National Weather Service United States Department of Commerce


During the early morning hours of July 17, 2016, a line of thunderstorms tracked from southeast South Dakota to eastern Iowa, bringing damaging winds to many locations along its path. In north central Iowa, locations such as Eagle Grove, Fort Dodge, and Steamboat Rock bore much of the damage. It appears that all of the wind damage in central Iowa was the result of straight-line winds. Multiple buildings were impacted along with hundreds of trees downed, along with crop damage. These storms also brought heavy rainfall to northern Iowa and resulted in flash flooding to some locations, including Mason City.


Click here for an interactive damage report map

Radar loop and NWS warnings as the line of storms moved through central Iowa
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