| Adair (County) | 17 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Adams (County) | 17 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Allamakee (County) | 22 | Flooding 25 Aug 2023 |
| Appanoose (County) | 16 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Audubon (County) | 22 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Benton (County) | 18 | Severe Storms 17 Aug 2020 |
| Black Hawk (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Boone (County) | 17 | Severe Storms 17 Aug 2020 |
| Bremer (County) | 17 | COVID-19 Pandemic 23 Mar 2020 |
| Buchanan (County) | 25 | COVID-19 Pandemic 23 Mar 2020 |
| Buena Vista (County) | 22 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Butler (County) | 25 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Calhoun (County) | 18 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Carroll (County) | 17 | COVID-19 Pandemic 23 Mar 2020 |
| Cass (County) | 19 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Cedar (County) | 18 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Cerro Gordo (County) | 15 | COVID-19 Pandemic 23 Mar 2020 |
| Cherokee (County) | 23 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Chickasaw (County) | 19 | COVID-19 Pandemic 23 Mar 2020 |
| Clarke (County) | 16 | Severe Storms and Tornadoes 14 May 2024 |
| Clay (County) | 21 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Clayton (County) | 27 | Flooding 25 Aug 2023 |
| Clinton (County) | 23 | Severe Storms 17 Aug 2020 |
| Crawford (County) | 23 | Severe Winter Storm 21 May 2025 |
| Dallas (County) | 20 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Davis (County) | 17 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Decatur (County) | 14 | COVID-19 Pandemic 23 Mar 2020 |
| Delaware (County) | 18 | COVID-19 Pandemic 23 Mar 2020 |
| Des Moines (County) | 27 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Dickinson (County) | 18 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Dubuque (County) | 21 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Emmet (County) | 19 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Fayette (County) | 23 | COVID-19 Pandemic 23 Mar 2020 |
| Floyd (County) | 20 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Franklin (County) | 22 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Fremont (County) | 19 | COVID-19 Pandemic 23 Mar 2020 |
| Greene (County) | 19 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Grundy (County) | 15 | Severe Storms 17 Aug 2020 |
| Guthrie (County) | 17 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Hamilton (County) | 21 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Hancock (County) | 15 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Hardin (County) | 18 | Severe Storms 17 Aug 2020 |
| Harrison (County) | 24 | Severe Winter Storm 21 May 2025 |
| Henry (County) | 16 | COVID-19 Pandemic 23 Mar 2020 |
| Howard (County) | 23 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Humboldt (County) | 22 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Ida (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Iowa (County) | 23 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Jackson (County) | 21 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Jasper (County) | 19 | Severe Storms and Flooding 1 Sep 2026 |
| Jefferson (County) | 12 | COVID-19 Pandemic 23 Mar 2020 |
| Johnson (County) | 24 | Severe Storms 17 Aug 2020 |
| Jones (County) | 22 | Severe Storms 17 Aug 2020 |
| Keokuk (County) | 19 | COVID-19 Pandemic 23 Mar 2020 |
| Kossuth (County) | 20 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Lee (County) | 22 | Flooding 25 Aug 2023 |
| Linn (County) | 23 | Severe Storms 17 Aug 2020 |
| Louisa (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Lucas (County) | 15 | COVID-19 Pandemic 23 Mar 2020 |
| Lyon (County) | 16 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Madison (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Mahaska (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Marion (County) | 19 | COVID-19 Pandemic 23 Mar 2020 |
| Marshall (County) | 20 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Mills (County) | 20 | Severe Storms and Tornadoes 14 May 2024 |
| Mitchell (County) | 20 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Monona (County) | 20 | Severe Winter Storm 21 May 2025 |
| Monroe (County) | 16 | COVID-19 Pandemic 23 Mar 2020 |
| Montgomery (County) | 20 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Muscatine (County) | 21 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| O'Brien (County) | 15 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Osceola (County) | 15 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Page (County) | 16 | COVID-19 Pandemic 23 Mar 2020 |
| Palo Alto (County) | 23 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Plymouth (County) | 16 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Pocahontas (County) | 22 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Polk (County) | 21 | Severe Storms and Flooding 1 Sep 2026 |
| Pottawattamie (County) | 26 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Poweshiek (County) | 15 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Ringgold (County) | 20 | Severe Storms and Tornadoes 14 May 2024 |
| Sac (County) | 19 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Scott (County) | 20 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Shelby (County) | 20 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Sioux (County) | 15 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Story (County) | 22 | Severe Storms and Flooding 1 Sep 2026 |
| Tama (County) | 21 | Severe Storms, Tornadoes, and Flooding 24 May 2024 |
| Taylor (County) | 14 | COVID-19 Pandemic 23 Mar 2020 |
| Union (County) | 21 | Severe Storms and Tornadoes 14 May 2024 |
| Van Buren (County) | 16 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Wapello (County) | 20 | COVID-19 Pandemic 23 Mar 2020 |
| Warren (County) | 18 | Severe Storms and Flooding 1 Sep 2026 |
| Washington (County) | 15 | Severe Storms 17 Aug 2020 |
| Wayne (County) | 15 | COVID-19 Pandemic 23 Mar 2020 |
| Webster (County) | 20 | Severe Storms, Straight-Line Winds, and Tornadoes 23 Feb 2022 |
| Winnebago (County) | 16 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Winneshiek (County) | 21 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Woodbury (County) | 18 | Severe Winter Storm 21 May 2025 |
| Worth (County) | 16 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |
| Wright (County) | 24 | Severe Storms, Flooding, Straight-Line Winds, and Tornadoes 24 Jun 2024 |