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Mesoscale Discussion 44 | |
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Mesoscale Discussion 0044 NWS Storm Prediction Center Norman OK 1016 PM CST Mon Jan 20 2025 Areas affected...portions of far western New York Concerning...Heavy snow Valid 210416Z - 210815Z SUMMARY...Heavy lake-effect snow should continue into the early morning hours, with 3 inch/hour intermittent snowfall rates likely. DISCUSSION...The lake-effect snow-band has taken a more southwest-to-northeast orientation over the past hour or so, with heavy snow recently reported as far south as the Dunkirk Airport. 04Z mesoanalysis shows increased boundary-layer convergence and moistening along a northern Chautaugua to Erie County line, which will support continued heavy snowfall rates within the main band. Snowfall accumulations over very short time periods via reports suggest that near 3 inch/hour snowfall rates may be occurring with this snow band. With the 04Z mesoanalysis showing 7.5 C/km 0-3 km lapse rates present over water (where a long moisture fetch is in place), 2-3 inch/hour snowfall rates may continue into the early morning hours, as also suggested by latest high-resolution guidance consensus. ..Squitieri.. 01/21/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BUF... LAT...LON 42467965 42677916 42857882 42937844 42827827 42577845 42407890 42337923 42357944 42357954 42467965 |
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