Natural hazards · San Antonio

San Antonio, FL natural hazards

Most of the natural-hazard damage FEMA expects in San Antonio comes from hurricanes, and overall the risk is moderate for a U.S. community. Flood insurance has paid 2 claims here since 2024. 10 federal disasters brought FEMA money into town.

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

How exposed is San Antonio?

54
Moderate
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in San Antonio to be higher than in 54% of U.S. communities, mostly from hurricanes and inland flooding.

Hurricanes50%Inland flooding27%Tornadoes15%Everything else8%
By hazard

What San Antonio faces

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

Hurricanes

50% of expected damage
Well above average · higher than 91% of U.S. places
Recorded about once every 4 years in the area

Inland flooding

27% of expected damage
Well below average · higher than 14% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

15% of expected damage
Above average · higher than 69% of U.S. places
Recorded about once every 60 years in the area

Lower here

HailCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingIce stormsWinter weatherAvalanchesTsunamisVolcanic 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 flood?

Every paid claim on a federal flood insurance policy in San Antonio, from FEMA’s records.

2paid claims since 2024
$79Kpaid to owners
0homes flooded more than once
20242026

Biggest named events

  • Hurricane Milton: 2 claims, $79K
of homes in flood zones
are insured
of all homes
are insured
No community discount. San Antonio isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Pasco County.
Disasters that hit San Antonio

10 federal disasters brought FEMA money here

Disasters the President declared that paid out in San Antonio itself: aid to households, or repair grants to the City of San Antonio.

Brought FEMA money into San AntonioDeclared for Pasco County only
2024

Hurricane Milton

523 households applied for aid $267K aid approved
2024

Hurricane Helene

98 households applied for aid $39K aid approved
2023

Hurricane Idalia

8 households applied for aid $700 aid approved
2022

Hurricane Ian

33 households applied for aid $3K aid approved
2017

Hurricane Irma

238 households applied for aid $68K aid approved
2012

Tropical Storm Debby

7 households applied for aid $2K aid approved
2004

Hurricane Jeanne

36 households applied for aid $39K aid approved
2004

Hurricane Ivan

1 household applied for aid
2004

Hurricane Frances

30 households applied for aid $30K aid approved
2004

Tropical Storm Bonnie and Hurricane Charley

3 households applied for aid $1K aid approved
Pasco County has had 38 natural disasters declared since 1953, most often hurricanes and severe storms.
Around San Antonio

San Antonio and the towns around it

St. Leo: Moderate, mostly hurricanesPasadena Hills: High, mostly inland floodingZephyrhills: High, mostly inland floodingDade City: High, mostly hurricanesWesley Chapel: High, mostly inland floodingSan Antonio: Moderate, mostly hurricanes San AntonioSt. LeoPasadena Hills
Very lowLowModerateHighVery high
Pasadena Hillsmostly inland floodingHigh
San Antoniomostly hurricanesModerate
St. Leomostly hurricanesModerate
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 covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to San Antonio’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of San Antonio. 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 total about $2.9M 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01