884
ACUS11 KWNS 192135
SWOMCD
SPC MCD 192134
NHZ000-MAZ000-CTZ000-VTZ000-NYZ000-NJZ000-PAZ000-200100-
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
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