Natural hazards · San Antonio Heights

San Antonio Heights, CA natural hazards

Most of the natural-hazard damage FEMA expects in San Antonio Heights comes from inland flooding, 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 San Antonio Heights?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in San Antonio Heights to be higher than in 99% of U.S. communities, mostly from inland flooding and wildfires.

Inland flooding49%Wildfire28%Earthquakes22%Everything else1%

By hazard

What San Antonio Heights faces

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

Inland flooding

49% of expected damage

Well above average · higher than 98% of U.S. places

Recorded about 13 times a year in the area

Wildfire

28% of expected damage

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

Earthquakes

22% of expected damage

Well above average · higher than 93% of U.S. places

Lower here

TornadoesHailWinter weatherCold wavesHeat wavesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesIce stormsDroughtAvalanchesTsunamisVolcanic 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 San Antonio Heights flood?

FEMA's records show no paid flood insurance claims in San Antonio Heights.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: San Bernardino County.

Disasters that hit San Antonio Heights

Federal disasters declared here

None of the disasters declared for San Bernardino County shows FEMA aid or repair money reaching San Antonio Heights itself in FEMA’s records.

Brought FEMA money into San Antonio HeightsDeclared for San Bernardino County only

San Bernardino County has had 56 natural disasters declared since 1953, most often fires and floods.

Around San Antonio Heights

San Antonio Heights and the towns around it

Very lowLowModerateHighVery high

San Antonio Heightsmostly inland floodingVery high

Uplandmostly inland floodingVery high

Rancho Cucamongamostly inland floodingVery high

Claremontmostly earthquakesVery high

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. San Antonio Heights covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to San Antonio Heights’s own flood-insurance community; household aid to the registrant’s city; repair grants to San Antonio Heights. 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 San Antonio Heights total about $5.3M 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.