Tornado History Map

Yellowstone County, Montana tornado history

22 tornadoes recorded in or across Yellowstone County from 1955 to 2016, 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 Yellowstone County

The Storm Prediction Center records 22 tornadoes whose paths touched Yellowstone County, Montana between 1955 and 2016. None of them is recorded as having killed anyone. The busiest month is June, with 10 tornadoes. The strongest was an F3 on 16 June 1965. The most recent was on 21 May 2016.

  • 22tornadoes
  • 0deaths
  • 3injuries
  • 84per 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 Yellowstone County?

RatingTornadoesShare
F0 / EF01464%
F1 / EF1523%
F2 / EF229%
F3 / EF315%
F4 / EF400%
F5 / EF500%
Unknown rating00%

Yellowstone County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 7 in 1990s.1950s31960s21970s41990s72000s22010s4

The 2010s only run to 2016, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s3
1960s2
1970s4
1990s7
2000s2
2010s4
Tornadoes by month
Bar chart of tornadoes by period. The most is 10 in Jun.Jan0Feb0Mar0Apr0May2Jun10Jul7Aug3Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May2
Jun10
Jul7
Aug3
Sep0
Oct0
Nov0
Dec0

Records for Yellowstone County

  • Strongest and Longest path: Montana tornado16 June 1965, F3, 20.6 miles long
  • Most recent: Montana tornado21 May 2016, EF1, 2 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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