Subj : MESO: Mesoscale Discussion 1505
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Wed Jul 12 2023 13:44:51

ACUS11 KWNS 121344
SWOMCD
SPC MCD 121344=20
ILZ000-IAZ000-121515-

Mesoscale Discussion 1505
NWS Storm Prediction Center Norman OK
0844 AM CDT Wed Jul 12 2023

Areas affected...Eastern Iowa and northern Illinois

Concerning...Severe Thunderstorm Watch 476...

Valid 121344Z - 121515Z

The severe weather threat for Severe Thunderstorm Watch 476
continues.

SUMMARY...A damaging wind threat is expected to persist through the
morning. Currently a downstream watch is unlikely.

DISCUSSION...A bowing segment has developed across eastern Iowa
ahead of the main squall line. Reflectivity and velocity from KDVN
suggest a rear inflow jet may be developing which could increase the
potential for some damaging wind gusts across eastern Iowa. However,
farther east, across northern Illinois and far eastern Iowa where
this bowing segment is moving toward, temperatures are in the mid
60s with progressively decreasing instability. Therefore, expect
intensity of this bowing segment to wane once it reaches northern
Illinois. Extension of watch 476 into eastern Iowa has been
coordinated with WFO DVN to cover the near-term threat, but a
downstream severe thunderstorm watch into Illinois is unlikely at
this time.

...Bentley/Bunting.. 07/12/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!6CkeMbs1E2AGvoton82Qj3k45tmmyGLQAf0f-JvvoheMsx6RwweWx8efWYzizKXai4-RsrrRx=
J9y9nM3dmWnziVd_CU$  for graphic product...

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

LAT...LON   41299184 41519202 41849199 41979198 42259108 42288989
            42198934 41698922 41288980 41219109 41299184=20


=3D =3D =3D
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