Wisconsin, 1984
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 1984 was 309 against 381 in 1983.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 7 Jun 1984 | Iowa | Tornado | F5 | $250,000 | 9 | 200 |
| 27 Apr 1984 | Waukesha | Tornado | F4 | $2,500,000 | 1 | 14 |
| 27 Apr 1984 | Winnebago | Tornado | F4 | $2,500,000 | 1 | 10 |
| 27 Apr 1984 | Oneida | Tornado | F3 | $25,000,000 | 1 | 5 |
| 27 Apr 1984 | Outagamie | Tornado | F4 | $2,500,000 | — | 9 |
| 27 Apr 1984 | Vilas | Tornado | F3 | $25,000,000 | — | 3 |
| 16 Oct 1984 | Juneau | Tornado | F2 | $250,000 | — | 3 |
| 8 Jun 1984 | Columbia | Tornado | F3 | $2,500,000 | — | 1 |
| 8 Jun 1984 | Dodge | Tornado | F2 | $2,500,000 | — | 1 |
| 27 Apr 1984 | Langlade | Tornado | F2 | $2,500,000 | — | 1 |
| 14 Jul 1984 | St. Croix | Thunderstorm Wind | 0 mph | — | — | 1 |
| 14 Jul 1984 | St. Croix | Thunderstorm Wind | 0 mph | — | — | 1 |
| 29 Aug 1984 | Outagamie | Thunderstorm Wind | 86 mph | — | — | 1 |
| 27 Apr 1984 | Waupaca | Tornado | F3 | $2,500,000 | — | — |
| 8 Jun 1984 | Dane | Tornado | F2 | $2,500,000 | — | — |
| 8 Jun 1984 | Columbia | Tornado | F2 | $2,500,000 | — | — |
| 8 Jun 1984 | Green Lake | Tornado | F3 | $2,500,000 | — | — |
| 10 Jul 1984 | Adams | Tornado | F2 | $2,500,000 | — | — |
| 27 Apr 1984 | Shawano | Tornado | F3 | $2,500,000 | — | — |
| 27 Apr 1984 | Menominee | Tornado | F3 | $2,500,000 | — | — |
| 24 Sep 1984 | Marathon | Tornado | F2 | $2,500,000 | — | — |
| 26 Apr 1984 | Polk | Tornado | F1 | $250,000 | — | — |
| 7 Jun 1984 | Chippewa | Tornado | F2 | $250,000 | — | — |
| 7 Jun 1984 | Clark | Tornado | F2 | $250,000 | — | — |
| 7 Jun 1984 | Lafayette | Tornado | F2 | $250,000 | — | — |
| 7 Jun 1984 | Iowa | Tornado | F2 | $250,000 | — | — |
| 7 Jun 1984 | Columbia | Tornado | F5 | $250,000 | — | — |
| 8 Jun 1984 | Columbia | Tornado | F2 | $250,000 | — | — |
| 8 Jun 1984 | Columbia | Tornado | F1 | $250,000 | — | — |
| 23 Jul 1984 | Dodge | Tornado | F1 | $250,000 | — | — |
| 27 Apr 1984 | Adams | Tornado | F1 | $250,000 | — | — |
| 27 Apr 1984 | Portage | Tornado | F2 | $250,000 | — | — |
| 16 Oct 1984 | Fond du Lac | Tornado | F1 | $250,000 | — | — |
| 26 Jun 1984 | Shawano | Tornado | F1 | $250,000 | — | — |
| 27 Apr 1984 | Wood | Tornado | F0 | $250,000 | — | — |
| 27 Apr 1984 | Washington | Tornado | F0 | $25,000 | — | — |
| 7 Jun 1984 | Price | Tornado | F1 | $25,000 | — | — |
| 10 Jul 1984 | Lafayette | Tornado | F0 | $25,000 | — | — |
| 27 Apr 1984 | Bayfield | Tornado | F0 | $25,000 | — | — |
| 26 Jun 1984 | Marathon | Tornado | F1 | $25,000 | — | — |
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 1984
| Declared | Number | Type | Incident | Title | Counties |
|---|---|---|---|---|---|
| 10 Jul 1984 | EM-3091 | Emergency | Flood | Severe Storms & Flooding | 3 |
| 12 Jun 1984 | DR-710 | Major disaster | Tornado | Severe Storms & Tornadoes | 2 |
Flood insurance claims with a 1984 date of loss
38 NFIP claims, 15 of them paid, for $53,519.
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.