MD 0041 CONCERNING HEAVY SNOW FOR PORTIONS OF FAR WESTERN NEW YORK
Mesoscale Discussion 0041
NWS Storm Prediction Center Norman OK
0439 PM CST Mon Jan 20 2025
Areas affected...portions of far western New York
Concerning...Heavy snow
Valid 202239Z - 210245Z
SUMMARY...Instances of heavy lake-effect snow should continue
through the evening, with 2 inch/hour snowfall rates possible,
especially over Erie County, New York.
DISCUSSION...Deep-layer flow (especially closer to the surface) has
become more aligned with the long axis of Lake Erie over the past
couple of hours given the passing of a weak surface trough. The long
fetch of appreciable low-level moisture off of the lake waters will
support lake effect snow into the evening hours. 6-7 C/km low-level
lapse rates (evident via 22Z mesoanalysis) will support continued
heavier snowfall (as was recently observed at the DKK ASOS), with
snowfall rates potentially approaching 2 inches/hour at times.
..Squitieri.. 01/20/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BUF...
LAT...LON 42667911 42767897 42817890 42907887 42927861 42777847
42617851 42527878 42517889 42577899 42667911
