Alert archive / Iowa / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 330, NWS Des Moines, IA

September 6, 2026Adams County, Union County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Sep 6, 2026, 3:45 PM CDT for Adams County, Union County, Iowa. It was in force for 45 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 6, 2026, 3:45 PM CDT (20:45 UTC)
Expired: Sep 6, 2026, 4:30 PM CDT
In force: 45 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, IA, Union County, IA

The radar

The Des Moines radar (KDMX), 100 km from the middle of the area, began a volume at 20:43 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 5, 6:36 PM CDT, 21 hours 9 minutes earlier.

Area forecast discussion, Sep 5, 6:36 PM CDT, 21 hours 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 10:45 AM CDT	Severe Thunderstorm Warning	DMX	Emmet	24 min
Sep 6, 12:02 PM CDT	Flash Flood Warning	DMX	Emmet, Palo Alto	6 hr
Sep 6, 12:12 PM CDT	Flood Watch	DMX	Calhoun, Crawford, Emmet, Palo Alto, Pocahontas, Sac	10 hr
Sep 6, 2:37 PM CDT	Severe Thunderstorm Warning	DMX	Sac	38 min
Sep 6, 3:47 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Sac	43 min
Sep 6, 4:13 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Webster	47 min
Sep 6, 4:19 PM CDT	Flash Flood Warning	DMX	Crawford	3 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2026 Every severe thunderstorm warning in 2026

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.