MD 0045 CONCERNING HEAVY SNOW FOR PORTIONS OF FAR WESTERN NEW YORK
Mesoscale Discussion 0045
NWS Storm Prediction Center Norman OK
1030 PM CST Mon Jan 20 2025
Areas affected...portions of far western New York
Concerning...Heavy snow
Valid 210430Z - 211030Z
SUMMARY...At least 2-3 inch/hour snowfall rates should continue past
sunrise with an intense lake-effect snow band.
DISCUSSION...MRMS mosaic and KTYX radar imagery show an intense,
steady-state lake-effect snow band persisting across Jefferson and
Lewis Counties in far western NY. This snow-band is benefiting from
an optimal fetch of moisture off of Lake Ontario, where 8+ C/km 0-3
km lapse rates are in place. As such, convective snowfall within
this lake-effect band should persist past sunrise, as shown by the
latest high-resolution guidance consensus. Furthermore, given the
convective nature of the band, and degree of saturation in the
dendritic growth zone, snowfall rates at least in the 2-3 inch/hour
range are expected through the remainder of tonight.
..Squitieri.. 01/21/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BUF...
LAT...LON 43977634 44027567 43947519 43697514 43547540 43587581
43617612 43647630 43977634