Idaho

Storm History: Boise County, Idaho

216 episodes, 254 events since 1961

Every storm the National Weather Service has filed in Boise 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
254
Deaths
3
Injuries
6
Damage
$8.3 million
Episodes
216

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 Boise 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
Heavy Snow12300
Flash Flood3000$1,000
Hail2100
Winter Storm1500
Thunderstorm Wind1405
High Wind1100
Heavy Rain1000
Tornado701$150,000
Flood700$8.1 million
Debris Flow600
Blizzard400
Wildfire210
Avalanche220
Strong Wind200$10,000

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

More

Tornadoes in Boise CountyEvery warning in Boise 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.