Illinois, 2004
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 2004 was 1,655 against 1,765 in 2003.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 20 Apr 2004 | LaSalle | Tornado | F3 | — | 8 | 7 |
| 22 Dec 2004 | Union | Winter Storm | — | $100,000 | 1 | 1 |
| 24 May 2004 | Scott | Tornado | F1 | — | 1 | 1 |
| 25 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 15 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 31 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 6 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 6 Jan 2004 | Iroquois | Cold/Wind Chill | — | — | 1 | — |
| 7 Jan 2004 | Kane | Cold/Wind Chill | — | — | 1 | — |
| 31 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 18 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 19 Jan 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 2 Feb 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 6 Feb 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 18 Feb 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 5 Mar 2004 | Edgar | High Wind | 58 mph | — | 1 | — |
| 28 Jan 2004 | Rock Island | Cold/Wind Chill | — | — | 1 | — |
| 8 Mar 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 9 Mar 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 15 Feb 2004 | Cook | Cold/Wind Chill | — | — | 1 | — |
| 23 Dec 2004 | Williamson | Cold/Wind Chill | — | — | 1 | — |
| 5 Mar 2004 | Champaign | High Wind | 58 mph | — | — | 6 |
| 20 Apr 2004 | Putnam | Tornado | F2 | $8,000,000 | — | 5 |
| 24 Nov 2004 | Sangamon | Winter Storm | — | — | — | 4 |
| 30 May 2004 | Logan | Tornado | F0 | $250,000 | — | 3 |
| 30 May 2004 | Clay | Thunderstorm Wind | 75 mph | — | — | 3 |
| 13 Jul 2004 | Woodford | Tornado | F4 | — | — | 3 |
| 18 Oct 2004 | Johnson | Tornado | F2 | $500,000 | — | 2 |
| 24 May 2004 | Sangamon | Thunderstorm Wind | 79 mph | $80,000 | — | 2 |
| 27 May 2004 | Franklin | Thunderstorm Wind | 75 mph | $70,000 | — | 2 |
| 24 May 2004 | Morgan | Tornado | F2 | $4,000,000 | — | 1 |
| 13 Jul 2004 | Piatt | Thunderstorm Wind | 67 mph | $800,000 | — | 1 |
| 4 Jul 2004 | Wabash | Thunderstorm Wind | 60 mph | $25,000 | — | 1 |
| 18 Oct 2004 | Johnson | Tornado | F1 | $10,000 | — | 1 |
| 30 May 2004 | Kendall | Thunderstorm Wind | 58 mph | — | — | 1 |
| 30 Mar 2004 | Will | Lightning | — | — | — | 1 |
| 30 May 2004 | Richland | Thunderstorm Wind | 63 mph | — | — | 1 |
| 11 Jun 2004 | Ogle | Lightning | — | — | — | 1 |
| 20 Apr 2004 | Will | Tornado | F1 | $5,000,000 | — | — |
| 13 Jul 2004 | Champaign | Thunderstorm Wind | 90 mph | $2,200,000 | — | — |
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 2004
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 23 Apr 2004 | DR-1513 | Major disaster | Severe Storm | Severe Storms And Tornadoes | 4 |
Flood insurance claims with a 2004 date of loss
257 NFIP claims, 174 of them paid, for $2,369,933.
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.