Natural hazards · Sudden Valley

Sudden Valley, WA natural hazards

Most of the natural-hazard damage FEMA expects in Sudden Valley comes from inland flooding, and overall the risk is high for a U.S. community.

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

Expected damage

How exposed is Sudden Valley?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Sudden Valley to be higher than in 77% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding74%Earthquakes16%Cold waves6%Everything else5%

By hazard

What Sudden Valley faces

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

Inland flooding

74% of expected damage

Well above average · higher than 90% of U.S. places

Recorded about once every 6 years in the area

Earthquakes

16% of expected damage

Well above average · higher than 83% of U.S. places

Cold waves

6% of expected damage

Above average · higher than 67% of U.S. places

Recorded about once every 2 years in the area

Lower here

TornadoesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningVolcanic activity

Not a risk here

Coastal floodingHurricanesDroughtAvalanchesTsunamis

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 Sudden Valley flood?

FEMA's records show no paid flood insurance claims in Sudden Valley.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Whatcom County.

Disasters that hit Sudden Valley

Federal disasters declared here

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

Brought FEMA money into Sudden ValleyDeclared for Whatcom County only

Whatcom County has had 23 natural disasters declared since 1953, most often floods and severe storms.

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. Sudden Valley covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Sudden Valley’s own flood-insurance community; household aid to the registrant’s city; repair grants to Sudden Valley. 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 Sudden Valley total about $1.3M 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.