Johnson County, Wyoming tornadoes

Checking live National Weather Service warnings for Johnson County...

22confirmed tornadoes since NOAA records began in 1950 (the first here in 1971). Most recent: June 19, 2019, EF1. 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 Johnson County

Loading warnings...

The record

At a glance

Total221950 to 2025
Per year0.3average since 1950
Peak monthJune14 of 22
StrongestEF2Jun 12, 2017
Deaths0whole paths, see note
Injuries2whole paths, see note

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

Seasons

When tornadoes hit here

By month

140 Jan: 0Feb: 0Mar: 0Apr: 0May: 4Jun: 14Jul: 2Aug: 2Sep: 0Oct: 0Nov: 0Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

June is the peak month, with 14 of 22 tornadoes.

By time of day

60 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 2: 1: 23 PM: 3: 6: 46 PM: 3: 1: 09 PM: 0: 0: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 4:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

50 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 1: 0: 1: 1: 0: 0: 2: 0: 51980: 0: 0: 1: 0: 0: 0: 0: 1: 0: 11990: 0: 0: 0: 1: 0: 1: 0: 0: 1: 12000: 0: 0: 0: 0: 0: 0: 0: 0: 1: 02010: 1: 0: 0: 0: 0: 0: 0: 1: 1: 12020: 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
13
EF1
7
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

Strongest

EF2, June 12, 2017

1.58 mile path Longest path

4.5 miles, F1

May 9, 1977, whole path Widest

300 yards, EF2

June 1, 2018
Every tornado

All 22 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jun 19, 2019EF14.09 mi250 yd00
Jun 1, 2018EF21.03 mi300 yd00
Jun 12, 2017EF21.58 mi250 yd00
Jun 1, 2010EF00.11 mi25 yd00
May 29, 2008EF00.14 mi10 yd00
Aug 11, 1999F10.2 min/a00
Jun 11, 1998F00.1 mi30 yd00
Jun 22, 1995F00.2 mi10 yd00
May 28, 1993F03 mi100 yd00
Jun 8, 1989F00.5 mi50 yd00
May 26, 1987F00.1 mi13 yd00
Jul 5, 1982F00.2 mi50 yd00
Jun 27, 1979F00.3 mi100 yd00
Jun 27, 1979F00.1 mi10 yd00
Jun 18, 1979F00.3 mi100 yd00
Jun 18, 1979F00.1 mi10 yd00
Jun 18, 1979F00.1 mi10 yd00
Jun 20, 1977F10.1 mi10 yd00
May 9, 1977F14.5 mi27 yd00
Aug 14, 1974F11.5 mi67 yd02
Jul 23, 1973F10.1 mi10 yd00
Jun 3, 1971F11 mi27 yd00
Nearby

Nearby counties

Coming soon

Free tornado alerts for Johnson 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.