212
ACUS11 KWNS 191800
SWOMCD
SPC MCD 191800
PAZ000-DEZ000-MDZ000-WVZ000-VAZ000-192230-
MESOSCALE DISCUSSION 0038
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CST SUN JAN 19 2025
AREAS AFFECTED...PORTIONS OF MID-ATLANTIC STATES
CONCERNING...HEAVY SNOW
VALID 191800Z - 192230Z
SUMMARY...SNOWFALL WILL CONTINUE TO INCREASE FROM SOUTHWEST TO
NORTHEAST ACROSS PORTIONS OF WEST VIRGINIA, MARYLAND, AND
PENNSYLVANIA THIS AFTERNOON WITH RATES EXCEEDING 1" PER HOUR.
DISCUSSION...AN UPPER-LEVEL TROUGH AND ASSOCIATED SPEED MAX ROTATING
AROUND A LOW NEAR HUDSON BAY ARE MOVING TOWARD THE EAST COAST THIS
AFTERNOON. IN RESPONSE AT THE SURFACE, A LOW OVER NORTH CAROLINA IS
FORECAST TO DEEPEN AND SHIFT NORTHEASTWARD THROUGH THE AFTERNOON.
TO THE NORTH TO NORTHWEST OF THE SURFACE LOW, LOW-LEVEL
FRONTOGENESIS WILL PROMOTE UPWARD VERTICAL MOTION AND PRECIPITATION
BANDING. GIVEN THESE FAVORABLE FACTORS AND COLD VERTICAL PROFILES,
SNOWFALL RATES OF >=1" PER HOUR ARE LIKELY THIS AFTERNOON WITH
HIGHER RATES POSSIBLE IN BANDED STRUCTURES.
..JIRAK/MOSIER.. 01/19/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...PHI...CTP...LWX...RNK...PBZ...RLX...
LAT...LON 39687582 39517657 39347767 39067877 38717917 38377961
38078019 38018068 38168091 38788077 39448031 40117977
40437925 40867841 40947721 40887643 40637544 40257509
39927529 39687582
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page