Natural hazards · Port Isabel

Port Isabel, TX natural hazards

Most of the natural-hazard damage FEMA expects in Port Isabel comes from hurricanes, and overall the risk is high for a U.S. community. Flood insurance has paid 221 claims here since 1980. 10 federal disasters brought FEMA money into town.

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

How exposed is Port Isabel?

71
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Port Isabel to be higher than in 71% of U.S. communities, mostly from hurricanes.

Hurricanes66%Inland flooding14%Cold waves9%Everything else11%
By hazard

What Port Isabel faces

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

Hurricanes

66% of expected damage
Well above average · higher than 95% of U.S. places
Recorded about once every 6 years in the area

Inland flooding

14% of expected damage
Well below average · higher than 5% of U.S. places
Recorded about 3 times a year in the area

Cold waves

9% of expected damage
Above average · higher than 69% of U.S. places
Recorded about 2 times a year in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

DroughtAvalanchesTsunamisVolcanic 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 Port Isabel flood?

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

221paid claims since 1980
$2.1Mpaid to owners
7homes flooded more than once
19802026

Biggest named events

  • Hurricane Allen: 165 claims, $1.7M
  • Hurricane Dolly: 12 claims, $115K
  • Heavy rains: 1 claim, $4K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (1) ■ flooded 2+ times

of homes in flood zones
are insured
of all homes
are insured
No community discount. Port Isabel isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Cameron County.
Disasters that hit Port Isabel

10 federal disasters brought FEMA money here

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

Brought FEMA money into Port IsabelDeclared for Cameron County only
2025

Severe Storms and Flooding

12 households applied for aid $33K aid approved
2024

Hurricane Beryl

$5K to the City of Port Isabel for repairs
2021

Severe Winter Storms

24 households applied for aid $8K aid approved
2019

Severe Storms and Flooding

1 household applied for aid
2018

Severe Storms and Flooding

1 household applied for aid
2015

Severe Storms, Tornadoes, Straight-Line Winds, and Flooding

4 households applied for aid
2010

Hurricane Alex

32 households applied for aid $40K aid approved $20K to the City of Port Isabel for repairs
2008

Hurricane Dolly

709 households applied for aid $553K aid approved $337K to the City of Port Isabel for repairs
2002

Severe Storms, Tornadoes and Flooding

16 households applied for aid $58K aid approved
1999

Hurricane Bret

$22K to the City of Port Isabel for repairs
Cameron County has had 29 natural disasters declared since 1953, most often hurricanes and floods.
Around Port Isabel

Port Isabel and the towns around it

Brownsville: High, mostly hurricanesLaguna Heights: High, mostly hurricanesEncantada-Ranchito-El Calaboz: High, mostly hurricanesVilla Pancho: High, mostly hurricanesLos Fresnos: High, mostly hurricanesReid Hope King: High, mostly hurricanesDel Mar Heights: High, mostly hurricanesSan Benito: High, mostly hurricanesSouth Point: High, mostly hurricanesLaguna Vista: High, mostly hurricanesPort Isabel: High, mostly hurricanes Port IsabelBrownsvilleLaguna Heights
Very lowLowModerateHighVery high
Brownsvillemostly hurricanesHigh
Laguna Heightsmostly hurricanesHigh
Port Isabelmostly hurricanesHigh
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. Port Isabel covers 2 census tracts, combined by population.
Money that reached townFlood claims are matched to Port Isabel’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Port Isabel. 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 Port Isabel total about $2.2M 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