Subj : MESO: Mesoscale Discussion 2026
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Wed Dec 14 2022 06:02:41

ACUS11 KWNS 140602
SWOMCD
SPC MCD 140602=20
WIZ000-MIZ000-MNZ000-141100-

Mesoscale Discussion 2026
NWS Storm Prediction Center Norman OK
1202 AM CST Wed Dec 14 2022

Areas affected...portions of northern Wisconsin and upper Michigan

Concerning...Freezing rain=20

Valid 140602Z - 141100Z

SUMMARY...Periods of light to moderate freezing rain and mixed
precipitation will likely continue overnight with total ice
accumulation rates of 0.05 in/hr A transition to snow may occur
later overnight.

DISCUSSION...To the east of a deep surface and upper-level cyclone
over the central and northern Plains, a broad area of wintry
precipitation was ongoing across portions of the upper Midwest.
Additional stratiform precipitation should develop and expand
northward with strong mid-level warm advection occurring. Mid-level
warming should continue overnight as the cyclones warm conveyor
shifts northward into WI and MN. A prominent 1-2C warm nose will
favor freezing rain and mixed precipitation types. Some hi-res
models show heavier shower/weak convective elements may develop and
support locally heavier ice accumulations as the maximum in dynamic
lift and any weak slantwise/upright instability are released. Total
ice accumulations of 0.05 to 0.1 in/hr inches are possible over the
next several hours. A transition to mixed p-type or snow will be
possible after 10z as cooler air shifts eastward.

...Lyons.. 12/14/2022

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!_bTj3X-K7K88GctahCwBIm5u2aSSsQWmvXapqpZcZ8NWUJAZgkVSwGjeU660yC9fzF55dsdDO=
YLWlHYY_wje4uVyN4w$  for graphic product...

ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

LAT...LON   46548938 46398868 46228847 46008843 45608849 45138865
            44888919 44948936 45029009 45089058 45369138 46129237
            46839273 47099225 46529038 46548938=20


=3D =3D =3D
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