From NWS
2004: Severe thunderstorms produced very large hail, strong winds, and heavy rain across Iowa. Near Kanawha in Hancock County 3 inch diameter hail fell then was followed just 30 minutes later by incredible 5.5 inch diameter hail at the same location from a different storm. Baseball to tennis ball sized hail was also reported near Gilmore City and Odebolt. In central Iowa 60 to 75 mph wind gusts blew cars off highways and in southern Iowa 3 to 4 inches of rain caused flash flooding in Davis County.

1965: Three significant tornadoes touched down in central and eastern Iowa including an F4 that killed 1 person and injured 17 others as it tracked across rural Benton County from south of La Porte City to near Mount Auburn. Very large hail also fell with 2 to 3 inch diameter stones reported in Black Hawk, Dubuque, and Clinton counties.

Posted under Weather History