Walworth County, Wisconsin tornadoes

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41confirmed tornadoes since NOAA records began in 1950 (the first here in 1955). Most recent: June 22, 2024, EF1. 2026 so far: 5 preliminary reports preliminary

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Map

Every tornado path in the county

Tornado paths, 1950 to 2025
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(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5Unrated

Each path is a straight line from where the tornado started to where it ended, which is all most NOAA records hold. Tap a path for its details.

The record

At a glance

Total411950 to 2025
Per year0.5average since 1950
Peak monthJune10 of 41
StrongestEF3Jan 7, 2008
Deaths0whole paths, see note
Injuries20whole paths, see note

Deaths and injuries are NOAA's totals for each tornado's whole path, which can extend beyond Walworth County.

Seasons

When tornadoes hit here

By month

100 Jan: 1Feb: 0Mar: 6Apr: 5May: 4Jun: 10Jul: 6Aug: 4Sep: 3Oct: 1Nov: 1Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 10 of 41 tornadoes.

By time of day

120 12 AM: 1: 0: 03 AM: 0: 0: 16 AM: 0: 0: 09 AM: 0: 0: 112 PM: 1: 6: 23 PM: 5: 5: 36 PM: 2: 12: 19 PM: 1: 0: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 7:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

70 1950: 0: 0: 0: 0: 0: 1: 0: 1: 0: 11960: 0: 1: 0: 0: 0: 2: 1: 1: 1: 01970: 1: 0: 2: 0: 0: 0: 0: 0: 2: 01980: 1: 0: 0: 0: 0: 0: 0: 0: 1: 01990: 1: 1: 1: 2: 0: 0: 0: 1: 0: 02000: 0: 0: 0: 0: 1: 0: 0: 0: 1: 02010: 1: 0: 0: 0: 0: 2: 0: 0: 1: 02020: 1: 0: 1: 7: 4: 019501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones. This year so far: 5 preliminary reports.

By rating

EF0
15
EF1
18
EF2
6
EF3
1
Unknown
1

Ratings before February 2007 use the original F scale; the numbers line up with today's EF scale. Unknown means NOAA could not assign a rating.

The record

Notable tornadoes

Strongest

EF3, January 7, 2008

10.78 mile path Longest path

33.1 miles, F2

March 21, 1966, whole path Widest

300 yards, EF1

March 31, 2023
Every tornado

All 41 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 22, 2024EF15.26 mi100 yd00
Jun 22, 2024EF16.01 mi150 yd00
May 7, 2024EF10.98 mi50 yd00
May 7, 2024EF014.33 mi50 yd00
Jun 1, 2023EFU0.01 mi10 yd00
Apr 5, 2023EF00.54 mi75 yd00
Mar 31, 2023EF06.04 mi150 yd00
Mar 31, 2023EF05.39 mi50 yd00
Mar 31, 2023EF07 mi50 yd00
Mar 31, 2023EF010.62 mi100 yd00
Mar 31, 2023EF117.32 mi300 yd00
Oct 12, 2022EF02.43 mi40 yd00
Aug 10, 2020EF03.29 mi50 yd00
Aug 20, 2018EF00.7 mi150 yd00
Aug 18, 2015EF14.93 mi75 yd00
Jul 18, 2015EF14.94 mi50 yd00
Nov 22, 2010EF15.47 mi100 yd00
Jan 7, 2008EF310.78 mi200 yd015
Jun 23, 2004F17.8 mi150 yd00
Jul 18, 1997F00.1 mi50 yd00
Jul 5, 1993F10.5 mi73 yd00
Jun 26, 1993F05 mi73 yd00
Sep 2, 1992F10.5 mi23 yd00
Jul 7, 1991F00.1 mi23 yd00
Jun 2, 1990F10.2 mi50 yd00
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Apr 15, 20264 N DelavanNot yet rated
Apr 17, 20265 WNW BurlingtonNot yet rated
Apr 17, 20263 WNW DelavanNot yet rated
Apr 17, 20263 NNW DarienNot yet rated
Apr 14, 20265 SW East TroyNot yet rated

Preliminary reports from the Storm Prediction Center. One tornado can be reported more than once, and NOAA confirms the final record months later.

Nearby

Nearby counties

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025, and SPC preliminary reports for 2026. Page built October 12, 2026.