Natural hazards · St. Johns

St. Johns, AZ natural hazards

Most of the natural-hazard damage FEMA expects in St. Johns comes from heat waves, 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 St. Johns?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in St. Johns to be higher than in 90% of U.S. communities, mostly from heat waves and wildfires.

Heat waves34%Wildfire32%Inland flooding27%Drought6%Everything else1%

By hazard

What St. Johns faces

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

Heat waves

34% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about 23 times a year in the area

Wildfire

32% of expected damage

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

Inland flooding

27% of expected damage

Well above average · higher than 87% of U.S. places

Recorded about 8 times a year in the area

Drought

6% of expected damage

Recorded about 58 times a year in the area

Lower here

HurricanesTornadoesHailWinter weatherEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingIce stormsCold wavesAvalanchesTsunamisVolcanic activity

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 St. Johns flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Maricopa County.

Disasters that hit St. Johns

Federal disasters declared here

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

Brought FEMA money into St. JohnsDeclared for Maricopa County only

Maricopa County has had 23 natural disasters declared since 1953, most often fires and floods.

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. St. Johns covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to St. Johns’s own flood-insurance community; household aid to the registrant’s city; repair grants to St. Johns. 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 St. Johns total about $2.4M 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.