Natural hazards · Pomona

Pomona, CA natural hazards

Most of the natural-hazard damage FEMA expects in Pomona comes from earthquakes, and overall the risk is very high for a U.S. community. Flood insurance has paid 5 claims here since 1978. 8 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Pomona?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Pomona to be higher than in 96% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes62%Inland flooding36%Everything else1%

By hazard

What Pomona faces

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

Earthquakes

62% of expected damage

Well above average · higher than 96% of U.S. places

Inland flooding

36% of expected damage

Well above average · higher than 96% of U.S. places

Recorded about 4 times a year in the area

Lower here

TornadoesHailWinter weatherHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingHurricanesIce stormsCold wavesAvalanchesTsunamisVolcanic 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 Pomona flood?

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

5paid claims since 1978

$43Kpaid to owners

0homes flooded more than once

19782026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Los Angeles County.

Disasters that hit Pomona

8 federal disasters brought FEMA money here

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

Brought FEMA money into PomonaDeclared for Los Angeles County only

2025

Wildfires and Straight-Line Winds

354 households applied for aid $5K aid approved

2020

Wildfires

23 households applied for aid $5K aid approved

2018

Wildfires

3 households applied for aid

2017

Wildfires, Flooding, Mudflows, and Debris Flows

1 household applied for aid

2008

Wildfires

1 household applied for aid

2007

Wildfires, Flooding, Mud Flows, and Debris Flows

7 households applied for aid

2004

Severe Storms, Flooding, Debris Flows, and Mudslides

73 households applied for aid $26K aid approved $3K to the City of Pomona for repairs

2003

Wildfires, Flooding, Mudflow and Debris Flow Directly Related T

184 households applied for aid $23K aid approved

Los Angeles County has had 74 natural disasters declared since 1953, most often fires and floods.

Around Pomona

Pomona and the towns around it

Very lowLowModerateHighVery high

Chinomostly inland floodingVery high

Pomonamostly earthquakesVery high

Claremontmostly earthquakesVery high

Chino Hillsmostly inland floodingVery high

La Vernemostly earthquakesVery high

Industrymostly earthquakesVery high

Walnutmostly earthquakesVery high

San Dimasmostly earthquakesVery high

Diamond Barmostly 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. Pomona covers 32 census tracts, combined by population.

Money that reached townFlood claims are matched to Pomona’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Pomona. 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 Pomona total about $129M 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.