Illinois, 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 1,707 against 1,732 in 2017.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 24 Jan 2018 | Cook | Winter Weather | — | $500,000 | 2 | — |
| 29 Dec 2018 | Cook | Winter Weather | — | — | 1 | 3 |
| 24 Jan 2018 | Kane | Winter Weather | — | $250,000 | 1 | 2 |
| 20 Feb 2018 | Will | Flood | — | — | 1 | — |
| 3 Sep 2018 | Will | Lightning | — | — | 1 | — |
| 1 Dec 2018 | Christian | Tornado | EF3 | $118,900,000 | — | 22 |
| 20 Sep 2018 | Lake | Lightning | — | — | — | 3 |
| 24 Jan 2018 | Forecast zone | Winter Weather | — | $250,000 | — | 2 |
| 4 Jul 2018 | LaSalle | Lightning | — | — | — | 2 |
| 28 Aug 2018 | Lake | Lightning | — | — | — | 2 |
| 8 Sep 2018 | Jefferson | Flash Flood | — | $400,000 | — | 1 |
| 31 May 2018 | Jasper | Thunderstorm Wind | 70 mph | $10,000 | — | 1 |
| 4 Jul 2018 | Cook | Lightning | — | — | — | 1 |
| 4 Jul 2018 | Cook | Lightning | — | — | — | 1 |
| 6 Aug 2018 | Ford | Lightning | — | — | — | 1 |
| 6 Aug 2018 | Ford | Thunderstorm Wind | 58 mph | — | — | 1 |
| 1 Dec 2018 | Schuyler | Lightning | — | — | — | 1 |
| 1 Dec 2018 | Christian | Tornado | EF2 | $3,300,000 | — | — |
| 21 Feb 2018 | Vermilion | Flood | — | $3,000,000 | — | — |
| 3 Apr 2018 | Coles | Flash Flood | — | $2,000,000 | — | — |
| 20 Feb 2018 | Iroquois | Flood | — | $1,500,000 | — | — |
| 20 Feb 2018 | Kankakee | Flood | — | $1,100,000 | — | — |
| 21 Feb 2018 | Champaign | Flood | — | $1,000,000 | — | — |
| 24 Jan 2018 | Will | Winter Weather | — | $500,000 | — | — |
| 3 Apr 2018 | Saline | Tornado | EF2 | $500,000 | — | — |
| 18 Jun 2018 | Winnebago | Flash Flood | — | $500,000 | — | — |
| 1 Mar 2018 | Alexander | Flood | — | $350,000 | — | — |
| 15 May 2018 | Moultrie | Thunderstorm Wind | 81 mph | $350,000 | — | — |
| 1 Dec 2018 | Fulton | Tornado | EF1 | $350,000 | — | — |
| 1 Dec 2018 | Macon | Tornado | EF1 | $325,000 | — | — |
| 1 Mar 2018 | Gallatin | Flood | — | $300,000 | — | — |
| 30 May 2018 | DuPage | Flash Flood | — | $300,000 | — | — |
| 1 Dec 2018 | Schuyler | Tornado | EF1 | $260,000 | — | — |
| 3 Apr 2018 | Williamson | Tornado | EF1 | $250,000 | — | — |
| 1 Dec 2018 | Sangamon | Tornado | EF1 | $225,000 | — | — |
| 1 Dec 2018 | Cass | Tornado | EF1 | $200,000 | — | — |
| 31 May 2018 | Clay | Thunderstorm Wind | 70 mph | $175,000 | — | — |
| 1 Dec 2018 | Macon | Tornado | EF1 | $150,000 | — | — |
| 1 Dec 2018 | Christian | Tornado | EF0 | $140,000 | — | — |
| 3 Apr 2018 | Massac | Tornado | EF1 | $130,000 | — | — |
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
No declaration touching Illinois was made in 2018.
Flood insurance claims with a 2018 date of loss
628 NFIP claims, 525 of them paid, for $15,524,230.
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.