Alert archive / Iowa / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 91, NWS Omaha, NE

May 16, 20264 counties in Iowa

NWS Omaha, NE issued this severe thunderstorm warning at May 16, 2026, 4:32 PM CDT for 4 counties in Iowa. It was in force for 43 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: May 16, 2026, 4:32 PM CDT (21:32 UTC)
Expired: May 16, 2026, 5:15 PM CDT
In force: 43 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA

The radar

The Omaha radar (KOAX), 95 km from the middle of the area, began a volume at 21:33 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 Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 1:38 PM CDT, 2 hours 54 minutes earlier.

Area forecast discussion, May 16, 1:38 PM CDT, 2 hours 54 minutes before

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Hazardous weather outlook, May 16, 1:40 PM CDT, 2 hours 52 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
140 PM CDT Sat May 16 2026

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-171845-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-Page-
Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-Stanton-
Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-Saunders-Douglas-
Sarpy-Seward-Lancaster-Cass-Otoe-Saline-Jefferson-Gage-Johnson-
Nemaha-Pawnee-Richardson-
140 PM CDT Sat May 16 2026

This Hazardous Weather Outlook is for southwest Iowa, west central
Iowa, east central Nebraska, northeast Nebraska and southeast
Nebraska.

.DAY ONE...This afternoon and tonight.

Strong to severe thunderstorms may develop across the area/move into
the area after 4 PM (30% chance), with a better chance for storms
after 9 PM (70-90%). Strong winds (75+ mph) large hail, and tornadoes
will be possible, with tornadoes more of a threat through the
afternoon and evening, and wind a greater threat overnight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Repeated rounds of showers and storms are forecast Sunday and
Monday -- primarily during the afternoon and evening hours. Large
hail and damaging winds, and tornadoes (some possibly strong) are
all possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time, but reports of
severe weather are appreciated.

In the hours before

Local storm report, May 16, 11:26 AM CDT, 5 hours 6 minutes before

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Local storm report, May 16, 12:55 PM CDT, 3 hours 37 minutes before

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Local storm report, May 16, 12:58 PM CDT, 3 hours 34 minutes before

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Local storm report, May 16, 2:17 PM CDT, 2 hours 15 minutes before

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Local storm report, May 16, 2:18 PM CDT, 2 hours 14 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 7:03 PM CDT	Severe Thunderstorm Warning	OAX	Saline	34 min
May 15, 8:16 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	44 min
May 15, 8:46 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	28 min
May 15, 9:43 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	47 min
May 15, 10:01 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Washington	44 min
May 15, 10:14 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Douglas, Saunders, Washington	34 min
May 15, 10:25 PM CDT	Severe Thunderstorm Warning	OAX	Washington	11 min
May 16, 5:38 PM CDT	Severe Thunderstorm Warning	OAX	Platte	52 min
May 16, 6:17 PM CDT	Severe Thunderstorm Warning	OAX	Platte	43 min
May 16, 4:42 PM CDT	Severe Thunderstorm Warning	OAX	Page	28 min
May 16, 5:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Montgomery	51 min
May 16, 5:24 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Pottawattamie	51 min
May 16, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	30 min
May 16, 6:49 PM CDT	Flash Flood Warning	OAX	Montgomery	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.