Storm Prediction Center Mesoscale Discussion 31

   Mesoscale Discussion 0031
   NWS Storm Prediction Center Norman OK
   0914 PM CST Wed Jan 21 2026

   Areas affected...Parts of southwestern NY and northwestern PA

   Concerning...Snow Squall 

   Valid 220314Z - 220545Z

   SUMMARY...A snow squall will continue tracking eastward across parts
   of southwestern New York and northwestern Pennsylvania during the
   next few hours.

   DISCUSSION...A snow squall has recently organized/intensified as it
   moves eastward out of Ontario Canada. As the squall passed over
   KBUF, visibility dropped to 1/8 mile with a 28-kt gust. As ascent in
   the left-exit region of a robust midlevel jet streak continues
   overspreading western NY, the snow squall will continue tracking
   eastward along an associated surface winds shift during the next few
   hours. Around 40-45 kt of west-southwesterly flow in the lowest 1 km
   AGL (sampled by regional VWPs) and modestly steepened low-level
   lapse rates will continue to support strong gusts and visibility
   reductions of 1/4 mile or less in bursts of heavy snow.

   ..Weinman.. 01/22/2026

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

   ATTN...WFO...BGM...BUF...CTP...PBZ...CLE...

   LAT...LON   41528029 42327910 43377777 43447723 43407677 43187641
               42807632 42277675 41607749 41227817 40977886 40927942
               40997995 41198031 41528029