ALOFT/LIMITED DEEP-LAYER SHEAR
   SUGGESTS NO MORE THAN LOCAL MULTICELL ORGANIZATION...THE RELATIVELY
   COOL CONDITIONS ALOFT WILL CONTINUE TO SUPPORT A MARGINAL HAIL
   POTENTIAL WITH STRONGER CELLS.  LOCALLY-GUSTY WINDS WILL ALSO BE
   POSSIBLE THIS AFTERNOON...BUT OVERALL SEVERE POTENTIAL SHOULD REMAIN
   SUFFICIENTLY LIMITED TO PRECLUDE WW ISSUANCE.
   
   ..GOSS.. 07/24/2009
   
   
   ATTN...WFO...ALY...PHI...BGM...BUF...CTP...PBZ...
   
   LAT...LON   43447511 42467509 40657541 39907735 40257845 41307906
               42087893 42557791 43327646 43447511