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Mesoscale Discussion 168
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   Mesoscale Discussion 0168
   NWS Storm Prediction Center Norman OK
   0220 PM CST Thu Feb 09 2017

   Areas affected...Parts of southern New England and coastal Maine

   Concerning...Heavy snow 

   Valid 092020Z - 100215Z


   SUMMARY...Bands of heavy, convectively enhanced snowfall (and
   occasional blizzard conditions) will continue through 00Z in
   southern New England.  Beyond that, areas of heavier snow will
   develop northward very near coastal Maine, with increasing snowfall
   rates with time.

   DISCUSSION...A persistent band of snow remains located from near
   Boston Metro to near Providence, RI currently.  This band is
   associated with strong mid-level frontogenetic forcing, which
   continues to increase partially in response to a strengthening
   low-level cyclone south of Long Island.  This band has been making
   slow, but steady eastward progress with time, and convective
   elements have locally enhanced snowfall rates to as high as 3+
   inches per hour in spots.  Heavy snow has also developed east of
   this band across eastern Massachusetts.  Northerly surface gusts to
   35 mph have also resulted in occasional blizzard conditions,
   especially across southern New England and Long Island.

   With time, the band is expected to move eastward and clear most of
   eastern Massachusetts by 00Z.  The axis of strongest frontogenesis
   will shift northward, with an attendant increase of snowfall rates
   in or very near land areas of coastal Maine.  High-res models vary
   some on the placement of this band, although rates exceeding 1 inch
   per hour should develop with time across far southern Maine, with
   heavier rates expected into Downeast Maine (northeast of Augusta)
   after 02Z.

   ..Cook.. 02/09/2017


   LAT...LON   45696782 45686765 45396715 45076703 44796717 44496775
               44346828 44146877 43826934 43676961 43327010 43127030
               42847049 42537054 42277039 42157014 41996990 41706983
               41527002 41317037 41227074 41207136 41187171 41217202
               41287219 41677223 42207197 42867144 43717057 44556954
               45306853 45696782 

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