Storm Prediction Center Mesoscale Discussion 261

   Mesoscale Discussion 0261
   NWS Storm Prediction Center Norman OK
   0146 PM CDT Mon Mar 24 2025

   Areas affected...portions of eastern Maine

   Concerning...Heavy snow 

   Valid 241846Z - 242215Z

   SUMMARY...Heavy snow will continue across eastern Maine for the next
   few hours, with 1 inch/hour snowfall rates possible.

   DISCUSSION...Ahead of an approaching stacked cyclone over the Great
   Lakes, low-level warm-air/moisture advection over eastern New
   England is providing increased ascent amid a sub-freezing
   troposphere. Saturation of the dendritic growth zone is supporting
   heavier snowfall, which has been observed over NH into southwest ME
   over the past couple of hours. Current thinking is that the primary
   snowband along the NH/ME border will continue to benefit from
   low-level convergence along an axis of 850-700 mb frontogenesis,
   which characterizes the nose of the stronger WAA within the
   dendritic growth zone. 1 inch/hour snowfall rates will be possible,
   as also shown by the consensus of the more recent high-resolution
   guidance.

   ..Squitieri.. 03/24/2025

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

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

   LAT...LON   43457087 44037096 44657047 45666927 45936826 45636735
               45076687 44606713 44216817 43756930 43457087