Wyoming

Storm History: Sweetwater County, Wyoming

576 episodes, 864 events since 1957

Every storm the National Weather Service has filed in Sweetwater 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
864
Deaths
1
Injuries
15
Damage
$2.5 million
Episodes
576

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 Sweetwater 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
High Wind27300$106,000
Winter Storm27000$62,000
Thunderstorm Wind106011$43,000
Tornado3900$306,000
Blizzard3100
Heavy Snow2901
Hail2600$715,000
Extreme Cold/Wind Chill1400
Heat1200
Cold/Wind Chill1100
Dense Fog1100
Funnel Cloud1000
Wildfire800$261,000
Flash Flood700$1.0 million
Avalanche500
Flood400
Excessive Heat400
Dust Devil100$1,000
Lightning101
Strong Wind112
Winter Weather100

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 Sweetwater County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Sweetwater CountyEvery warning in Sweetwater 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.