Iowa Severe Severe Thunderstorm Warning | Effective 07/20/2026 16:19

Headline: 
Severe Thunderstorm Warning issued July 20 at 6:19PM CDT until July 20 at 7:00PM CDT by NWS Des Moines IA
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
July 20, 2026 - 4:19pm
Expires: 
July 20, 2026 - 5:00pm
Description: 
At 618 PM CDT, a severe thunderstorm was located near Ames, moving southeast at 30 mph. HAZARD...Two inch hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Ames, Nevada, Story City, Huxley, Roland, Gilbert, Iowa State Center, Cambridge, Zearing, McCallsburg, St. Anthony, and Ames Municipal Airport. This includes Interstate 35 between mile markers 103 and 126.
Instruction: 
A Tornado Watch remains in effect until 1000 PM CDT for central Iowa. For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Boone, IA; Hamilton, IA; Marshall, IA; Story, IA
Forcast Office: 
NWS Des Moines IA