Storm Prediction Center Mesoscale Discussion 2250

   Mesoscale Discussion 2250
   NWS Storm Prediction Center Norman OK
   0850 AM CST Thu Dec 05 2024

   Areas affected...parts of the Northeast

   Concerning...Snow Squall 

   Valid 051450Z - 051715Z

   SUMMARY...Multiple clusters and loosely banded snow squalls may
   persist east into early afternoon, mainly across the southern half
   of New York into northern parts of Pennsylvania and New Jersey.

   DISCUSSION...Near a low-level cyclone centered just north of the
   Binghamton area, scattered bursts of heavy snow are ongoing across
   parts of southern NY into northeast PA, where surface temperatures
   have fallen below freezing along the leading edge of stronger
   westerly winds. Upstream, a lake-induced hybrid squall is ongoing
   across western NY into northwest PA where more widespread
   quarter-mile visibilities have been observed. Per 12Z CAM guidance,
   both areas should move east into midday. The western area will be
   replaced by a lake-effect snow band this afternoon, connected from
   the southern portion of Lake Huron to the eastern part of Lake Erie
   within a west-northwesterly flow regime. Surface temperatures will
   remain marginal for snow-squall conditions along the
   southern/eastern portion of the region (near the I-95 corridor).

   ..Grams.. 12/05/2024

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

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

   LAT...LON   42997377 41897358 41397393 41027426 40917449 40917488
               41487585 41557761 41527865 41957923 42677830 43047747
               43267624 43277469 42997377