⚠️ Severe Thunderstorm Warning – Benton, IA; Iowa, IA – Wednesday, August 12, 2026

Severe Thunderstorm Warning issued August 12 at 6:39AM CDT until August 12 at 7:30AM CDT by NWS Quad Cities IA IL

Details

SVRDVN

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for…
Southern Benton County in east central Iowa…
Iowa County in east central Iowa…

* Until 730 AM CDT.

* At 639 AM CDT, a severe thunderstorm was located over Hannen Lake
Park, or near Marengo, moving southeast at 60 mph.

HAZARD…60 mph wind gusts and quarter size hail.

SOURCE…Radar indicated.

IMPACT…Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* Locations impacted include…
Marengo, Williamsburg, Belle Plaine, Walford, Blairstown, Keystone,
Norway, Ladora, Luzerne, Amana, Conroy, Middle Amana, South Amana,
Homestead, West Amana, Upper South Amana, East Amana, Genoa Bluff,
Hannen Lake Park, and Watkins.

This includes Interstate 80 in Iowa between mile markers 212 and 229.

Instructions

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