ACUS11 KWNS 040730
SWOMCD
SPC MCD 040730=20
IAZ000-040930-

Mesoscale Discussion 1487
NWS Storm Prediction Center Norman OK
0230 AM CDT Sat Jul 04 2026

Areas affected...Parts of south-central/southeast IA

Concerning...Severe potential...Watch unlikely=20

Valid 040730Z - 040930Z

Probability of Watch Issuance...20 percent

SUMMARY...A threat for locally damaging wind may continue overnight.

DISCUSSION...A notable outflow surge has occurred with persistent
convection near Des Moines, where a 50 kt gust was recently
observed. This cluster may continue to propagate southeastward in
the short term, given the presence of rich low-level moisture and
moderate buoyancy immediately downstream. This will result in a
threat for at least locally damaging wind continuing for the next
1-2 hours. The longevity of any severe threat may tend to be limited
by modest deep-layer shear and the influence of decayed convection
and attendant low/midlevel drying approaching the region from
southwest IA.

..Dean/Mosier.. 07/04/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8fjdWLMM_xP-eZ4Lmwq9WgbDuAd6aKDdZo344TiTmh_CQMsw0y506OeC9dEg4954iAN53JIUA= 5laxozx1dR9GOgxclk$ for graphic product...

ATTN...WFO...DVN...DMX...

LAT...LON 41629367 41789220 41439159 40759186 40599283 40699355
40879362 41309385 41439396 41629367=20

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


=3D =3D =3D
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* Origin: Capitol City Weather Station (1:2320/127)