Subj : MESO: Mesoscale Discussion 2347
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Dec 26 2023 01:58:12

ACUS11 KWNS 260157
SWOMCD
SPC MCD 260156=20
MNZ000-SDZ000-NDZ000-NEZ000-COZ000-260630-

Mesoscale Discussion 2347
NWS Storm Prediction Center Norman OK
0756 PM CST Mon Dec 25 2023

Areas affected...Southeast North Dakota...much of South Dakota...far
western Minnesota...and central Nebraska

Concerning...Blizzard=20

Valid 260156Z - 260630Z

SUMMARY...Heavy snow, freezing rain and blizzard conditions will
continue into the overnight hours across portions of the central and
northern Plains.

DISCUSSION...A surface low has drifted northwest across Iowa through
the day today and the 01Z surface analysis shows the surface low
southeast of Sioux Falls, SD with a central pressure around 1001mb
as it continues to occlude. Strong easterly warm air advection to
the north of this surface low continues, and has somewhat
overperformed from what most model guidance has shown. Therefore,
most areas which were seeing freezing rain earlier have now warmed
above freezing. The only exceptions is a confined area across
eastern South Dakota and far southeast North Dakota where some
freezing rain continues.

Elsewhere, a broad region of light to moderate snow continues within
a broad deformation zone from far western Minnesota to northern
Kansas. Within this, some heavier snow is occurring. Especially
across South Dakota and southern North Dakota. Winds are quite
strong in most of the deformation zone (20 to 30 knot sustained
winds with gusts to 30-45 knots). However, observations show greater
visibility restriction farther west where temperatures are in the
low 20s and snow ratios are likely higher.=20

This entire region of wintry precipitation will drift slowly east
into the overnight hours as the surface low continues to move
northwest.

...Bentley.. 12/26/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!4LhqVqAQVeOtfTezKheZOEfz4iav4ZbiaiE7Rj-ahN1bdLsUYXoRxFU-qA5tIicNGLYQ8SXoz=
N-k3fRwj2ZY3TabTSU$  for graphic product...

ATTN...WFO...FGF...FSD...ABR...GID...BIS...LBF...UNR...BOU...
CYS...

LAT...LON   40879898 40609958 40530048 40650127 40800181 41090236
            42470302 44100338 44970303 46270101 47679779 47739624
            47159611 46399671 44539725 42799855 41829875 40879898=20


=3D =3D =3D
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