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Carey BlockCarey Block · Photo: 25or6to4 · CC BY-SA 4.0
C−Hazard risk
Natural hazards in Greybull · FEMA

FEMA puts Greybull’s expected hazard damage per building above that of 84% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Greybull gets a C− for hazard risk: higher expected damage per building than 84% of U.S. towns. Most of that expected damage is river and rain flooding (93%). Flood insurance has paid 1 claim here since 2014.

River and rain flooding 93%Earthquakes 5%Tornadoes 1%

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 84%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
Hazard risk
C−
in Wyoming · higher than 84% of U.S. towns
Main hazard
River and rain flooding
93% of expected building damage
Flood claims
1
paid since 2014 · $12K
Flood claims per home
1 per 1,000
fewer than 74% of U.S. towns
By hazard

What Greybull faces

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

River and rain flooding

93%of expected building damage
Well above average · in the top 8% of U.S. census tracts
Recorded about once a year in the area
Smaller shares here
 Earthquakes Tornadoes Wildfire Hail Strong wind Lightning Winter storms Ice storms Cold waves Heat waves Landslides Avalanches top 2% Volcanic activity
FEMA models no building damage here
Coastal floodingHurricanesTsunamis
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts cold waves at 12% of Greybull’s expected losses. Cold waves 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 Greybull’s grade

River and rain flooding is 93% of the building damage FEMA expects in Greybull, and Greybull’s rate of river and rain flooding damage is in the top 8% of U.S. census tracts.

Where Greybull sits
Greybull
Least damageMiddleMost damage

C− higher expected damage per building than 84% of U.S. towns (21,298).

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

What drives the damage to buildings
River and rain flooding93%Earthquakes5%Everything else2%

In dollars, FEMA expects about $1.4M a year in losses across Greybull: $1.1M to buildings, the rest to people and crops.

Shared tract.All of Greybull’s 1,651 residents (2020 census) live in one census tract, which it shares with Burlington town (314 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 Greybull flood? Rarely: 1 flood claim since 2014

Every paid claim on a federal flood insurance policy in Greybull, from FEMA’s records: 1.2 per 1,000 homes, fewer than 74% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
2014: 1 claim2015: 0 claims2016: 0 claims2017: 0 claims2018: 0 claims2019: 0 claims2020: 0 claims2021: 0 claims2022: 0 claims2023: 0 claims2024: 0 claims2025: 0 claims2026: 0 claims2014
20142026
1
paid claims since 2014
$12K
paid to owners
0
homes flooded more than once
$12K
average claim
of homes in flood zones are insured
of all homes are insured
No community discount

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

Insurance rates: Big Horn County.
Disasters

The storms Greybull remembers

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

  1. 20141 flood claims paidNo declaration for the county that year
Disasters declared, by decade
Paid out in GreybullBig Horn County only

Big Horn County has had 2 natural disasters declared by the President since 1953, most often severe storms, then floods.

Were you here?

Old photos of Greybull after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Greybull archive →
Be ready

Get ready for what Greybull faces

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

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 ↗
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 Greybull

Is Greybull at risk for natural disasters?

On FEMA’s National Risk Index, Greybull has higher expected damage per building than 84% of U.S. towns: C− for hazard risk. Most of the expected damage is river and rain flooding (93%). 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.

Does Greybull flood?

Flood insurance has paid 1 claim in Greybull since 2014, $12K in all, or 1.2 per 1,000 homes, fewer than 74% of U.S. towns with a flood insurance record.

Is Greybull 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 Big Horn County, 4% of homes in mapped flood zones carry federal flood insurance, and 0.2% of all homes do.

How much is flood insurance in Greybull?

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

Is Greybull at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (93%), and Greybull’s rate for it is in the top 8% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Greybull.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Greybull’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.