Storm Prediction Center Mesoscale Discussion 2248

   Mesoscale Discussion 2248
   NWS Storm Prediction Center Norman OK
   1234 PM CST Tue Dec 02 2025

   Areas affected...Southern New York into New England

   Concerning...Heavy snow 

   Valid 021834Z - 022230Z

   SUMMARY...Heavy snowfall rates between 1-2 inches per hour remain
   likely across southern New York into portions of New England this
   afternoon.

   DISCUSSION...Latest radar mosaics show the development of a snow
   band across portions of south/southeastern New York in response to
   strengthening frontogenesis between the 925-850 mb levels across the
   Mid-Atlantic/New England coast. Surface observations and web cams
   under this band are reporting visibility reductions between 1/4 to
   1/2 mile, which given weak winds across the region, are likely being
   driven primarily by moderate to heavy snowfall rates. Broad-scale
   ascent ahead of an approaching upper wave and more focused mesoscale
   ascent within the warm advection branch of an intensifying low-level
   cyclone (augmented by frontogenetical responses) will remain
   favorably phased through the remainder of the afternoon over the
   greater New England region. This will continue to favor widespread
   light/moderate precipitation and the maintenance and/or development
   of heavier precipitation bands. Consequently, snowfall rates between
   1-2 inches/hour will remain likely for areas north of the surface
   freezing line. Nearly isothermal temperature profiles from the
   surface to around 850 mb suggests that areas near the surface
   freezing line may continue to see rapid fluctuations in
   precipitation type between snow, sleet, and potentially freezing
   rain.

   ..Moore.. 12/02/2025

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

   ATTN...WFO...GYX...BOX...BTV...OKX...ALY...PHI...BGM...

   LAT...LON   42227105 41537270 41247350 41107407 41167459 41297490
               41587521 41947516 42257497 42457469 43647197 43657149
               43567127 43127069 42887051 42647051 42457066 42227105