Natural hazards · La Mesa

La Mesa, CA natural hazards

Most of the natural-hazard damage FEMA expects in La Mesa comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 25 claims here since 1979. 5 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is La Mesa?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in La Mesa to be higher than in 44% of U.S. communities, mostly from inland flooding and earthquakes.

Inland flooding53%Earthquakes42%Everything else5%

By hazard

What La Mesa faces

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

Inland flooding

53% of expected damage

Below average · higher than 43% of U.S. places

Recorded about 8 times a year in the area

Earthquakes

42% of expected damage

Well above average · higher than 85% of U.S. places

Lower here

HurricanesTornadoesHailWinter weatherHeat wavesWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingIce stormsCold wavesDroughtAvalanchesTsunamisVolcanic 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 La Mesa flood?

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

25paid claims since 1979

$373Kpaid to owners

3homes flooded more than once

19792026

Biggest named events

February California Atmospheric River: 2 claims, $75K
San Diego Flooding: 1 claim, $4K
Pineapple Express - Southern: 1 claim, $342

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. La Mesa 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 Diego County.

Disasters that hit La Mesa

5 federal disasters brought FEMA money here

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

Brought FEMA money into La MesaDeclared for San Diego County only

2024

Severe Storm and Flooding

189 households applied for aid $804K aid approved

2020

Wildfires

19 households applied for aid

2007

Wildfires, Flooding, Mud Flows, and Debris Flows

24 households applied for aid $7K to the City of La Mesa for repairs

2004

Severe Storms, Flooding, Debris Flows, and Mudslides

12 households applied for aid $10K aid approved $285K to the City of La Mesa for repairs

2003

Wildfires, Flooding, Mudflow and Debris Flow Directly Related T

14 households applied for aid $1K aid approved $22K to the City of La Mesa for repairs

San Diego County has had 44 natural disasters declared since 1953, most often fires and floods.

Around La Mesa

La Mesa and the towns around it

Very lowLowModerateHighVery high

El Cajonmostly inland floodingHigh

San Diegomostly earthquakesHigh

Spring Valleymostly inland floodingModerate

Casa de Oro-Mount Helixmostly inland floodingModerate

Lemon Grovemostly inland floodingModerate

La Mesamostly inland floodingModerate

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. La Mesa covers 14 census tracts, combined by population.

Money that reached townFlood claims are matched to La Mesa’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of La Mesa. 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 La Mesa total about $12.9M 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.