Alert archive / Iowa / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 220, NWS Des Moines, IA

September 3, 20254 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Sep 3, 2025, 5:56 AM CDT for 4 counties in Iowa. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 3, 2025, 5:56 AM CDT (10:56 UTC)
Expired: Sep 3, 2025, 6:18 AM CDT
In force: 22 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boone County, IA, Calhoun County, IA, Greene County, IA, Webster County, IA

The radar

The Des Moines radar (KDMX), 72 km from the middle of the area, began a volume at 10:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 3, 3:56 AM CDT, 2 hours earlier.

Area forecast discussion, Sep 3, 3:56 AM CDT, 2 hours before

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Hazardous weather outlook, Sep 3, 4:09 AM CDT, 1 hour 47 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
409 AM CDT Wed Sep 3 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-040915-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
409 AM CDT Wed Sep 3 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Scattered showers and thunderstorms will continue to spread
across the area today as a cold front passes across Iowa. The
severe weather threat is low.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Additional showers are expected Thursday evening into Friday,
with a few non-severe storms possible but unlikely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated, however rainfall reports
are always appreciated.

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 3, 6:43 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Greene, Guthrie	47 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.