Natural hazards · Twin Falls

Twin Falls, ID natural hazards

Most of the natural-hazard damage FEMA expects in Twin Falls comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 11 claims here since 1979.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Twin Falls?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Twin Falls to be higher than in 2% of U.S. communities, mostly from inland flooding and heat waves.

Inland flooding51%Heat waves15%Earthquakes13%Winter weather6%Cold waves5%Everything else9%

By hazard

What Twin Falls faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

51% of expected damage

Well below average · higher than 9% of U.S. places

Recorded about once every 3 years in the area

Heat waves

15% of expected damage

Above average · higher than 73% of U.S. places

Recorded about 4 times a year in the area

Earthquakes

13% of expected damage

Above average · higher than 68% of U.S. places

Winter weather

6% of expected damage

Above average · higher than 54% of U.S. places

Recorded about 10 times a year in the area

Cold waves

5% of expected damage

Above average · higher than 56% of U.S. places

Recorded about once every 5 years in the area

Lower here

TornadoesHailIce stormsWildfireLandslidesStrong windLightningDroughtVolcanic activity

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamis

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Twin Falls flood?

Every paid claim on a federal flood insurance policy in Twin Falls, from FEMA’s records.

11paid claims since 1979

$22Kpaid to owners

0homes flooded more than once

19792026

of homes in flood zones
are insured

of all homes
are insured

No community discount. Twin Falls isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Twin Falls County.

Disasters that hit Twin Falls

Federal disasters declared here

None of the disasters declared for Twin Falls County shows FEMA aid or repair money reaching Twin Falls itself in FEMA’s records.

Brought FEMA money into Twin FallsDeclared for Twin Falls County only

Twin Falls County has had 2 natural disasters declared since 1953, most often floods and hurricanes.

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Twin Falls covers 8 census tracts, combined by population.

Money that reached townFlood claims are matched to Twin Falls’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Twin Falls. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Twin Falls total about $5.4M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.