Winnebago County, Wisconsin tornado history

36 tornadoes recorded in or across Winnebago County from 1956 to 2020, coloured by rating on the map.

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Years1950 to 2025
Rating (F or EF scale)

Shows tornadoes that started in, or crossed, the chosen state. To see how many have passed near you, search a town or ZIP code, or tap the map.

Key
  • F0 / EF0 Light damage
  • F1 / EF1 Moderate damage
  • F2 / EF2 Considerable damage
  • F3 / EF3 Severe damage
  • F4 / EF4 Devastating damage
  • F5 / EF5 Incredible damage
  • Unknown Not rated (2007 onwards)

How to read the lines. Each line is one tornado, drawn from where it started to where it ended, coloured and sized by its rating. A dot means the record has no end point. Tap a line for its details, or tap anywhere else to see how many tornadoes have passed nearby. Weaker tornadoes appear as you zoom in. Ratings use the Fujita (F) scale before 1 February 2007 and the Enhanced Fujita (EF) scale from then on.

Tornadoes in Winnebago County

The Storm Prediction Center records 36 tornadoes whose paths touched Winnebago County, Wisconsin between 1956 and 2020. They killed 8 people and injured 112. The busiest month is June, with 15 tornadoes. The strongest was an F4 on 3 April 1956. The most recent was on 20 June 2020.

  • 36tornadoes
  • 8deaths
  • 112injuries
  • 828per 10,000 sq mi of land

A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.

How strong were the tornadoes in Winnebago County?

RatingTornadoesShare
F0 / EF01953%
F1 / EF11233%
F2 / EF226%
F3 / EF300%
F4 / EF438%
F5 / EF500%
Unknown rating00%

Winnebago County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 12 in 2000s.1950s21960s11970s41980s41990s32000s122010s72020s3

The 2020s only run to 2020, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s2
1960s1
1970s4
1980s4
1990s3
2000s12
2010s7
2020s3
Tornadoes by month
Bar chart of tornadoes by period. The most is 15 in Jun.Jan0Feb0Mar0Apr5May8Jun15Jul3Aug4Sep1Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr5
May8
Jun15
Jul3
Aug4
Sep1
Oct0
Nov0
Dec0

Records for Winnebago County

Notable tornadoes in Winnebago County

Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.

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