Tornado History Map

Bremer County, Iowa tornado history

31 tornadoes recorded in or across Bremer County from 1961 to 2021, 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 Bremer County

The Storm Prediction Center records 31 tornadoes whose paths touched Bremer County, Iowa between 1961 and 2021. None of them is recorded as having killed anyone. The busiest month is June, with 9 tornadoes. The strongest was an F4 on 1 September 1961. The most recent was on 14 July 2021.

  • 31tornadoes
  • 0deaths
  • 7injuries
  • 712per 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 Bremer County?

RatingTornadoesShare
F0 / EF01135%
F1 / EF1929%
F2 / EF2929%
F3 / EF313%
F4 / EF413%
F5 / EF500%
Unknown rating00%

Bremer County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 8 in 1970s.1960s61970s81980s51990s32000s22010s52020s2

The 2020s only run to 2021, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1960s6
1970s8
1980s5
1990s3
2000s2
2010s5
2020s2
Tornadoes by month
Bar chart of tornadoes by period. The most is 9 in Jun.Jan0Feb0Mar0Apr2May4Jun9Jul6Aug2Sep4Oct1Nov3Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr2
May4
Jun9
Jul6
Aug2
Sep4
Oct1
Nov3
Dec0

Records for Bremer County

  • Strongest: Dumont, Iowa tornado1 September 1961, F4, 7 injuries, 26.6 miles long
  • Longest path: Iowa tornado9 November 1975, F3, 39.4 miles long
  • Most recent: Iowa tornado14 July 2021, EF0, 2.5 miles long

Notable tornadoes in Bremer County

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

More in Iowa

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