Mesoscale Discussion 0007
   NWS Storm Prediction Center Norman OK
   0537 AM CST Wed Jan 08 2020

   Areas affected...much of  New York...northeast Pennsylvania

   Concerning...Snow Squall 

   Valid 081137Z - 081730Z

   SUMMARY...A few small snow-squalls are expected to persist through
   the morning hours from northeast Pennsylvania across much of central
   and eastern New York.

   DISCUSSION...Extremely cold temperatures aloft continue to
   overspread the region with -40 C at 500 mb. Meanwhile, surface
   dewpoints remain in the mid 20s F, with boundary-layer RH otherwise
   high. With such cold temperatures aloft, lake-induced instability
   has developed with an occasional lightning flash noted over the past
   few hours.

   While surface convergence will not be particularly strong or focused
   beneath the upper vort, gradually veering and increasing low-level
   winds will maintain generally weak convergence, possibly aided by
   any surface lows/waves that develop off of Lake Ontario. Given
   continued cooling aloft, and possible pockets of surface heating
   later today, localized squalls of heavy snow may survive or
   redevelop downstream of Lake Ontario through the morning hours.

   ..Jewell.. 01/08/2020

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

   ATTN...WFO...BTV...ALY...BGM...BUF...CTP...

   LAT...LON   41897442 41597638 41567705 41807748 42197715 42557715
               42917730 43457755 43837748 44357594 44127409 43977330
               43727304 43167293 42667315 42237356 42067389 41897442