McCone County, Montana tornadoes

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9confirmed tornadoes since NOAA records began in 1950 (the first here in 1954). Most recent: June 16, 2010, EF1. 2026 so far: 0 preliminary reports preliminary

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Map

Every tornado path in the county

Tornado paths, 1950 to 2025
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(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5Unrated

Each path is a straight line from where the tornado started to where it ended, which is all most NOAA records hold. Tap a path for its details.

Recent warnings

Recent warnings in McCone County

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The record

At a glance

Total91950 to 2025
Per year0.1average since 1950
Peak monthJuly3 of 9
StrongestF2Aug 26, 1954
Deaths1whole paths, see note
Injuries1whole paths, see note

Deaths and injuries are NOAA's totals for each tornado's whole path, which can extend beyond McCone County.

Seasons

When tornadoes hit here

By month

30 Jan: 0Feb: 0Mar: 0Apr: 0May: 2Jun: 2Jul: 3Aug: 2Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

July is the peak month, with 3 of 9 tornadoes.

By time of day

30 12 AM: 0: 0: 03 AM: 1: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 0: 03 PM: 0: 0: 26 PM: 1: 3: 29 PM: 0: 0: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 7:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

20 1950: 0: 0: 0: 0: 1: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01980: 0: 0: 0: 1: 0: 0: 0: 0: 0: 01990: 0: 1: 0: 1: 0: 2: 0: 0: 0: 02000: 0: 1: 0: 0: 0: 0: 0: 0: 0: 02010: 2: 0: 0: 0: 0: 0: 0: 0: 0: 02020: 0: 0: 0: 0: 0: 019501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones.

By rating

EF0
5
EF1
2
EF2
2

Ratings before February 2007 use the original F scale; the numbers line up with today's EF scale. Unknown means NOAA could not assign a rating.

The record

Notable tornadoes

Deadliest

F1, July 9, 1983

1 deaths, 1 injuries Strongest

F2, August 26, 1954

20.9 mile path Longest path

28 miles, F0

July 20, 2001, whole path Widest

880 yards, F2

August 26, 1954
Every tornado

All 9 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 16, 2010EF12.61 mi16 yd00
May 27, 2010EF00.1 mi1 yd00
Jul 20, 2001F028 mi75 yd00
Jul 11, 1995F20.5 mi80 yd00
Jun 21, 1995F00.1 mi10 yd00
Aug 13, 1993F00.1 mi10 yd00
May 10, 1991F00.2 mi10 yd00
Jul 9, 1983F11 mi500 yd11
Aug 26, 1954F220.9 mi880 yd00
Nearby

Nearby counties

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025, and SPC preliminary reports for 2026. Page built October 13, 2026.