Iowa, 2018
The year's recorded storm events, federal disaster declarations and flood insurance claims.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders.
Events by hazard
Includes events recorded by forecast zone. The state's yearly total for 2018 was 2,735 against 1,942 in 2017.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 3 Feb 2018 | Winneshiek | Winter Weather | — | $4,000 | 2 | 4 |
| 30 Jun 2018 | Polk | Flash Flood | — | $1,000,000 | 1 | — |
| 19 Jul 2018 | Marshall | Tornado | EF3 | $200,000,000 | — | 23 |
| 19 Jul 2018 | Marion | Tornado | EF3 | $120,000,000 | — | 13 |
| 5 Oct 2018 | Dallas | Lightning | — | — | — | 3 |
| 18 Apr 2018 | Floyd | Heavy Snow | — | $10,000 | — | 2 |
| 13 Jul 2018 | Story | Lightning | — | — | — | 2 |
| 11 Jun 2018 | Fremont | Thunderstorm Wind | 86 mph | — | — | 2 |
| 9 May 2018 | Buena Vista | Thunderstorm Wind | 52 mph | — | — | 2 |
| 28 Aug 2018 | Cerro Gordo | Thunderstorm Wind | 64 mph | $30,000 | — | 1 |
| 30 Jun 2018 | Polk | Flood | — | $2,000,000 | — | — |
| 30 Jun 2018 | Polk | Flood | — | $2,000,000 | — | — |
| 1 Sep 2018 | Story | Lightning | — | $1,000,000 | — | — |
| 1 Jul 2018 | Black Hawk | Flood | — | $250,000 | — | — |
| 3 Sep 2018 | Black Hawk | Flood | — | $250,000 | — | — |
| 9 Jun 2018 | Butler | Flood | — | $100,000 | — | — |
| 8 Jun 2018 | Cerro Gordo | Flood | — | $100,000 | — | — |
| 1 Jul 2018 | Grundy | Flood | — | $100,000 | — | — |
| 1 Jul 2018 | Bremer | Flood | — | $100,000 | — | — |
| 20 Jun 2018 | Humboldt | Flood | — | $250,000 | — | — |
| 30 Jun 2018 | Polk | Flash Flood | — | $500,000 | — | — |
| 9 Jun 2018 | Butler | Flood | — | $100,000 | — | — |
| 22 Jun 2018 | Palo Alto | Flood | — | $100,000 | — | — |
| 20 Jun 2018 | Emmet | Flood | — | $100,000 | — | — |
| 20 Jun 2018 | Webster | Flood | — | $100,000 | — | — |
| 21 Jun 2018 | Humboldt | Flood | — | $100,000 | — | — |
| 20 Jun 2018 | Dallas | Flood | — | $100,000 | — | — |
| 21 Jun 2018 | Kossuth | Flood | — | $100,000 | — | — |
| 21 Jun 2018 | Kossuth | Flood | — | $250,000 | — | — |
| 22 Sep 2018 | Palo Alto | Flood | — | $100,000 | — | — |
| 20 Sep 2018 | Emmet | Flood | — | $100,000 | — | — |
| 7 Sep 2018 | Dallas | Flood | — | $100,000 | — | — |
| 5 Sep 2018 | Franklin | Flood | — | $100,000 | — | — |
| 5 Sep 2018 | Butler | Flood | — | $100,000 | — | — |
| 4 Sep 2018 | Tama | Flood | — | $100,000 | — | — |
| 21 Sep 2018 | Kossuth | Flood | — | $100,000 | — | — |
| 5 Sep 2018 | Wright | Flood | — | $100,000 | — | — |
| 5 Sep 2018 | Butler | Flood | — | $100,000 | — | — |
| 21 Sep 2018 | Humboldt | Flood | — | $100,000 | — | — |
| 21 Sep 2018 | Wright | Flood | — | $100,000 | — | — |
Up to 40 events with deaths, injuries, damage of $50,000 or more, or a tornado rating, ranked by deaths, injuries and damage.
Federal disaster declarations in 2018
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 12 Sep 2018 | DR-4392 | Major disaster | Severe Storm | Severe Storm And Tornadoes | 4 |
| 20 Aug 2018 | DR-4386 | Major disaster | Severe Storm | Severe Storms, Tornadoes, Straight-Line Winds, And Flooding | 31 |
Flood insurance claims with a 2018 date of loss
327 NFIP claims, 276 of them paid, for $12,389,775.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (1 Oct 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 1 Oct 2026.