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

Severe Thunderstorm Warning issued August 12 at 4:37AM CDT until August 12 at 5:30AM CDT by NWS Quad Cities IA IL

Details

SVRDVN

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for…
Northwestern Johnson County in east central Iowa…
Southern Benton County in east central Iowa…
Southwestern Linn County in east central Iowa…
Northern Iowa County in east central Iowa…

* Until 530 AM CDT.

* At 436 AM CDT, a severe thunderstorm was located over Belle Plaine,
or 13 miles northwest of Marengo, moving east at 40 mph.

HAZARD…Quarter size hail.

SOURCE…Radar indicated.

IMPACT…Damage to vehicles is expected.

* This severe thunderstorm will be near…
Belle Plaine, Blairstown, Luzerne, Koszta, and Hannen Lake Park
around 440 AM CDT.
Marengo around 445 AM CDT.
Norway, Iowa County Fairgrounds, and Watkins around 450 AM CDT.
West Amana and High Amana around 455 AM CDT.

Other locations in the path of this severe thunderstorm include
Walford, Amana, East Amana, Middle Amana, South Amana, Cedar Rapids,
Fairfax, Swisher, Cedar Rapids Municipal Airport, Shueyville and Cou
Falls.

This includes Interstate 380 between mile markers 2 and 19.

Instructions

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

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