Idaho

Storm History: Ada County, Idaho

220 episodes, 308 events since 1956

Every storm the National Weather Service has filed in Ada 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
308
Deaths
1
Injuries
85
Damage
$12 million
Episodes
220

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 Ada 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 Wind7806$5,000
Hail5801$510,000
Heavy Snow5107
Flash Flood2900$2.1 million
High Wind2000$102,000
Flood1900$4.0 million
Tornado1800$50,000
Wildfire11170$5.6 million
Heavy Rain500
Winter Storm500
Dense Fog401
Blizzard300
Funnel Cloud200
Debris Flow200
Lightning100
Extreme Cold/Wind Chill100
Strong Wind100

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 Ada CountyEvery warning in Ada 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.