- Total hailstorms, 2012-2021: 685
- Total property damage caused by hailstorms: $20.3 million (#19 highest)
- Annual property damage: $63.73 per 100 residents. (#16 highest)
- Worst hailstorm: 2014 storm in Adair ($10.0 million in property damage)
- Event description from NOAA (excerpted): A very dynamic pattern was in place over the state with a closed low located over southern Canada into the north-central U.S. A cold front moved into Iowa during the day and moved across the state. … Thunderstorms formed over northeast Nebraska by sunrise and continued to propagate east into Iowa. The storms intensified as they moved across the state, into a forward-moving MCS. As it strengthened into a derecho, winds of 70-80 mph were reported over a large swath of the state. All modes of severe weather occurred. Widespread wind damage was reported to trees, power lines, and structures from the high winds. In addition, very large hail occurred. Some of the larger hail included 3- to 4-inch diameter hail in Calhoun County near Rockwell City, and 3.5-inch diameter hail in Warren County at Sandyville. Several tornadoes were confirmed. Very heavy rainfall occurred with the storms. The rain lead to flooding and flash flooding in many areas of northern and central Iowa. By the end of the month, a presidential disaster declaration had been made for the following nine Iowa counties: Adams, Clarke, Decatur, Mills, Montgomery, Pottawattamie, Ringgold, Taylor, and Wayne. [The governor] also requested a disaster declaration [on July 24] for the following 26 Iowa Counties: Allamakee, Buchanan, Buena Vista, Butler, Cherokee, Chickasaw, Clay, Dickinson, Emmet, Fayette, Franklin, Hancock, Humboldt, Ida, Kossuth, Lyon, Osceola, Palo Alto, Plymouth, Pocahontas, Sac, Sioux, Winnebago, Winneshiek, Woodbury, and Wright.