Photo: Guywelch2000 · CC BY-SA 4.0On FEMA’s figures, few U.S. towns expect more hazard damage per building than Twisp, mostly from river and rain flooding
On FEMA’s National Risk Index, Twisp gets a D− for hazard risk: among the highest expected damage per building of U.S. towns. Most of that expected damage is river and rain flooding (53%), then wildfire (45%). 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
What Twisp 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
Wildfire
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.
What’s behind Twisp’s grade
River and rain flooding is 53% of the building damage FEMA expects in Twisp, and Twisp’s rate of river and rain flooding damage is in the top 1% of U.S. census tracts. Wildfire adds 45%, at a rate in the top 1% of U.S. census tracts.
D− among the highest expected damage per building of U.S. towns (21,298).
All of Twisp’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $2.0M a year in losses across Twisp: $1.7M to buildings, the rest to people and crops.
Does Twisp flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Twisp. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Twisp isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Okanogan County.2 federal disasters brought FEMA money to Twisp
Disasters that paid out in Twisp itself (aid to households or repair grants to the Town of Twisp), newest first, with that year’s flood claims.
- 2015Wildfires and Mudslides$30K to the Town of Twisp for repairs
- 2014Wildfires$40K to the Town of Twisp for repairs
Okanogan County has had 15 natural disasters declared by the President since 1953, most often severe storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Also 23 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Okanogan County, 2000–2026.
Old photos of Twisp after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Twisp archive →Get ready for what Twisp faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- 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.
- 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.
- 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.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Twisp
Is Twisp at risk for natural disasters?
On FEMA’s National Risk Index, Twisp has among the highest expected damage per building of U.S. towns: D− for hazard risk. Most of the expected damage is river and rain flooding (53%) and wildfire (45%). 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 Twisp 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 Okanogan County, 0.8% of all homes carry federal flood insurance.
How much is flood insurance in Twisp?
FEMA’s Community Rating System list shows no discount for Twisp’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Twisp?
By FEMA money that reached Twisp, Wildfires (2014): $40K to the Town of Twisp for repairs.
Is Twisp at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (53%), and Twisp’s rate for it is in the top 1% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Twisp.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Twisp’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.