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Wisconsin Flood Stories

1,435 first-hand accounts of flood events in Wisconsin, ranked by impact. Each is a NOAA-written narrative of the moment.

Flood$270K damage

Trempealeau, WI · Mar 14, 2019

During the period from about March 10th through the 15th, daytime temperatures warmed well into the 40s with some locations reaching the 50s. These warm temperatures caused a rapid melt of the existing snowpack that averaged between 12 and 18 inches.

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Flood$384K damage

Oconto, WI · Dec 30, 2019

An Ice Jam and high river stages produced flooding in the city of Oconto, called the worst flooding in decades. Water surrounded many homes and some businesses and the city of Oconto declared a flood emergency.

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Flash Flood$2.4M damage

Richland, WI · Sep 22, 2016

One person was killed near Victory (Vernon County) when a house was swept down a hillside by a mudslide during the early morning hours of the 22nd.

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Flash Flood$500K damage

Sauk, WI · Aug 28, 2018

A large west to east line of thunderstorms moving east to southeast late on August 27th into the early morning hours of August 28th brought more flash flooding and river flooding to Sauk, Columbia, Marquette, Green Lake, Fond du Lac, Dodge, and Jefferson Counties.

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Flood$500K damage

Sauk, WI · Aug 28, 2018

A large west to east line of thunderstorms moving east to southeast late on August 27th into the early morning hours of August 28th brought more flash flooding and river flooding to Sauk, Columbia, Marquette, Green Lake, Fond du Lac, Dodge, and Jefferson Counties.

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Flash Flood$100K damage

Columbia, WI · Aug 27, 2020

A stalled front followed by an approaching low pressure area and cold front led to 17 to 21 hours of strong to severe thunderstorms and heavy rainfall over portions of central and southern WI.

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Lakeshore Flood$100K damage

Southern Oconto, WI · Apr 28, 2020

A strong low pressure system tracking through the southern Great Lakes caused gusty northeast winds across east-central and northeast Wisconsin, which caused some isolated damage and widespread lakeshore flooding in Brown and Oconto counties.

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Flood$450K damage

Crawford, WI · Aug 28, 2018

A line of severe thunderstorms moved across western Wisconsin during the evening of August 27th. A brief tornado touched down and had an intermittent damage path between Tomah and Wyeville (Monroe County). The damage was limited to trees and power poles.

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Flood$15K damage

Crawford, WI · Jul 1, 2024

Heavy rainfall throughout June led to many locations along the Mississippi River in Western Wisconsin to enter flood stage which persisted into July.

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Flash Flood$942K damage

Grant, WI · Jul 21, 2017

Two rounds of thunderstorms moved across southwest Wisconsin during the evening of July 21st into the early morning hours of the 22nd. Both rounds of storms produced heavy rains with totals of 4 to 8 inches estimated by radar over the southern half of Grant County.

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Flood$20K damage

Washburn, WI · Apr 12, 2022

A strong and slow moving area of low pressure moved from the Central Plains on the 12th to over Minnesota on the morning of the 14th and became occluded. A cold front pushed across northwest Wisconsin on the 13th with heavy rainfall being received in some locations.

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Flash Flood$25K damage

Grant, WI · Jul 11, 2025

During the afternoon hours on July 11th, severe storms moved through Grant County bringing a few instances of severe wind gusts between 60 and 70 mph resulting in sporadic wind damage.

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Flash Flood$1.8M damage

Clark, WI · Sep 21, 2016

One person was killed near Victory (Vernon County) when a house was swept down a hillside by a mudslide during the early morning hours of the 22nd.

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Flash Flood$375K damage

La Crosse, WI · Aug 27, 2018

A line of severe thunderstorms moved across western Wisconsin during the evening of August 27th. A brief tornado touched down and had an intermittent damage path between Tomah and Wyeville (Monroe County). The damage was limited to trees and power poles.

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Flood$170K damage

Manitowoc, WI · Mar 15, 2019

Several locations across northeast Wisconsin had snow depths around a foot or more above normal for late February and early March. Temperatures across central and northern Wisconsin warmed above freezing during the daytime hours starting around March 8th.

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Flash Flood$336K damage

Richland, WI · Sep 3, 2018

Thunderstorms with heavy rain moved across western Wisconsin during the evening of September 3rd. Rainfall amounts of 2 to 5 inches produced some flash flooding across portions of Monroe, Vernon, Crawford and Richland Counties.

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Lakeshore Flood$65K damage

Ozaukee, WI · Jan 11, 2020

Strong low pressure passing by to the southeast resulted in an extended period of strong north to northeast winds along the Lake Michigan shoreline of southeast and east central Wisconsin.

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Flood$300K damage

Calumet, WI · May 3, 2018

Multiple rainfall events during the early days of May caused flooding in Calumet County and Manitowoc County. Water began to over-top Shoto Dam on the West Twin River in Manitowoc County and there was some concern that the dam could fail.

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Flood

Milwaukee, WI · May 7, 2024

A few rounds of strong to severe thunderstorms moved along a stationary front that was draped across southern WI. Two tornadoes occurred with the second line of storms in the early afternoon.

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Flash Flood$285K damage

Monroe, WI · Sep 3, 2018

Thunderstorms with heavy rain moved across western Wisconsin during the evening of September 3rd. Rainfall amounts of 2 to 5 inches produced some flash flooding across portions of Monroe, Vernon, Crawford and Richland Counties.

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Flash Flood$400K damage

Jefferson, WI · Jun 17, 1996

Heavy rains of 3 to perhaps 6 inches in the pre-dawn hours resulted in flash flooding on the southwest side of Watertown. A 40 foot section of an earthen embankment washed out, leaving railroad tracks suspended in the air.

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Flood$121K damage

Kewaunee, WI · Mar 14, 2019

Several locations across northeast Wisconsin had snow depths around a foot or more above normal for late February and early March. Temperatures across central and northern Wisconsin warmed above freezing during the daytime hours starting around March 8th.

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Flash Flood$25K damage

Vernon, WI · Aug 7, 2021

Several rounds of storms moved across western Wisconsin during the afternoon of August 7th. One of these storms produced an EF3 tornado that started in Boscobel (Grant County) and traveled east/southeast before dissipating south of Blue River (Grant County).

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Flash Flood$25K damage

La Crosse, WI · Aug 7, 2021

Several rounds of storms moved across western Wisconsin during the afternoon of August 7th. One of these storms produced an EF3 tornado that started in Boscobel (Grant County) and traveled east/southeast before dissipating south of Blue River (Grant County).

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