Wisconsin tornadoes

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1,618 confirmed tornadoes since 1950. Most recent: September 22, 2025, EF0. 2026 so far: 52 preliminary reports preliminary

Counties with the most tornadoes

CountyTornadoes since 1950Per 1,000 sq mi
Dane County7865
Dodge County6878
Marathon County6341
Grant County6254
Fond du Lac County5881
Jefferson County5090
Clark County4436
Barron County4350
Walworth County4174
Green Lake County40114
Chippewa County3939
Columbia County3951
Waukesha County3971
Lafayette County3860
Outagamie County3656

When tornadoes hit here

By month

4560 Jan: 3Feb: 2Mar: 32Apr: 115May: 251Jun: 456Jul: 368Aug: 232Sep: 107Oct: 31Nov: 6Dec: 15JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 456 of 1618 tornadoes.

By time of day

2170 12 AM: 28: 15: 103 AM: 6: 7: 56 AM: 6: 8: 109 AM: 14: 30: 2912 PM: 35: 88: 1533 PM: 168: 217: 1956 PM: 204: 151: 979 PM: 61: 31: 5012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 4:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

630 1950: 5: 5: 1: 3: 12: 9: 6: 12: 17: 301960: 11: 9: 9: 10: 33: 22: 22: 30: 20: 271970: 28: 30: 23: 17: 15: 8: 12: 15: 12: 301980: 43: 21: 16: 31: 34: 16: 14: 16: 35: 171990: 9: 10: 26: 37: 36: 7: 21: 14: 24: 112000: 18: 12: 26: 14: 36: 63: 13: 18: 39: 162010: 48: 40: 4: 16: 22: 17: 16: 23: 33: 292020: 20: 41: 28: 21: 45: 3919501960197019801990200020102020

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: 52 preliminary reports.

By rating

EF0
602
EF1
651
EF2
281
EF3
58
EF4
18
EF5
3
Unknown
5

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.

Notable tornadoes

Deadliest

F5, June 4, 1958

21 deaths Longest path

162 miles, F4

May 10, 1953

Most recent tornadoes

DateRatingPath lengthWidthDeathsInjuries
Sep 22, 2025EF00.75 mi40 yd00
Aug 9, 2025EF00.25 mi32 yd00
Jul 23, 2025EF02.37 mi65 yd00
Jul 23, 2025EF12.33 mi65 yd00
Jul 23, 2025EFU1.32 mi80 yd00
Jul 23, 2025EF17.43 mi90 yd00
Jul 23, 2025EF05.69 mi45 yd00
Jul 19, 2025EF01.58 mi60 yd00
Jul 16, 2025EF03.04 mi50 yd00
Jul 16, 2025EF00.09 mi30 yd00
Jul 16, 2025EF00.24 mi15 yd00
Jul 16, 2025EF05.59 mi100 yd00
Jul 16, 2025EF16.84 mi150 yd00
Jun 26, 2025EF00.65 mi75 yd00
Jun 25, 2025EF00.63 mi30 yd00
Jun 25, 2025EF01.07 mi60 yd00
Jun 25, 2025EF15.11 mi130 yd00
May 15, 2025EF11.5 mi50 yd00
May 15, 2025EF12.1 mi50 yd00
May 15, 2025EF28.28 mi300 yd00

Every Wisconsin county

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025. A tornado that crossed a state line counts in each state it touched.