Wyoming

Storm History: Fremont County, Wyoming

1,166 episodes, 2,334 events since 1958

Every storm the National Weather Service has filed in Fremont County, Wyoming: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
2,334
Deaths
36
Injuries
50
Damage
$27 million
Episodes
1,166

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Fremont County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Winter Storm91114$806,000
High Wind48900$987,000
Thunderstorm Wind17410$146,000
Heavy Snow16602$15,000
Hail15400$39,000
Blizzard8000
Avalanche653329$15,000
Wildfire55010$2.8 million
Tornado5104$3.6 million
Flood4510$17 million
Cold/Wind Chill3600
Flash Flood3500$896,000
Extreme Cold/Wind Chill2400
Heat2100
Dense Fog800
Funnel Cloud600
Excessive Heat500
Lightning401$280,000
Debris Flow200$402,000
Winter Weather200
Heavy Rain100

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

The strongest tornadoes

Every tornado in Fremont County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Fremont CountyEvery warning in Fremont County since 1986Every county in Wyoming

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.