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Afton Wyoming Elkhorn Arch July 31 2013Photo: Cfrolander · CC BY-SA 3.0
CHazard risk
Natural hazards in Afton · FEMA

FEMA puts Afton’s expected hazard damage per building above that of 65% of U.S. towns, mostly from earthquakes

On FEMA’s National Risk Index, Afton gets a C for hazard risk: higher expected damage per building than 65% of U.S. towns. Most of that expected damage is earthquakes (55%), then river and rain flooding (34%). FEMA’s files show no paid flood insurance claims here.

Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded

more than 65%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
By hazard

What Afton faces

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

Earthquakes

55%of expected building damage
Well above average · higher than 89% of U.S. census tracts

River and rain flooding

34%of expected building damage
Below average · lower than 80% of U.S. census tracts
Recorded about once every 2 years in the area

Wildfire

10%of expected building damage
Well above average · in the top 5% of U.S. census tracts
Smaller shares here
 Winter storms Hail Tornadoes Strong wind Ice storms Lightning Cold waves Landslides Volcanic activity top 5%
FEMA models no building damage here
Coastal floodingHurricanesHeat wavesAvalanchesTsunamis
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts avalanches at 67% of Afton’s expected losses. Avalanches do little damage to buildings (0.0%), so they aren’t part of the grade.

Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.

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

What’s behind Afton’s grade

Earthquakes are 55% of the building damage FEMA expects in Afton, and Afton’s rate of earthquakes damage is higher than 89% of U.S. census tracts. Wildfire adds 10%, at a rate in the top 5% of U.S. census tracts.

Where Afton sits
Afton
Least damageMiddleMost damage

C higher expected damage per building than 65% of U.S. towns (21,298).

All of Afton’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
Earthquakes55%River and rain flooding34%Wildfire10%Everything else1%

In dollars, FEMA expects about $3.8M a year in losses across Afton: $910K to buildings, the rest to people and crops.

Shared tract.All of Afton’s 2,172 residents (2020 census) live in one census tract, which it shares with Grover CDP (481 residents) and Osmond CDP (405 residents) and Smoot CDP (376 residents) and Auburn CDP (375 residents) and Fairview CDP (277 residents). FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s, the same for all of them. The flood claims below are the town’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Afton flood? No paid flood claims on record

FEMA’s records show no paid flood insurance claims in Afton. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.

of homes in flood zones are insured
of all homes are insured
No community discount

Afton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Lincoln County.
Disasters

The storms Afton remembers

None of the 2 disasters declared for Lincoln County shows FEMA aid or repair money reaching Afton itself in FEMA’s records, so these are its biggest flood-claim years.

Disasters declared, by decade
Paid out in AftonLincoln County only

Lincoln County has had 2 natural disasters declared by the President since 1953, most often severe storms.

Also 1 FEMA wildfire suppression grant (Fire Management Assistance, not a disaster declaration) for fires in Lincoln County, 2002–2002.

Next door

Afton and its neighbors

Afton has the lowest expected damage per building of the 1 graded towns here. Tap a town to see its hazards.

Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
AftonCmore damage than 65%earthquakes0
Osmond—390 residents; we grade 1,000+

Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.

Be ready

Get ready for what Afton faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

Earthquakes
  • Drop, cover and hold on.
  • Strap tall furniture and the water heater to the wall.
  • Know how to shut off the gas.
More from Ready.gov ↗
When the river rises
  • Turn around at flooded roads: a foot of moving water can carry off a car.
  • Flood insurance usually takes 30 days to start, so buy it before the forecast.
  • Keep papers and medicines up high, in a grab-and-go bag.
More from Ready.gov ↗
Wildfire
  • Clear dead leaves and brush within 5 feet of the house.
  • Sign up for local alerts and know two ways out.
  • Keep N95 masks for smoky days.
More from Ready.gov ↗
Before you buy or rent
  • Look up the address on FEMA’s flood map.
  • Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
  • Get a flood insurance quote early: policies usually start 30 days after you buy.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Afton

Is Afton at risk for natural disasters?

On FEMA’s National Risk Index, Afton has higher expected damage per building than 65% of U.S. towns: C for hazard risk. Most of the expected damage is earthquakes (55%) and river and rain flooding (34%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.

Is Afton in a flood zone?

Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Lincoln County, 5% of homes in mapped flood zones carry federal flood insurance, and 0.3% of all homes do.

How much is flood insurance in Afton?

FEMA’s Community Rating System list shows no discount for Afton’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

Is Afton at risk from earthquakes?

It is the largest share of the building damage FEMA expects here (55%), and Afton’s rate for it is higher than 89% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Afton.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Afton’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.