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Mesoscale Discussion 1667
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   MESOSCALE DISCUSSION 1667
   NWS STORM PREDICTION CENTER NORMAN OK
   0643 PM CDT TUE SEP 02 2014

   AREAS AFFECTED...NE PENNSYLVANIA...PARTS OF ERN NEW YORK STATE

   CONCERNING...SEVERE THUNDERSTORM WATCH 489...

   VALID 022343Z - 030115Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 489
   CONTINUES.

   SUMMARY...A NEW SEVERE WEATHER WATCH MAY NOT BE REQUIRED...BUT THIS
   WILL LARGELY DEPEND ON THE RESULTS OF COORDINATION/COLLABORATION
   WITH IMPACTED LOCAL WFOS.

   DISCUSSION...AREA OF PRE-FRONTAL CONVECTION NOW SPREADING TOWARD THE
   CATSKILL AND POCONO MOUNTAINS REGION STILL APPEARS SUPPORTED BY
   FORCING FOR ASCENT ASSOCIATED WITH THE SHORT WAVE IMPULSE GRADUALLY
   ACCELERATING NORTHEAST OF THE LOWER GREAT LAKES REGION INTO THE ST.
   LAWRENCE VALLEY.  HOWEVER...WDSS-II CAPPI DATA SUGGEST THAT STORMS
   HAVE WEAKENED CONSIDERABLY DURING THE PAST COUPLE OF HOURS...AND
   NEAR SURFACE INFLOW...IF ANYTHING...SHOULD BECOME PROGRESSIVELY
   WEAKER AS ACTIVITY ADVANCES TOWARD THE HUDSON/CHAMPLAIN VALLEY
   THROUGH 02-04Z.  PEAK SURFACE GUSTS AT OBSERVED SITES HAVE BEEN
   MOSTLY AROUND 35 KTS.  ALTHOUGH THIS MAY STILL BE SUFFICIENT TO
   CONTRIBUTE TO LOCALIZED DAMAGE TO TREES AND POWER LINES AS LONG AS
   IT PERSISTS...GENERAL ANTICIPATED WEAKENING TRENDS SUGGEST THAT THIS
   THREAT SHOULD CONTINUE TO DIMINISH.

   ..KERR.. 09/02/2014


   ATTN...WFO...BTV...ALY...BGM...

   LAT...LON   42737516 43027445 43587341 42657327 41797399 41347568
               42417561 42737516 

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