Wisconsin, 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 1,176 against 759 in 2003.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 23 Jun 2004 | Green Lake | Tornado | F3 | $675,000 | 1 | 1 |
| 8 May 2004 | Vernon | Flash Flood | — | $15,000 | 1 | — |
| 18 Apr 2004 | Clark | Strong Wind | 55 mph | $500 | 1 | — |
| 23 Jun 2004 | Adams | Tornado | F1 | $100,000 | — | 13 |
| 1 Jun 2004 | Fond du Lac | Flood | — | $4,440,000 | — | — |
| 23 Jun 2004 | Adams | Thunderstorm Wind | 64 mph | $60,000 | — | 5 |
| 23 Jun 2004 | Monroe | Tornado | F1 | $75,000 | — | 3 |
| 1 Jun 2004 | Columbia | Flood | — | $3,940,000 | — | — |
| 1 Jun 2004 | Dodge | Flood | — | $2,800,000 | — | — |
| 1 Jun 2004 | Jefferson | Flood | — | $2,640,000 | — | — |
| 25 Mar 2004 | Washburn | Dense Fog | — | — | — | 2 |
| 20 May 2004 | Dodge | Heavy Rain | — | — | — | 2 |
| 1 Jun 2004 | Green Lake | Flood | — | $2,720,000 | — | — |
| 1 Jun 2004 | Sheboygan | Flood | — | $1,000,000 | — | — |
| 1 Jun 2004 | Sauk | Flood | — | $2,100,000 | — | — |
| 1 Jun 2004 | Marquette | Flood | — | $1,200,000 | — | — |
| 1 Jun 2004 | Kenosha | Flood | — | $3,000,000 | — | — |
| 23 Jun 2004 | Wood | Thunderstorm Wind | 58 mph | — | — | 1 |
| 27 Aug 2004 | Winnebago | Lightning | — | — | — | 1 |
| 1 Jun 2004 | Washington | Flood | — | $3,000,000 | — | — |
| 23 Jun 2004 | Dodge | Tornado | F3 | $8,000,000 | — | — |
| 1 Jun 2004 | Ozaukee | Flood | — | $2,610,000 | — | — |
| 3 Aug 2004 | Columbia | Hail | 3.00 in | $6,000,000 | — | — |
| 23 Jun 2004 | Outagamie | Tornado | F1 | $6,800,000 | — | — |
| 23 Jun 2004 | Fond du Lac | Tornado | F3 | $6,000,000 | — | — |
| 1 Jun 2004 | Racine | Flood | — | $1,000,000 | — | — |
| 1 Jun 2004 | Dane | Flood | — | $1,000,000 | — | — |
| 1 Jun 2004 | Waukesha | Flood | — | $1,000,000 | — | — |
| 1 Jun 2004 | Walworth | Flood | — | $500,000 | — | — |
| 1 Jun 2004 | Rock | Flood | — | $1,000,000 | — | — |
| 3 Aug 2004 | Columbia | Thunderstorm Wind | 75 mph | $3,000,000 | — | — |
| 9 Jun 2004 | Dodge | Flash Flood | — | $2,000,000 | — | — |
| 23 Jun 2004 | Fond du Lac | Tornado | F3 | $1,610,000 | — | — |
| 23 Jun 2004 | Green Lake | Tornado | F3 | $1,410,000 | — | — |
| 13 Jul 2004 | Manitowoc | Tornado | F1 | $1,600,000 | — | — |
| 23 Jun 2004 | Marquette | Tornado | F2 | $1,000,000 | — | — |
| 1 Jun 2004 | Lafayette | Flood | — | $500,000 | — | — |
| 23 Jun 2004 | Dane | Tornado | F1 | $1,490,000 | — | — |
| 14 May 2004 | Kenosha | Flood | — | $960,000 | — | — |
| 1 Jun 2004 | Green | 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 2004
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 18 Jun 2004 | DR-1526 | Major disaster | Severe Storm | Severe Storms And Flooding | 44 |
Flood insurance claims with a 2004 date of loss
261 NFIP claims, 195 of them paid, for $1,477,096.
Sources: NOAA NCEI Storm Events through 30 Jun 2026; OpenFEMA DisasterDeclarationsSummaries v2 (29 Sep 2026); OpenFEMA NfipClaims v3 (8 Sep 2026). Built 30 Sep 2026.