ACUS11 KWNS 050841
SWOMCD
SPC MCD 050840=20
TNZ000-KYZ000-INZ000-ILZ000-MOZ000-KSZ000-051345-

Mesoscale Discussion 0004
NWS Storm Prediction Center Norman OK
0240 AM CST Sun Jan 05 2025

Areas affected...east-central Kansas...much of central
Missouri...southern Illinois...and far western Kentucky.

Concerning...Freezing rain=20

Valid 050840Z - 051345Z

SUMMARY...An expansive region of mostly freezing rain with some
embedded thunderstorms will persist through the remainder of the
overnight period.

DISCUSSION...Freezing rain and isolated sleet is being observed
early this morning across a broad region from south-central Kansas
to western Illinois and far western Kentucky. A broad region of
isentropic ascent will support continued precipitation development
along the frontal zone through the early morning hours. In addition,
low-level cold air will continue to advect into the region with an
area of arctic high pressure extending from the northern Plains to
the Lower Ohio Valley.

Temperatures are currently above freezing across southeast Missouri
and into western Kentucky. However, wet-bulb cooling should result
in below freezing temperatures shortly after precipitation begins.=20

Widespread lightning has been observed with the freezing rain
activity across central/eastern Kansas over the last 1 to 2 hours.=20
Forecast soundings show elevated instability which should continue
to support the threat for thunderstorms through the early morning
hours across eastern Kansas and into Missouri. These heavier
precipitation cores may not be that efficient at ice accretion where
temperatures are in the upper 20s to low 30s. However, where
temperatures are in the mid 20s or colder, these heavier
precipitation rates could result in substantial freezing rain
accretion in a very short period.

..Bentley.. 01/05/2025

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!-NNkWRW4QKLEXaz_AooBEwWlNBXhtMwXHaSgcIHXmqegCPHY8OQZGE1t-EZzZlJ9asIn6e_1b=
wvDvO2K6O6wUSRQQlk$  for graphic product...

ATTN...WFO...OHX...PAH...MEG...LSX...SGF...EAX...TOP...ICT...

LAT...LON   37389685 37429731 37569759 37919757 38239713 38399651
            38629522 38659105 38648996 38348878 37538768 36798709
            36298712 36899163 37289338 37619566 37409657 37389685=20


=3D =3D =3D
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