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Tornadoes in Wyoming

Wyoming has recorded 749 tornadoes from 1950 through 2025, about 10.2 per year over the last 30 years. They killed 4 people and injured 115. June is the most active month.

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Map data: NWS, OpenFreeMap, OpenStreetMap

Tornadoes per year

96: 696697: 26972698: 16981699: 20992000: 500501: 16011602: 802803: 403404: 604605: 605606: 106107: 507508: 19081909: 11091110: 20102011: 711712: 412413: 813814: 13141315: 815816: 216217: 10171018: 23182319: 20192020: 420421: 121122: 222223: 21232124: 524525: 9259
Wyoming tornadoes per year, 1996–2025
50s: 3850s3860s: 6960s6970s: 13570s13580s: 11180s11190s: 15890s15800s: 8100s8110s: 11510s11520s: 4220s42
Tornadoes per decade (the 2020s are partial)

When tornadoes happen in Wyoming

Jan: 0JanFeb: 0FebMar: 0MarApr: 14Apr14May: 162May162Jun: 322Jun322Jul: 162Jul162Aug: 63Aug63Sep: 25Sep25Oct: 1Oct1Nov: 0NovDec: 0Dec
Tornadoes by month, 1950–2025
EF0: 438EF0438EF1: 200EF1200EF2: 62EF262EF3: 13EF313EF4: 1EF41EF5: 0EF5
Tornadoes by (E)F rating

Ratings before February 2007 use the original Fujita (F) scale; later tornadoes use the Enhanced Fujita (EF) scale. How the EF scale works.

Deadliest tornadoes in Wyoming

DateRatingCountyPath lengthWidthDeathsInjuries
August 12, 2005F2Campbell County1.5 mi450 yd213
July 16, 1979F3Laramie County8.8 mi80 yd140
June 26, 1959F2Big Horn County9.2 mi333 yd11

Strongest tornadoes in Wyoming

DateRatingCountyPath lengthWidthDeathsInjuries
July 21, 1987F4Teton County24.3 mi2,550 yd00
July 16, 1979F3Laramie County8.8 mi80 yd140
July 12, 1965F3—20.8 mi1,400 yd00
April 23, 1960F3Laramie County17.2 mi33 yd01
May 23, 1978F3Campbell County14.5 mi180 yd00
June 25, 1975F3Crook County11.5 mi440 yd00
June 6, 2018EF3Albany County11.3 mi600 yd00
July 28, 2018EF3Converse County4.4 mi350 yd00
June 1, 2018EF3Campbell County3.8 mi200 yd02
June 29, 1993F3—3 mi150 yd00

Most recent tornadoes

DateRatingCountyPath lengthWidthDeathsInjuries
October 15, 2025EF1Teton County1 mi125 yd00
July 19, 2025EF1Crook County0 mi55 yd00
July 1, 2025EF0Sweetwater County0.8 mi25 yd00
June 17, 2025?Converse County0.1 mi10 yd00
June 17, 2025?Niobrara County0.1 mi10 yd00
June 17, 2025?Niobrara County0.1 mi10 yd00
June 17, 2025EF1Albany County1.6 mi450 yd00
June 12, 2025EF1Laramie County2.2 mi10 yd00
June 11, 2025?Albany County0.1 mi10 yd00
September 9, 2024EF0Hot Springs County0.2 mi25 yd00

Counties with the most tornadoes

CountyTornadoes since 1950Per 1,000 sq mi
Laramie County124119568131
Campbell County9551239067.1
Goshen County88102389937.1
Platte County5062229697.3
Converse County4929826087
Natrona County3918912188.7
Crook County3935392431.7
Niobrara County3635506473.7
Albany County3219391670.6
Big Horn County3226420146.6
Sweetwater County266458233.4
Weston County2628081734.8
Johnson County2213716899.4
Fremont County226204268.3
Carbon County185902760.2
Sheridan County1111292112.6
Park County103732526.3
Washakie County89254131.3
Sublette County73710601.7
Lincoln County63813496.9

About this data

Tornado records come from the NOAA Storm Prediction Center database of confirmed tornadoes, 1950–2025. Tornadoes that crossed state lines are counted in the state where they began. Counts in the early decades are lower partly because many weak tornadoes went unreported before Doppler radar and storm spotter networks.