Natural hazards · Annex

Annex, OR natural hazards

Most of the natural-hazard damage FEMA expects in Annex 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 Annex?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Annex to be higher than in 75% of U.S. communities, mostly from inland flooding and wildfires.

Inland flooding44%Wildfire43%Everything else13%

By hazard

What Annex faces

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

Inland flooding

44% of expected damage

Above average · higher than 66% of U.S. places

Recorded about once a year in the area

Wildfire

43% of expected damage

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

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesEarthquakesLandslidesStrong windLightningDroughtAvalanchesVolcanic activity

Not a risk here

Coastal floodingHurricanesTsunamis

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 Annex flood?

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

of all homes
are insured

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

Insurance rates: Malheur County.

Disasters that hit Annex

Federal disasters declared here

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

Brought FEMA money into AnnexDeclared for Malheur County only

Malheur County has had 5 natural disasters declared since 1953, most often floods and fires.

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. Annex 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 Annex’s own flood-insurance community; household aid to the registrant’s city; repair grants to Annex. 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.