Natural hazards · San Ysidro

San Ysidro, NM natural hazards

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

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

Expected damage

How exposed is San Ysidro?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in San Ysidro to be higher than in 38% of U.S. communities, mostly from inland flooding.

Inland flooding71%Heat waves7%Drought6%Cold waves5%Everything else11%

By hazard

What San Ysidro faces

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

Inland flooding

71% of expected damage

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

Recorded about 3 times a year in the area

Heat waves

7% of expected damage

Well above average · higher than 77% of U.S. places

Recorded about 5 times a year in the area

Drought

6% of expected damage

Recorded about 53 times a year in the area

Cold waves

5% of expected damage

Above average · higher than 74% of U.S. places

Recorded about once every 9 years in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Ysidro flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Dona Ana County.

Disasters that hit San Ysidro

Federal disasters declared here

None of the disasters declared for Dona Ana County shows FEMA aid or repair money reaching San Ysidro itself in FEMA’s records.

Brought FEMA money into San YsidroDeclared for Dona Ana County only

Dona Ana County has had 7 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. San Ysidro covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to San Ysidro’s own flood-insurance community; household aid to the registrant’s city; repair grants to San Ysidro. 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 Ysidro total about $1.0M 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.