Elmore County, Idaho: hazard risk

FEMA rates Elmore County's overall risk Relatively Low (score 52.0 of 100, higher than 51% of rated U.S. counties); 2 of its 15 hazards are rated Relatively High or Very High, led by wildfire, avalanche. Its storm record holds 427 events since 1950.

FEMA's rating for each hazard

These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.

FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).

National Risk Index (December 2025), Elmore County, by FEMA's rating, then score
HazardRisk ratingScoreExpected annual loss
WildfireRelatively High97.6$13M
AvalancheRelatively High90.8$2.3M
Winter WeatherRelatively Moderate69.6$163K
LandslideRelatively Low80.3$20K
Heat WaveRelatively Low58.7$704K
Strong WindRelatively Low49.1$688K
Ice StormRelatively Low30.4$42K
EarthquakeVery Low42.0$218K
Volcanic ActivityVery Low39.7$7
Riverine FloodingVery Low30.1$4.5M
LightningVery Low22.0$97K
DroughtVery Low18.0$3K
HailVery Low17.8$80K
Cold WaveVery Low12.2$140K
TornadoVery Low7.1$44K

Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.

What the record holds

Storm records by hazard, with the county's rank by days with a record per 1,000 sq mi over each hazard's complete period
HazardRecordsDeathsDamageRank in stateRank in U.S.
Winter storms2370–36th of 442217th of 3,077
Severe thunderstorm wind573$1.1M30th of 442789th of 3,080
High wind and dust storms440$154K36th of 442337th of 3,080
Heavy rain270$9K8th of 441358th of 3,080
Floods200$293K32nd of 442855th of 3,080
Hail180–37th of 442900th of 3,080
Wildfires81$7.7M31st of 44764th of 2,972
Tornadoes50$67K33rd of 442850th of 3,080
Landslides and avalanches34–25th of 44343rd of 2,278
Extreme cold20–38th of 442825th of 3,076

Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.

The full Elmore County record: every hazard by year and month, the deadliest events and FEMA's declarations.

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