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Wyoming · County tornado history

Campbell County, Wyoming tornadoes

NOAA’s Storm Prediction Center has recorded 95 tornadoes in Campbell County, Wyoming from 1950 through 2024, about 1.3 a year. That ranks it 2 of 23 counties in Wyoming with a recorded tornado. The most recent was an EF2 on June 23, 2023.

By Twisters.us · Updated · How we count

Tornadoes since 1950
95
Since 2000
30
Strongest
EF3, June 1, 2018
Most recent
EF2, June 23, 2023
Peak month
June (47)
Per 1,000 sq mi
20
FEMA tornado risk
Relatively Low

F0/EF0 1 2 3 4 5 · Lines run from where each tornado touched down to where it lifted; dots are short paths. Neighboring counties are outlined.

When tornadoes hit Campbell County

June has brought the most, 47 of 95. About 75% touched down between 3 pm and 9 pm (Central Standard Time, as the Storm Prediction Center records it).

By decade

More tornadoes in recent decades mostly reflects better detection and reporting (Doppler radar, storm spotters, damage surveys), especially for weak EF0 tornadoes, not necessarily more storms. The 2020s bar covers only 2020 to 2024.

How strong they were

Rating Estimated 3-second gust Tornadoes
F0 / EF0 Light damage: 65 to 85 mph (EF scale) 60
F1 / EF1 Moderate: 86 to 110 mph 24
F2 / EF2 Considerable: 111 to 135 mph 9
F3 / EF3 Severe: 136 to 165 mph 2
F4 / EF4 Devastating: 166 to 200 mph 0
F5 / EF5 Incredible: over 200 mph 0

Tornadoes before February 2007 were rated on the original Fujita (F) scale; since then the National Weather Service uses the Enhanced Fujita (EF) scale. Wind speeds above are EF-scale estimates from damage, not measurements. See what the EF scale means.

The strongest tornadoes in Campbell County

Date Rating Path length Path width Deaths Injuries
June 1, 2018 EF3 3.8 mi 200 yd 2
May 23, 1978 F3 14.5 mi 180 yd
August 12, 2005 F2 1.5 mi 450 yd 2 13
June 23, 2023 EF2 3.8 mi 800 yd 8
July 22, 1966 F2 3.6 mi 67 yd 6
June 11, 1962 F2 52 mi 100 yd 4
May 6, 1988 F2 1.5 mi 50 yd 2
June 25, 1975 F2 16.3 mi 67 yd 1
June 12, 1953 F2 2 mi 33 yd
May 27, 1959 F2 10.6 mi 33 yd

Deaths and injuries are for each tornado’s whole path, which can cross other counties.

The deadliest

The deadliest tornado to touch Campbell County was an F2 on August 12, 2005. It killed 2 people and injured 13 along its 1.5-mile path.

Most recent tornadoes

Date Rating Path length Path width Deaths Injuries
June 23, 2023 EF2 3.8 mi 800 yd 8
July 16, 2019 EF0 1.2 mi 10 yd
June 1, 2018 EF1 4.6 mi 50 yd
June 1, 2018 EF1 0.5 mi 25 yd
June 1, 2018 EF3 3.8 mi 200 yd 2
June 1, 2018 EF0 1 mi 25 yd
August 7, 2016 EF1 1.5 mi 365 yd
June 3, 2015 EF0 0 mi 10 yd

The official database ends with 2024. For storms since then, see the Storm Prediction Center’s reports and your local National Weather Service office.

FEMA’s tornado risk rating

FEMA’s National Risk Index rates the tornado risk in Campbell County as relatively low, with a score of 46 out of 100 compared with every other U.S. county. It estimates about 0.82 tornadoes a year here and an expected annual loss of about $1,459,873 to buildings, people and farming. The index mixes how often tornadoes strike with what is exposed and how well a community can recover, so a busy rural county can rate lower than a less active city.

Neighboring counties

Staying safe

When a tornado warning is issued, act at once. Go to a basement, storm shelter or safe room. With none, use a small windowless room on the lowest floor, as far from outside walls as you can, and cover your head and neck. Mobile homes and cars are not safe places to ride out a tornado: leave early for a sturdy building or shelter. Read the full tornado safety guide and the National Weather Service advice linked below.

Sources

Sources last checked 1 November 2026.

Frequently asked questions

How many tornadoes has Campbell County had?

95 from 1950 through 2024 in NOAA’s Storm Prediction Center database, 30 of them since 2000.

When was the last tornado in Campbell County?

The most recent in the official record was an EF2 on June 23, 2023. Later storms are not yet in the final database.

What was the strongest tornado in Campbell County?

An EF3 on June 1, 2018, with a 3.8-mile path.

When is tornado season in Campbell County?

June has had the most tornadoes here. Across the U.S. the peak runs from spring into early summer, and the South also sees tornadoes in late fall and winter.