Johnson County tornado history

21 tornadoes touched Johnson County, Wyoming between 1950 and 2025 — about 0.3 a year. The strongest was rated EF2 (Jun 12, 2017).

21tornadoes since 1950
EF2strongest rating
0killed · 2 injured
4.5 milongest path · 1977
(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5· dots = start point only

By rating

(E)F012
(E)F17
(E)F22
(E)F30
(E)F40
(E)F50

By month

JFMAMJJASOND

Peak month: June.

By decade

’50’60’70’80’90’00’10’20

Strongest tornadoes

DateRatingPathWidthInjuredKilled
Jun 12, 2017EF21.6 mi250 yd00
Jun 1, 2018EF21 mi300 yd00
May 9, 1977F14.5 mi27 yd00
Jun 19, 2019EF14.1 mi250 yd00
Aug 14, 1974F11.5 mi67 yd20
Jun 3, 1971F11 mi27 yd00
Aug 11, 1999F10.2 mi—00
Jul 23, 1973F10.1 mi10 yd00
Jun 20, 1977F10.1 mi10 yd00
May 28, 1993F03 mi100 yd00
Jun 8, 1989F00.5 mi50 yd00
Jun 18, 1979F00.3 mi100 yd00

Most recent tornadoes

DateRatingPathWidthInjuredKilled
Jun 19, 2019EF14.1 mi250 yd00
Jun 1, 2018EF21 mi300 yd00
Jun 12, 2017EF21.6 mi250 yd00
Jun 1, 2010EF00.1 mi25 yd00
May 29, 2008EF00.1 mi10 yd00
Aug 11, 1999F10.2 mi—00
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

Nearby counties

Sheridan County, WY10Campbell County, WY91Washakie County, WY8Natrona County, WY39Big Horn County, WY32Converse County, WY49Hot Springs County, WY6Weston County, WY28

Questions

How many tornadoes has Johnson County, Wyoming had?

21 tornadoes touched Johnson County, Wyoming between 1950 and 2025 in the NOAA Storm Prediction Center database — about 0.3 per year.

What was the strongest tornado in Johnson County?

The strongest rating recorded was EF2 on Jun 12, 2017, with a 1.6-mile path.

When is tornado season in Johnson County?

Most of its tornadoes happened in June (13 of 21). Tornadoes can occur in any month, so keep alerts on year-round.

Right now: live tornado warnings map · alerts for your location. Dates link to that day’s full storm reports where available (2004 onward).