Natural hazards · Markham

Markham, WA natural hazards

Most of the natural-hazard damage FEMA expects in Markham comes from tsunamis, and overall the risk is very high for a U.S. community.

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

Expected damage

How exposed is Markham?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Markham to be higher than in 86% of U.S. communities, mostly from tsunamis.

Tsunamis84%Earthquakes13%Everything else3%

By hazard

What Markham faces

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

Tsunamis

84% of expected damage

Well above average · among the top 1% of U.S. places

Earthquakes

13% of expected damage

Well above average · higher than 94% of U.S. places

Lower here

Inland floodingCoastal floodingTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningDroughtAvalanches

Not a risk here

HurricanesVolcanic activity

Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Markham flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Grays Harbor County.

Disasters that hit Markham

Federal disasters declared here

None of the disasters declared for Grays Harbor County shows FEMA aid or repair money reaching Markham itself in FEMA’s records.

Brought FEMA money into MarkhamDeclared for Grays Harbor County only

Grays Harbor County has had 30 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. Markham is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Markham’s own flood-insurance community; household aid to the registrant’s city; repair grants to Markham. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.