Subj : MESO: Mesoscale Discussion 0137
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Feb 09 2023 00:45:14

ACUS11 KWNS 090045
SWOMCD
SPC MCD 090044=20
COZ000-WYZ000-UTZ000-090445-

Mesoscale Discussion 0137
NWS Storm Prediction Center Norman OK
0644 PM CST Wed Feb 08 2023

Areas affected...Southeastern WY...northwestern CO...and far eastern
UT

Concerning...Snow Squall=20

Valid 090044Z - 090445Z

SUMMARY...The potential for snow squalls should increase during the
next few hours over parts of the central Rockies. Rapid visibility
reductions in bursts of heavy snow will be possible with the more
organized squalls.

DISCUSSION...Latest water vapor imagery indicates increasing
large-scale ascent overspreading southern WY into northern CO -- in
the left exit region of an approaching mid/upper-level jet streak.
Mosaic radar data shows a related increase in snow showers
along/ahead of an approaching cold front, and this activity should
continue spreading southeastward into the evening/overnight hours.
Over the next couple hours, the environment in the vicinity of these
snow showers should become increasingly favorable for a couple
organized snow squalls, given steepening low-level lapse rates,
increasing ascent, and strengthening low-level flow. Rapid
visibility reductions will be possible in bursts of heavy snow,
especially with the more organized/banded snow squalls that can
develop over the central Rockies into the overnight hours.

...Weinman.. 02/09/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!9VEqErcjRN24CriqgaM4KQZzPC1GHD8I0dmxQTUkMwaeOQ743KQnJ921vJhYMm5aIA8yWkquV=
V-D9sgN7jcHR5SNuSw$  for graphic product...

ATTN...WFO...PUB...BOU...CYS...RIW...GJT...

LAT...LON   39130949 40080949 40800922 41370862 41970725 42490614
            42660485 42180416 40990416 39420552 38220698 38000854
            38450923 39130949=20


=3D =3D =3D
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