Powder River County, Montana tornadoes

Checking live National Weather Service warnings for Powder River County...

18confirmed tornadoes since NOAA records began in 1950 (the first here in 1954). Most recent: May 18, 2014, EF0. 2026 so far: 0 preliminary reports preliminary

Join the free alerts waiting list
Map

Every tornado path in the county

Tornado paths, 1950 to 2025
Use two fingers to move the map
(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 Powder River County

Loading warnings...

The record

At a glance

Total181950 to 2025
Per year0.2average since 1950
Peak monthJune7 of 18
StrongestF2May 27, 1954
Deaths0whole paths, see note
Injuries1whole paths, see note

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

Seasons

When tornadoes hit here

By month

70 Jan: 0Feb: 0Mar: 0Apr: 1May: 4Jun: 7Jul: 5Aug: 1Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 7 of 18 tornadoes.

By time of day

60 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 0: 0: 13 PM: 1: 1: 56 PM: 2: 6: 19 PM: 0: 0: 112 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: 2: 0: 1: 0: 0: 01970: 0: 1: 0: 0: 0: 0: 0: 0: 0: 01980: 0: 0: 0: 0: 2: 1: 0: 0: 0: 01990: 1: 0: 1: 0: 0: 0: 1: 0: 0: 02000: 2: 0: 0: 0: 0: 1: 0: 0: 0: 02010: 2: 0: 0: 1: 1: 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
8
EF1
6
EF2
4

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

Strongest

F2, May 27, 1954

0.1 mile path Longest path

6 miles, F2

April 25, 1964, whole path Widest

200 yards, EF1

June 21, 2010
Every tornado

All 18 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
May 18, 2014EF00.1 mi25 yd00
Aug 3, 2013EF01 mi100 yd00
Jun 21, 2010EF20.5 mi100 yd00
Jun 21, 2010EF11 mi200 yd00
Jun 7, 2005F01 mi30 yd00
Jul 5, 2000F00.5 mi50 yd00
Jul 5, 2000F00.5 mi50 yd00
Jun 28, 1996F10.5 mi10 yd00
Jul 23, 1992F00.1 mi10 yd00
May 24, 1990F10.2 mi10 yd00
May 30, 1985F00.1 mi10 yd00
Jun 21, 1984F00.1 mi20 yd00
Jun 13, 1984F11 mi50 yd00
Jun 3, 1971F15 mi50 yd00
Jul 25, 1966F22 mi17 yd00
Jul 18, 1964F10.1 mi10 yd00
Apr 25, 1964F26 mi40 yd01
May 27, 1954F20.1 mi23 yd00
Nearby

Nearby counties

Coming soon

Free tornado alerts for Powder River County

We are building free email alerts for tornado warnings. Join the waiting list and we will email you once when they are ready. Until then, please rely on the National Weather Service and your phone's emergency alerts.

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