Idaho

Storm History: Jefferson County, Idaho

295 episodes, 456 events since 1964

Every storm the National Weather Service has filed in Jefferson County, Idaho: 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
456
Deaths
5
Injuries
4
Damage
$9.8 million
Episodes
295

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 Jefferson 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
Thunderstorm Wind15400$1.2 million
High Wind7300$921,000
Winter Storm5400$134,000
Hail4501$27,000
Tornado3000$252,000
Heavy Snow1911$50,000
Wildfire1400
Winter Weather1322$25,000
Flood1100$3.1 million
Dust Storm1100
Extreme Cold/Wind Chill900
Flash Flood800$15,000
Avalanche400
Blizzard300$2,000
Dense Fog200$13,000
Heat200
Heavy Rain100$4.0 million
Cold/Wind Chill110
Excessive Heat100
Freezing Fog110

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.

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Jefferson CountyEvery warning in Jefferson County since 1986Every county in Idaho

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.