Valley County, Montana tornado history

44 tornadoes recorded in or across Valley County from 1954 to 2024, 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 Valley County

The Storm Prediction Center records 44 tornadoes whose paths touched Valley County, Montana between 1954 and 2024. None of them is recorded as having killed anyone. The busiest month is July, with 22 tornadoes. The strongest was an F2 on 4 August 1962. The most recent was on 12 July 2024.

  • 44tornadoes
  • 0deaths
  • 0injuries
  • 89per 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 Valley County?

RatingTornadoesShare
F0 / EF03170%
F1 / EF1716%
F2 / EF2511%
F3 / EF300%
F4 / EF400%
F5 / EF500%
Unknown rating12%

Valley County tornadoes over time

Tornadoes by decade
Bar chart of tornadoes by period. The most is 11 in 2000s.1950s21960s11970s71980s71990s82000s112010s22020s6

The 2020s only run to 2024, so that bar is for a shorter period. The record starts in 1950.

Show the numbers
PeriodCount
1950s2
1960s1
1970s7
1980s7
1990s8
2000s11
2010s2
2020s6
Tornadoes by month
Bar chart of tornadoes by period. The most is 22 in Jul.Jan0Feb0Mar0Apr0May1Jun14Jul22Aug7Sep0Oct0Nov0Dec0
Show the numbers
PeriodCount
Jan0
Feb0
Mar0
Apr0
May1
Jun14
Jul22
Aug7
Sep0
Oct0
Nov0
Dec0

Records for Valley County

  • Strongest and Longest path: Montana tornado4 August 1962, F2, 42.9 miles long
  • Most recent: Montana tornado12 July 2024, EF0, 3 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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