 Locations impacted include Iowa Falls, Eldora, Grundy Center, Ackley, Conrad, Wellsburg, Steamboat Rock, Holland, Stout, Beeman, Witten, Oasa, Pine Lake State Park, Iowa Falls Municipal Airport, Eldora Municipal Airport, and Ackley Municipal Airport. Prepare immediately for large hail and damaging winds. People outside should move immediately to shelter inside a strong building. Stay away from windows.