MESOSCALE DISCUSSION 1588
   NWS STORM PREDICTION CENTER NORMAN OK
   0642 PM CDT THU JUL 16 2009
   
   AREAS AFFECTED...ERN VT...WRN NH/MA...CT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 587...
   
   VALID 162342Z - 170015Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 587
   CONTINUES.
   
   AN INCREASINGLY LOCALIZED/MARGINAL SEVERE THREAT SHOULD PERSIST
   ALONG THE ERN PERIPHERY OF WW 587 AND ADJACENT AREAS
   DOWNSTREAM...FOR A FEW HOURS BEYOND THE SCHEDULED WW EXPIRATION OF
   00Z. THE GREATEST NEAR-TERM THREAT SHOULD BE ACROSS A SMALL PORTION
   OF SERN NY/WRN MA INTO NRN CT AND A LOCAL WFO EXTENSION IN TIME MAY
   BE NECESSARY. FARTHER E...OVERALL AREAL EXTENT OF THE SEVERE THREAT
   SHOULD BE LIMITED IN TIME/DURATION SUCH THAT A NEW WW FOR WFO/S
   ADJACENT TO WW 587 MAY NOT BE NECESSARY.
   
   ..GRAMS.. 07/16/2009
   
   
   ATTN...WFO...GYX...BOX...BTV...OKX...ALY...
   
   LAT...LON   44127242 44267190 44097165 43447187 42447197 41797187
               41517206 41327292 41277356 41487391 41747418 42027397
               42387325 43407276 44077268 44127242