Mesoscale Discussion 0062
   NWS Storm Prediction Center Norman OK
   0725 AM CST Sun Jan 14 2024

   Areas affected...PA into southern NY

   Concerning...Snow Squall 

   Valid 141325Z - 141700Z

   SUMMARY...Snow squall potential will spread east-northeastward this
   morning across Pennsylvania into parts of southern New York. The
   stronger squalls will be accompanied by brief heavy snow rates,
   gusty winds, and abrupt visibility reductions.

   DISCUSSION...Multiple snow bands are ongoing across parts of
   western/central PA this morning. These bands are ongoing within a
   broadly confluent frontal zone and are likely being aided by a
   mid/upper-level shortwave trough approaching the upper Great Lakes
   region. The downstream environment is expected to become
   increasingly favorable for snow squalls with time, with strong
   cooling aloft (dropping below -20C at 700 mb) supporting steep
   low-level lapse rates and SBCAPE eventually approaching 100 J/kg,
   even with temperatures only warming into the low 30s F. The ongoing
   snow bands have already produced gusts in the 30-35 mph range, and
   strong southwesterly flow in the lowest 3 km AGL may support gusts
   greater than 40 mph, as low-level lapse rates steepen with time.   

   It remains uncertain as to whether a more organized and extensive
   snow band will develop with time, with frontal convergence expected
   to remain relatively modest. However, even if such a band does not
   evolve, multiple smaller-scale bands will be capable of producing
   snow squalls with briefly heavy snow rates, gusty winds, and abrupt
   visibility reductions.

   ..Dean.. 01/14/2024

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

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

   LAT...LON   41677844 42287758 42787492 42497443 41537461 40987535
               40647605 40357696 40117854 40177931 40437941 40977917
               41297889 41677844