468
ACUS11 KWNS 200323
SWOMCD
SPC MCD 200323
MEZ000-NHZ000-200930-
MESOSCALE DISCUSSION 0040
NWS STORM PREDICTION CENTER NORMAN OK
0923 PM CST SUN JAN 19 2025
AREAS AFFECTED...COASTAL MAINE
CONCERNING...HEAVY SNOW
VALID 200323Z - 200930Z
SUMMARY...HEAVY SNOWFALL WITH RATES AT OR EXCEEDING 1"/HOUR ARE
EXPECTED ACROSS COASTAL MAINE THROUGH 09Z AS A SURFACE CYCLONE
TRACKS NORTHEASTWARD OFF THE COAST OF NEW ENGLAND.
DISCUSSION...AS A RAPIDLY DEEPENING SURFACE LOW TRACKS NORTHEASTWARD
OFF THE COAST OF NEW ENGLAND, STRONG ISENTROPIC ASCENT AND LIFT IN
THE DENDRITIC GROWTH ZONE WILL RESULT IN HEAVY SNOWFALL ACROSS
PORTIONS OF COASTAL MAINE. SHORT-TERM GUIDANCE FROM THE 00Z HREF,
ALONG WITH SURFACE PRESSURE FALLS IN RECENT OBSERVATIONS, HAVE
INCREASED CONFIDENCE THAT SOME AREAS ON THE COAST COULD MEET OR
EXCEED 1"/HOUR SNOWFALL RATES. THE GREATEST CHANCE FOR HEAVY
SNOWFALL RATES WILL BE NORTH AND EAST OF ROCKLAND, AND THE
COMBINATION OF STRONG WINDS AND HEAVY SNOWFALL RATES WILL RESULT IN
LOW VISIBILITY CONDITIONS (AT OR BELOW 0.5 MI). THESE CONDITIONS ARE
EXPECTED TO SUBSIDE IN SOUTHERN MAINE STARTING AROUND 06Z, AND
EXITING NORTHEAST MAINE BY 08-09Z.
..HALBERT.. 01/20/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...CAR...GYX...
LAT...LON 44217093 44517034 44936946 45416838 45336758 45086701
44776675 44396714 44026793 43726904 43606987 43147044
43007066 43197106 43487131 44027122 44217093
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