⚠️ Severe Thunderstorm Warning – Jasper, IA; Marshall, IA; Story, IA; Tama, IA – Wednesday, June 17, 2026

Severe Thunderstorm Warning issued June 17 at 5:32AM CDT until June 17 at 6:15AM CDT by NWS Des Moines IA

Details

SVRDMX

The National Weather Service in Des Moines has issued a

* Severe Thunderstorm Warning for…
East central Story County in central Iowa…
Marshall County in central Iowa…
Southwestern Tama County in central Iowa…
Northeastern Jasper County in central Iowa…

* Until 615 AM CDT.

* At 532 AM CDT, a severe thunderstorm was located over Clemons, or
13 miles northwest of Marshalltown, moving southeast at 45 mph.

HAZARD…70 mph wind gusts and nickel size hail.

SOURCE…Radar indicated.

IMPACT…Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.

* Locations impacted include…
Marshalltown, Newton, State Center, Meskwaki Casino, Rock Creek
Lake, Le Grand, Melbourne, Kellogg, Garwin, Gilman, Albion, Rhodes,
Liscomb, Montour, Laurel, Haverhill, Clemons, Ferguson, Green
Mountain, and Marshalltown Municipal Airport.

This includes Interstate 80 between mile markers 169 and 171.

Instructions

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

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