⚠️ Severe Thunderstorm Warning – Harrison, IA; Pottawattamie, IA; Shelby, IA – Tuesday, September 15, 2026

Severe Thunderstorm Warning issued September 15 at 12:54AM CDT until September 15 at 2:00AM CDT by NWS Omaha/Valley NE

Details

SVROAX

The National Weather Service in Omaha has issued a

* Severe Thunderstorm Warning for…
Northern Pottawattamie County in southwestern Iowa…
Southeastern Harrison County in southwestern Iowa…
Southern Shelby County in southwestern Iowa…

* Until 200 AM CDT.

* At 1254 AM CDT, a severe thunderstorm was located 4 miles south of
Missouri Valley, or 12 miles east of Blair, moving east at 40 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to roofs, siding, and trees.

* Locations impacted include…
Neola, Minden, Persia, Shelby, Avoca and Walnut.

This includes Interstate 80 in Iowa between mile markers 20 and 48.

Instructions

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.