Subj : MESO: Mesoscale Discussion 1558
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Jul 15 2023 01:23:47

ACUS11 KWNS 150123
SWOMCD
SPC MCD 150123=20
ILZ000-150300-

Mesoscale Discussion 1558
NWS Storm Prediction Center Norman OK
0823 PM CDT Fri Jul 14 2023

Areas affected...Parts of Northern IL

Concerning...Severe Thunderstorm Watch 492...

Valid 150123Z - 150300Z

The severe weather threat for Severe Thunderstorm Watch 492
continues.

SUMMARY...Some threat for damaging wind may spread east of WW 492,
so the watch will be locally expanded.

DISCUSSION...A modestly organized line of storms has accelerated
eastward across northern IL, with a few reports of tree damage
recently noted. Moderate buoyancy and marginally favorable
deep-layer shear (as noted on the 00Z ILX sounding) will continue to
support a short-term threat of damaging wind, with some threat
potentially spreading east of WW 492 into parts of northeast IL,
where low-level lapse rates remain modestly steepened within a warm
and moist environment this evening. WW 492 will be expanded eastward
to reflect the potential damaging-wind threat over the next 1-2
hours.

...Dean.. 07/15/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!5n6muMEGOpWWTwaXNmlKX7Ps69Fiy5qevJyDx3riACtujUjZBXn9FHQIGes8SU4PG15VuTY4L=
4LizuYqD8ulotdZk1I$  for graphic product...

ATTN...WFO...LOT...ILX...DVN...

LAT...LON   40739020 41538952 42078932 42328910 42358779 41858759
            40948769 40758856 40738902 40708957 40739020=20


=3D =3D =3D
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