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Mesoscale Discussion 154
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   MESOSCALE DISCUSSION 0154
   NWS STORM PREDICTION CENTER NORMAN OK
   0140 AM CST THU FEB 25 2016

   AREAS AFFECTED...SOUTHERN NEW ENGLAND AND EASTERN LONG ISLAND

   CONCERNING...SEVERE THUNDERSTORM WATCH 31...32...

   VALID 250740Z - 250915Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   31...32...CONTINUES.

   SUMMARY...DAMAGING WIND GUSTS ARE LIKELY AHEAD OF SQUALL LINE AS IT
   PROGRESSES ACROSS SOUTHERN NEW ENGLAND AND EASTERN LONG ISLAND.

   DISCUSSION...BROKEN SQUALL LINE IS PROGRESSING EWD AT ROUGHLY 30KT
   ACROSS SRN NEW ENGLAND...EXTENDING SOUTH ACROSS ERN LONG ISLAND. 
   STRONG STORMS EXTEND WELL SOUTH OF LONG ISLAND WITH INDIVIDUAL CELLS
   RACING NNEWD AT SPEEDS APPROACHING 50KT.  WHILE CONVECTION IS LIKELY
   ELEVATED IN NATURE...VERY STRONG FLOW JUST OFF THE SURFACE APPEARS
   TO BE PARTLY RESPONSIBLE FOR DOWNWARD MOMENTUM AND ASSOCIATED
   MEASURED SEVERE WIND GUSTS AT SEVERAL LOCATIONS ALONG/AHEAD OF THE
   SQUALL LINE.  GIVEN THE CURRENT SPEED OF THIS ACTIVITY THE STRONGEST
   PORTION OF THE LINE SHOULD MOVE OFF ALL BUT THE OUTER CAPE REGION OF
   MA BY 0930Z.

   AIR MASS IS RECOVERING RAPIDLY ACROSS SERN NH INTO EXTREME SRN
   MAINE.  THERE IS SOME CONCERN LOCALLY SEVERE WIND GUSTS COULD
   ACCOMPANY THE NRN PORTION OF THE SQUALL LINE BUT PRIMARY THREAT IS
   EXPECTED TO REMAIN ACROSS MA AND POINTS SOUTH.

   ..DARROW.. 02/25/2016


   ATTN...WFO...GYX...BOX...OKX...

   LAT...LON   40707276 43507156 42947044 40517122 40707276 

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Page last modified: February 25, 2016
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