Subj : MESO: Mesoscale Discussion 0102
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Wed Jan 25 2023 05:44:58

ACUS11 KWNS 250544
SWOMCD
SPC MCD 250544=20
OHZ000-KYZ000-INZ000-ILZ000-MOZ000-251145-

Mesoscale Discussion 0102
NWS Storm Prediction Center Norman OK
1144 PM CST Tue Jan 24 2023

Areas affected...southern portions of IL...IN...and OH

Concerning...Heavy snow=20

Valid 250544Z - 251145Z

SUMMARY...Broad precipitation will continue to overspread the region
from around 06-12z. Localized heavy snowfall rates greater than
1"/hr will be possible.

DISCUSSION...The low-level precipitation field continues to expand
in advance of a negatively tilted upper-level trough ejecting over
the central CONUS. Snowfall rates of 1"/hr have been reported from
eastern OK northeastward through southeastern MO, and in some areas
localized snowfall rates around 2"/hr have been observed. The broad
precipitation band responsible for these snowfall rates continues to
translate northeastward in tandem with 700-mb frontogenesis and
mesoscale isentropic ascent. These features are expected to persist
for the next several hours and produce 1"/hr snowfall rates through
12z, generally advancing from west to east across the outlined area.
Snowfall rates of 2"/hr or greater will be possible in localized
areas where enhanced forcing overlaps non-zero potential buoyancy
(10-20 J/kg MUCAPE) in the dendritic growth zone.

...Flournoy/Moore.. 01/25/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!7TRhG6QSQ7J_QFWHmlMANMez4BgBEL4vygt5i3O38Pqt-_pawioGOrIQUYuZzlHxEUiNK3DuC=
ZzEoGiZarsyp7I9ya0$  for graphic product...

ATTN...WFO...PBZ...RLX...CLE...ILN...LMK...IWX...IND...PAH...
ILX...LSX...

LAT...LON   37198956 37399036 37929051 38469002 39188841 39818684
            40478462 40608266 40298174 39718176 39148221 38908311
            38748421 38478545 38188653 37648835 37198956=20


=3D =3D =3D
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