Subj : MESO: Mesoscale Discussion 0111
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Jan 26 2023 07:52:39

ACUS11 KWNS 260752
SWOMCD
SPC MCD 260751=20
MEZ000-261345-

Mesoscale Discussion 0111
NWS Storm Prediction Center Norman OK
0151 AM CST Thu Jan 26 2023

Areas affected...northern Maine

Concerning...Heavy snow=20

Valid 260751Z - 261345Z

SUMMARY...Heavy snow -- with rates averaging 1" to 2" per hour -- is
expected over the next several hours across northern portions of
Maine.

DISCUSSION...Intense ascent -- evident in water vapor loop and
hinted at in composite radar reflectivity loop -- is ongoing across
northern New England, ahead of a very strong/negatively tilted
short-wave trough and north of the attendant surface low currently
analyzed over the MA/CT/RI area.

As the surface low shifts north-northeastward along the Maine
coastline overnight, and to New Brunswick by roughly 12z, the zone
of strong low-level warm advection will continue to support
widespread/heavy precipitation across the area.  With time, the warm
advection will allow a transition to above-freezing low-level
temperatures that will encroach on central Maine.  However, the
lower troposphere is expected to remain below freezing through the
early morning across northern Maine, allowing several hours of heavy
snowfall rates, before the low moves north of the area and some dry
slotting reduces precipitation rates.

...Goss.. 01/26/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!_2my5F4b5-KwdcOPKZtky_ZOTyKlElj8CyfvWTS6PRdLoSkCQhoA9R8ZoGZNYB7zGb_WdmsoS=
7iEnqappphYjNCAFcE$  for graphic product...

ATTN...WFO...CAR...GYX...

LAT...LON   45756990 45917050 46687013 47566927 47416805 47036765
            46446799 45756990=20


=3D =3D =3D
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