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Mesoscale Discussion 0054
NWS Storm Prediction Center Norman OK
0501 AM CST Sun Jan 25 2026
Areas affected...Pennsylvania...New Jersey...Northern West Virginia...Northern Virginia...Northern Delaware...New Jersey...Far Southeast New York
Concerning...Heavy snow
Valid 251101Z - 251700Z
SUMMARY...Heavy snowfall, with rates of around 1 inch per hour, is expected to continue to develop from parts of the upper Ohio Valley eastward to the Mid-Atlantic this morning.
DISCUSSION...The latest mosaic radar imagery shows widespread snowfall ongoing from the Ohio Valley eastward into the Mid-Atlantic. This is occurring along a broad zone of strong isentropic ascent, aided by warm advection associated with a 50 to 60 knot low-level speed max over the southern Appalachians. The exit region of this feature will continue to move northward this morning into the upper Ohio Valley and northern Mid-Atlantic, helping to gradually intensify snowfall rates. This will result in areas of heavy snow from Pennsylvania and northern Virginia eastward to New Jersey and far southeastern New York. Snowfall rates of 1 inch per hour will be possible within the more well-defined bands that setup. The heavy snowfall potential from Pennsylvania and New Jersey northward should continue through the mid to late morning. In northern Virginia, Maryland and Delaware, a changeover to freezing rain is expected by late morning.
..Broyles/Mosier.. 01/25/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OKX...PHI...BGM...CTP...LWX...PBZ...RLX...