Mesoscale Discussion 0022
   NWS Storm Prediction Center Norman OK
   1147 AM CST Sat Jan 16 2021

   Areas affected...portions of northern/western Maine

   Concerning...Heavy snow 

   Valid 161747Z - 162345Z

   SUMMARY...Heavy snow will continue to develop northeast across the
   discussion area through this afternoon.  Snowfall rates of around
   one inch/hour will be possible.

   DISCUSSION...Strong low-level southeasterly flow and resultant
   warm/moist advection continue to support a large area of
   precipitation north/east of a surface low over eastern MA at 17z.
   Forcing for ascent associated with the warm advection will continue
   to shift northeast through this afternoon, supporting a mix of
   precipitation types across northern New England.

   Across the discussion area, the higher elevations will generally
   support snow as the dominant precipitation type, although periods of
   mixed precipitation will be possible.  Forecast soundings from the
   16z RAP and 12z NAM guidance show below freezing thermal profiles
   and saturation/lift developing within the dendritic growth zone this
   afternoon, and several hours of 1 to locally 2 inch/hour snowfall
   rates will be possible.  This trend is supported by recent guidance
   from the HRRR and HREF ensemble.

   ..Bunting.. 01/16/2021

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...CAR...GYX...

   LAT...LON   45277083 45787035 46187020 46467002 46536932 46026907
               45486947 45007024 44667073 44707091 44737097 44847099
               44987101 45097100 45257097 45277083