Wisconsin, 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 1,387 against 1,345 in 2017.
Counties with the most recorded events
Notable events
| Date | County | Event type | Magnitude | Property damage | Deaths | Injuries |
|---|---|---|---|---|---|---|
| 3 Feb 2018 | Fond du Lac | Winter Weather | — | — | 4 | — |
| 12 Feb 2018 | Dane | Dense Fog | — | — | 1 | 6 |
| 14 Apr 2018 | Columbia | Winter Weather | — | — | 1 | 5 |
| 17 Jun 2018 | Sawyer | Thunderstorm Wind | 58 mph | — | 1 | 3 |
| 26 Mar 2018 | Iron | Winter Weather | — | — | 1 | 2 |
| 3 Feb 2018 | Vernon | Winter Weather | — | $20,000 | 1 | 1 |
| 20 Oct 2018 | Racine | Strong Wind | 51 mph | $20,000 | 1 | 1 |
| 1 Jan 2018 | Barron | Extreme Cold/Wind Chill | — | — | 1 | 1 |
| 20 Aug 2018 | Dane | Flash Flood | — | $1,000,000 | 1 | — |
| 28 Mar 2018 | Jackson | Dense Fog | — | $40,000 | 1 | — |
| 20 Oct 2018 | Green Lake | Strong Wind | 45 mph | $1,000 | 1 | — |
| 3 Feb 2018 | Sauk | Winter Weather | — | — | 1 | — |
| 29 Nov 2018 | Milwaukee | Cold/Wind Chill | — | — | 1 | — |
| 17 Jan 2018 | Rock | Cold/Wind Chill | — | — | 1 | — |
| 1 Jan 2018 | Fond du Lac | Cold/Wind Chill | — | — | 1 | — |
| 1 Jan 2018 | Dane | Cold/Wind Chill | — | — | 1 | — |
| 10 Jan 2018 | Waukesha | Winter Weather | — | — | 1 | — |
| 5 Feb 2018 | Racine | Cold/Wind Chill | — | — | 1 | — |
| 2 Jan 2018 | Brown | Cold/Wind Chill | — | — | 1 | — |
| 2 Jan 2018 | Florence | Cold/Wind Chill | — | — | 1 | — |
| 1 Jan 2018 | Milwaukee | Cold/Wind Chill | — | — | 1 | — |
| 17 Jun 2018 | Ashland | Flash Flood | — | — | 1 | — |
| 28 Dec 2018 | Milwaukee | Cold/Wind Chill | — | — | 1 | — |
| 3 Aug 2018 | Waukesha | Dense Fog | — | — | 1 | — |
| 20 Aug 2018 | Dane | Flood | — | $32,800,000 | — | — |
| 30 Jun 2018 | Ashland | Lightning | — | — | — | 3 |
| 28 Aug 2018 | Juneau | Flash Flood | — | $28,700,000 | — | — |
| 27 Aug 2018 | Vernon | Flash Flood | — | $28,300,000 | — | — |
| 28 Aug 2018 | Monroe | Flash Flood | — | $26,500,000 | — | — |
| 20 Aug 2018 | Dane | Lightning | — | — | — | 2 |
| 13 Jul 2018 | Lafayette | Thunderstorm Wind | 81 mph | $200,000 | — | 1 |
| 18 Apr 2018 | Monroe | Heavy Snow | — | $10,000 | — | 1 |
| 19 Jul 2018 | Kenosha | Lightning | — | — | — | 1 |
| 28 Aug 2018 | Crawford | Flood | — | $8,500,000 | — | — |
| 28 Aug 2018 | Fond du Lac | Thunderstorm Wind | 110 mph | $7,600,000 | — | — |
| 28 Aug 2018 | Vernon | Flood | — | $6,500,000 | — | — |
| 28 Aug 2018 | Adams | Thunderstorm Wind | 81 mph | $6,000,000 | — | — |
| 29 Aug 2018 | Sauk | Flood | — | $4,900,000 | — | — |
| 28 Aug 2018 | Vernon | Flood | — | $4,500,000 | — | — |
| 28 Aug 2018 | Marquette | Thunderstorm Wind | 100 mph | $300,000 | — | — |
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 |
|---|---|---|---|---|---|
| 18 Oct 2018 | DR-4402 | Major disaster | Flood | Severe Storms, Tornadoes, Straight-Line Winds, Flooding, And Landslides | 14 |
| 10 Aug 2018 | DR-4383 | Major disaster | Flood | Severe Storms, Straight-Line Winds, And Flooding | 6 |
Flood insurance claims with a 2018 date of loss
447 NFIP claims, 392 of them paid, for $19,834,144.
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.