Natural hazards · Casper

Casper, WY natural hazards

Most of the natural-hazard damage FEMA expects in Casper comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 20 claims here since 1978. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Casper?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Casper to be higher than in 50% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding61%Cold waves18%Earthquakes8%Everything else13%

By hazard

What Casper faces

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

Inland flooding

61% of expected damage

Above average · higher than 72% of U.S. places

Recorded about once a year in the area

Cold waves

18% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about 2 times a year in the area

Earthquakes

8% of expected damage

Well above average · higher than 75% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic activity

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 Casper flood?

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

20paid claims since 1978

$209Kpaid to owners

0homes flooded more than once

19782026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Natrona County.

Disasters that hit Casper

1 federal disaster brought FEMA money here

Disasters the President declared that paid out in Casper itself: aid to households, or repair grants to the City of Casper.

Brought FEMA money into CasperDeclared for Natrona County only

2023

Flooding

$298K to the City of Casper for repairs

Natrona County has had 6 natural disasters declared since 1953, most often fires and floods.

Around Casper

Casper and the towns around it

Very lowLowModerateHighVery high

Red Buttemostly inland floodingHigh

Caspermostly inland floodingModerate

Evansvillemostly inland floodingModerate

Hartrandtmostly inland floodingModerate

Millsmostly inland floodingLow

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. Casper covers 11 census tracts, combined by population.

Money that reached townFlood claims are matched to Casper’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Casper. 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 Casper total about $16.8M 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.