Sweetwater County, Wyoming tornadoes

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26confirmed tornadoes since NOAA records began in 1950 (the first here in 1960). Most recent: July 1, 2025, EF0. 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.

The record

At a glance

Total261950 to 2025
Per year0.3average since 1950
Peak monthMay7 of 26
StrongestF1Sep 9, 1973
Deaths0whole paths, see note
Injuries0whole paths, see note

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

Seasons

When tornadoes hit here

By month

70 Jan: 0Feb: 0Mar: 0Apr: 2May: 7Jun: 6Jul: 4Aug: 4Sep: 3Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 7 of 26 tornadoes.

By time of day

60 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 3: 5: 43 PM: 6: 4: 26 PM: 1: 0: 09 PM: 0: 0: 112 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 3:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

30 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 1: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 0: 0: 1: 1: 0: 0: 0: 1: 31980: 0: 0: 1: 0: 0: 0: 0: 0: 0: 21990: 2: 1: 1: 0: 0: 1: 0: 1: 0: 02000: 1: 1: 0: 1: 0: 0: 0: 0: 0: 02010: 0: 0: 0: 1: 1: 1: 0: 1: 1: 02020: 0: 0: 0: 1: 0: 119501960197019801990200020102020

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
20
EF1
5
Unknown
1

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

F1, September 9, 1973

0.1 mile path Longest path

11.36 miles, EF0

May 26, 2017, whole path Widest

200 yards, F0

August 14, 1979
Every tornado

All 26 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jul 1, 2025EF00.79 mi25 yd00
Jun 23, 2023EFU0.09 mi30 yd00
May 28, 2018EF03.45 mi25 yd00
May 26, 2017EF011.36 mi30 yd00
Jul 7, 2015EF00.05 mi10 yd00
May 7, 2014EF00.53 mi30 yd00
Sep 15, 2013EF00.05 mi30 yd00
Jun 24, 2003F0n/an/a00
Apr 20, 2001F10.2 mi10 yd00
Apr 14, 2000F10.5 mi50 yd00
Jun 10, 1997F00.1 mi30 yd00
May 25, 1995F00.5 mi50 yd00
May 15, 1992F00.1 mi10 yd00
Sep 9, 1991F00.4 mi40 yd00
Aug 4, 1990F00.1 mi10 yd00
Jul 24, 1990F00.1 mi10 yd00
May 30, 1989F00.5 mi100 yd00
May 30, 1989F00.5 mi50 yd00
Jun 14, 1982F00.1 mi10 yd00
Aug 14, 1979F00.1 mi10 yd00
Aug 14, 1979F00.1 mi10 yd00
Aug 14, 1979F01 mi200 yd00
Jul 31, 1978F11 mi100 yd00
Jun 27, 1974F10.1 mi10 yd00
Sep 9, 1973F10.1 mi10 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 12, 2026.