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Mesoscale Discussion 1963
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MD 1963 graphic

   Mesoscale Discussion 1963
   NWS Storm Prediction Center Norman OK
   0528 PM CST Fri Nov 18 2022

   Areas affected...portions of far southwestern New York

   Concerning...Heavy snow 

   Valid 182328Z - 190130Z

   SUMMARY...1-2 inch/hr snowfall rates should continue for at least a
   couple more hours, with dangerous travel conditions persisting.

   DISCUSSION...A long-lived lake-effect snow band continues to promote
   1-2 inch/hr snowfall rates across areas immediately east of Lake
   Erie as deep-layer ascent continues overhead with the passage of a
   surface lee trough. These heavier snowfall rates should continue for
   a couple more hours given the persistence of steep low-level lapse
   rates. In a few more hours, as the aforementioned lapse rates become
   more shallow, a gradual lessening of snowfall rates may follow.
   However, deep-layer flow fields should continue to parallel the long
   axis of Lake Erie, promoting a continued deep fetch of moisture with
   the ongoing snow band. As such, at least light to moderate snowfall
   rates and occasionally gusty conditions should continue into
   tonight, with travel conditions remaining dangerous.

   ..Squitieri.. 11/18/2022

   ...Please see for graphic product...


   LAT...LON   42297964 42577918 42787889 42907845 42957812 42897798
               42787793 42557808 42457846 42267882 42177916 42147950
               42147964 42297964 

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