Alert archive / Iowa / Flash Flood Warnings in 2026

Flash Flood Warning 29, NWS Omaha, NE

August 5, 2026Sarpy County, Nebraska; Mills County, Pottawattamie County, Iowa

NWS Omaha, NE issued this flash flood warning at Aug 5, 2026, 12:07 AM CDT for Sarpy County, Nebraska; Mills County, Pottawattamie County, Iowa. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 5, 2026, 12:07 AM CDT (05:07 UTC)
Expired
Aug 5, 2026, 5:00 AM CDT
In force
5 hr
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Flood severity
None

Counties Mills County, IA, Pottawattamie County, IA, Sarpy County, NE

The radar

The Omaha radar (KOAX), 54 km from the middle of the area, began a volume at 05:10 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 12:22 AM CDTSevere Thunderstorm WarningOAXCass, Otoe38 min
Aug 5, 2:17 AM CDTSevere Thunderstorm WarningOAXCass43 min
Aug 5, 3:26 AM CDTAreal Flood AdvisoryOAXDouglas, Sarpy3 hr
Aug 4, 11:31 PM CDTSevere Thunderstorm WarningOAXMills, Montgomery29 min
Aug 5, 12:10 AM CDTSevere Thunderstorm WarningOAXMontgomery35 min
Aug 5, 12:18 AM CDTSevere Thunderstorm WarningOAXMills, Montgomery42 min
Aug 5, 12:52 AM CDTSevere Thunderstorm WarningOAXMontgomery, Page28 min

Nearby

Flash Flood Warnings in Iowa, 2026Flash Flood Warnings in Nebraska, 2026Every flash flood 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.