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Iowa hail history, county by county
14,523 storm reports across 99 Iowa counties — 6,641 hail and 7,882 severe thunderstorm wind, $222.1M in reported damage. Peak month statewide is June. Pick a county for its full searchable record.
Counties covered
99
every county with a report
Hail reports
6,641
2010 – present
Wind reports
7,882
58 mph gust threshold
Reported damage
$222.1M
property + crop, as filed
Busiest Iowa counties
| County | Total reports | Hail | Per year | Largest hail | Last report |
|---|---|---|---|---|---|
| Polk County | 645 | 286 | 40.3 | 3.25" | 2025-07-30 |
| Linn County | 550 | 244 | 32.4 | 2.75" | 2026-06-17 |
| Scott County | 434 | 156 | 25.5 | 4" | 2026-06-17 |
| Story County | 328 | 176 | 20.5 | 2.75" | 2025-09-22 |
| Johnson County | 295 | 138 | 17.4 | 2.75" | 2026-06-17 |
| Woodbury County | 290 | 129 | 17.1 | 2.75" | 2026-06-30 |
| Dubuque County | 272 | 98 | 16 | 3.5" | 2026-06-10 |
| Dallas County | 268 | 100 | 16.8 | 3" | 2025-08-10 |
| Benton County | 265 | 120 | 15.6 | 2" | 2026-06-17 |
| Warren County | 255 | 155 | 15.9 | 3.5" | 2025-09-17 |
| Marion County | 236 | 109 | 14.8 | 4" | 2025-06-20 |
| Buchanan County | 226 | 72 | 13.3 | 3.25" | 2026-06-10 |
| Black Hawk County | 210 | 105 | 13.1 | 3.5" | 2025-09-16 |
| Clinton County | 206 | 71 | 12.1 | 2" | 2026-06-28 |
| Pottawattamie County | 202 | 104 | 11.9 | 4" | 2026-06-30 |
| Sioux County | 196 | 100 | 11.5 | 2.5" | 2026-06-30 |
| Des Moines County | 189 | 58 | 11.1 | 2.75" | 2026-06-17 |
| Jones County | 189 | 63 | 11.1 | 3" | 2026-06-10 |
| Lee County | 187 | 74 | 11 | 4" | 2026-05-04 |
| Cedar County | 184 | 68 | 10.8 | 2.75" | 2026-06-17 |
Where the biggest hail has fallen in Iowa
| County | Largest hail on record | Hail reports |
|---|---|---|
| Scott County | 4" | 156 |
| Marion County | 4" | 109 |
| Pottawattamie County | 4" | 104 |
| Lee County | 4" | 74 |
| Adair County | 4" | 74 |
| Calhoun County | 4" | 59 |
| Lyon County | 4" | 70 |
| Cherokee County | 4" | 59 |
| Dubuque County | 3.5" | 98 |
| Warren County | 3.5" | 155 |
Iowa storm season by month
Combined hail and severe wind reports by month, all counties, 14,523 reports.
All Iowa counties (99)
Adair County (139)Adams County (86)Allamakee County (71)Appanoose County (108)Audubon County (86)Benton County (265)Black Hawk County (210)Boone County (155)Bremer County (126)Buchanan County (226)Buena Vista County (106)Butler County (148)Calhoun County (121)Carroll County (125)Cass County (117)Cedar County (184)Cerro Gordo County (183)Cherokee County (115)Chickasaw County (76)Clarke County (127)Clay County (154)Clayton County (128)Clinton County (206)Crawford County (101)Dallas County (268)Davis County (55)Decatur County (70)Delaware County (140)Des Moines County (189)Dickinson County (175)Dubuque County (272)Emmet County (97)Fayette County (108)Floyd County (168)Franklin County (111)Fremont County (108)Greene County (89)Grundy County (70)Guthrie County (170)Hamilton County (86)Hancock County (114)Hardin County (116)Harrison County (156)Henry County (120)Howard County (76)Humboldt County (96)Ida County (105)Iowa County (132)Jackson County (101)Jasper County (151)Jefferson County (91)Johnson County (295)Jones County (189)Keokuk County (108)Kossuth County (172)Lee County (187)Linn County (550)Louisa County (62)Lucas County (62)Lyon County (117)Madison County (114)Mahaska County (87)Marion County (236)Marshall County (149)Mills County (143)Mitchell County (81)Monona County (72)Monroe County (58)Montgomery County (119)Muscatine County (159)O'Brien County (142)Osceola County (88)Page County (123)Palo Alto County (94)Plymouth County (183)Pocahontas County (97)Polk County (645)Pottawattamie County (202)Poweshiek County (84)Ringgold County (63)Sac County (75)Scott County (434)Shelby County (109)Sioux County (196)Story County (328)Tama County (96)Taylor County (128)Union County (113)Van Buren County (141)Wapello County (162)Warren County (255)Washington County (141)Wayne County (53)Webster County (166)Winnebago County (70)Winneshiek County (117)Woodbury County (290)Worth County (67)Wright County (104)
Source: NOAA NCEI Storm Events Database, U.S. public domain. Counties with no storm report on file do not have a page. Reference only — not for insurance or legal use.