Subj : MESO: Mesoscale Discussion 0066
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Jan 16 2023 15:50:25

ACUS11 KWNS 161550
SWOMCD
SPC MCD 161549=20
MEZ000-162045-

Mesoscale Discussion 0066
NWS Storm Prediction Center Norman OK
0949 AM CST Mon Jan 16 2023

Areas affected...Parts of Downeast into northern Maine

Concerning...Winter mixed precipitation=20

Valid 161549Z - 162045Z

SUMMARY...A mixture of sleet and freezing rain is expected through
much of today across parts of eastern/northern Maine.

DISCUSSION...A slow moving upper-level low should continue northeast
today. A broad area of precipitation is noted in parts of
Downeast/mid-coast Maine. This area of precipitation is moving
northwestward and will eventually impact parts of the Highlands and
northern Maine. Sleet and freezing rain has already been reported.
With favorable surface trajectories from the northeast/north, cold
air at the surface should remain for most areas through the day. The
observed 12Z CAR sounding showed a warm nose at near 800 mb and
model forecast soundings show this profile structure generally
persisting. A mixture of primarily sleet and freezing rain is
expected. Snow is also possible and will be more favored with
northern extent. Temperatures in Downeast Maine are nearing freezing
and other areas near the coast may do so as well. A transition to
rain is possible for these southernmost areas later today.
Precipitation should eventually diminish in coverage as the low
continues eastward and short-wave ridging aloft builds in by this
evening.

...Wendt.. 01/16/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!-NZXL2jSBHvyZ16zH2YXqGFEBmLzy1D1y2xB_y16NRgXHnaoOQBg2MTg9-VAeNOJV-JttW-tG=
VyjIdvpm7P33ZcwbWg$  for graphic product...

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

LAT...LON   47276789 45376727 44946727 44526854 44456943 44836986
            45566987 47196885 47226835 47276789=20


=3D =3D =3D
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