Storm Prediction Center Mesoscale Discussion 77

   Mesoscale Discussion 0077
   NWS Storm Prediction Center Norman OK
   0521 PM CST Sat Feb 08 2025

   Areas affected...parts of the Northeast and southern New England

   Concerning...Heavy snow 

   Valid 082321Z - 090315Z

   SUMMARY...Leading corridor of winter storm across the Northeast will
   produce a heavy snow band before transitioning to sleet/freezing
   rain from the southwest. Heavy snowfall rates of 1-2 inches per hour
   are likely.

   DISCUSSION...A fast-moving swath of winter mixed precip will spread
   across the Northeast and southern New England states through the
   rest of this evening. Strengthening low to mid-level ascent will
   yield a band of heavy snow along the leading periphery of this
   precip plume where the thermodynamic profile remains entirely below
   freezing. The initial swath should emanate out of the north-central
   PA/southwest NY vicinity, where heavy snow has been observed, and
   should expand east-southeastward along the NY to PA/NJ border area
   over the next few hours. A longer-lasting deformation zone within
   the cold-conveyor region should develop east from the Lake Erie
   vicinity and move across much of southern NY during the next several
   hours. A highly consistent signal persists across daytime guidance
   with snowfall rates of 1-2 in/hr. The southern portion of the heavy
   snow swath to about the Upper DE and Lower Hudson Valleys should mix
   with/transition to sleet/freezing rain later in the evening.

   ..Grams.. 02/08/2025

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

   ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...BUF...CTP...

   LAT...LON   40677327 41357478 41657603 41777768 42117911 42547929
               43117880 43417525 43287361 42927212 42647131 42087094
               41517107 40927210 40677327