MD 0039 CONCERNING HEAVY SNOW FOR PORTIONS OF THE MID-ATLANTIC AND NORTHEAST
Mesoscale Discussion 0039
NWS Storm Prediction Center Norman OK
0334 PM CST Sun Jan 19 2025
Areas affected...Portions of the Mid-Atlantic and Northeast
Concerning...Heavy snow
Valid 192134Z - 200100Z
SUMMARY...Heavy snowfall will continue to shift northeastward this
evening across portions of the Mid-Atlantic and Northeast with rates
of >=1" per hour possible.
DISCUSSION...The latest water vapor imagery indicates that the
mid/upper-level speed max is exiting the coast. As a result, the
surface low is deepening off of Delmarva and is forecast to continue
strengthening offshore and move quickly to the northeast. Low-level
frontogenesis will continue to support upward vertical motion and
precipitation banding. Precipitation type is more uncertain near
the coast where strong low-level warm air advection will act to
offset cooling by evaporation and melting over the next few hours.
Thus, the corridor with the highest confidence of 1"+ snowfall rates
over the next few hours has been highlighted.
..Jirak/Mosier.. 01/19/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...OKX...ALY...PHI...BGM...
LAT...LON 41857286 41487335 41127372 40807419 40527458 40357527
40617574 41167540 41777467 42177422 42537378 42897315
43077272 43187218 42867184 42477217 42307238 41857286
