Subj : MESO: Mesoscale Discussion 0057
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Wed Jan 29 2025 16:40:23

ACUS11 KWNS 291640
SWOMCD
SPC MCD 291639=20
MEZ000-MAZ000-NHZ000-VTZ000-CTZ000-NYZ000-PAZ000-291845-

Mesoscale Discussion 0057
NWS Storm Prediction Center Norman OK
1039 AM CST Wed Jan 29 2025

Areas affected...portions of extreme northeast Pennsylvania...far
eastern New York...Massachusetts...Vermont...New Hampshire

Concerning...Snow Squall=20

Valid 291639Z - 291845Z

SUMMARY...Occasional snow-squall conditions are possible in stronger
portions of a snow band over the next few hours. A rapid onset of
moderate snow, gusty winds, and reduced visibility may all occur.

DISCUSSION...A low-topped, progressive convective snow band has
recently materialized, with a 10 F surface temperature drop,
moderate snowfall rates, and half-mile visibility reductions noted
on surface observations over the past couple of hours. This band is
being driven by a progressive cold front and rapidly ejecting
mid-level trough, which is also preceded by at least partially
clearing skies. 16Z mesoanalysis shows up to 8 C/km low-level lapse
rates downstream of the snow band, suggesting that snow squall
potential may increase this afternoon in stronger convective cells.
Bouts of at least moderate snowfall rates, as well as a 10 F
temperature drop, 25+ kt gusts, and visibility reduced to a quarter
mile, may occur with this band until it moves offshore.

...Squitieri.. 01/29/2025

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!_v8W7kyyDaOyngYcKKlUIWZHCwx95NsB34NJ50q-z2PhLGm69SiGohoB6bYX_WFtCZJEEd_hW=
GmK1CPjpYNZL-jRVH0$  for graphic product...

ATTN...WFO...GYX...BOX...BTV...ALY...BGM...

LAT...LON   41657666 42767392 44517271 45077227 45297141 45007096
            44297103 43157069 42667073 42357092 42067231 41747391
            41617466 41617538 41657666=20


=3D =3D =3D
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