MESOSCALE DISCUSSION 2127
   NWS STORM PREDICTION CENTER NORMAN OK
   0735 PM CDT SUN SEP 04 2011
   
   AREAS AFFECTED...NERN PA INTO CNTRL/ERN AND UPSTATE NY...AND VT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 835...
   
   VALID 050035Z - 050130Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 835
   CONTINUES.
   
   THREAT OF DMGG WINDS AND LARGE HAIL MAY CONTINUE OVER THE NEXT HOUR
   OR TWO...BUT GENERALLY APPEARS TO BE WANING. PORTIONS OF THE WW
   ACROSS NY MAY BE CANCELLED EARLY.
   
   DIURNAL COOLING AND A GENERALLY RAIN COOLED AIR MASS CONTINUE TO
   CONTRIBUTE TO INCREASING CONVECTIVE INHIBITION...EVIDENT ON AREA 00Z
   SOUNDINGS. THEREFORE...A LESSENING THREAT OF SURFACE-BASED STORMS
   AND ATTENDANT WIND THREAT IS DEVELOPING. NY PORTIONS OF THE WW MAY
   BE CANCELLED EARLY. ACROSS PA...A NARROW CORRIDOR OF WEAK
   INSTABILITY REMAINS IN ADVANCE OF A BROKEN LINE OF
   THUNDERSTORMS...AND MAY BE SUFFICIENT ENOUGH TO SUPPORT STRONG TO
   SEVERE STORMS OVER THE NEXT HOUR OR TWO. FARTHER NORTH ACROSS
   VT...SUFFICIENT INSTABILITY AND STRONGER FLOW THAN AREAS TO THE
   SOUTH WILL INFLUENCE STRONGER CONVECTIVE DEVELOPMENT ACROSS NRN AND
   SRN VT...BUT WILL QUICKLY DIMINISH AS DIURNAL COOLING CONTINUES TO
   STABILIZE THE BOUNDARY LAYER.
   
   ..HURLBUT.. 09/05/2011
   
   
   ATTN...WFO...GYX...BTV...OKX...ALY...PHI...BGM...CTP...
   
   LAT...LON   40757636 40687694 40857728 41027734 41267815 41467807
               41497759 42037756 41977668 42817536 45047258 44987157
               44607150 43887213 43177259 42747258 42777308 42517336
               42467383 41687394 41537461 41287467 41107497 41267525
               41197552 40757636