Tornado History Map

Chouteau County, Montana tornado history

18 tornadoes recorded in or across Chouteau County from 1958 to 2018, 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 Chouteau County

The Storm Prediction Center records 18 tornadoes whose paths touched Chouteau County, Montana between 1958 and 2018. None of them is recorded as having killed anyone. The busiest month is June, with 9 tornadoes. The strongest was an F3 on 5 July 1988. The most recent was on 23 June 2018.

  • 18tornadoes
  • 0deaths
  • 7injuries
  • 45per 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 Chouteau County?

RatingTornadoesShare
F0 / EF01161%
F1 / EF1422%
F2 / EF200%
F3 / EF3317%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Chouteau County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 6 in 1990s.1950s11960s31970s11980s51990s62010s2

The 2010s only run to 2018, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s1
1960s3
1970s1
1980s5
1990s6
2010s2
Tornadoes by month
Bar chart of tornadoes by period. The most is 9 in Jun.Jan0Feb0Mar0Apr0May0Jun9Jul8Aug1Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May0
Jun9
Jul8
Aug1
Sep0
Oct0
Nov0
Dec0

Records for Chouteau County

  • Strongest and Longest path: Montana tornado5 July 1988, F3, 12 miles long
  • Most recent: Montana tornado23 June 2018, EF0, 1.4 miles long

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

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