Natural hazards · Monrovia

Monrovia, CA natural hazards

Most of the natural-hazard damage FEMA expects in Monrovia comes from earthquakes, and overall the risk is very high for a U.S. community. Flood insurance has paid 7 claims here since 1978. 7 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Monrovia?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Monrovia to be higher than in 91% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes55%Inland flooding35%Avalanches6%Everything else4%

By hazard

What Monrovia faces

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

Earthquakes

55% of expected damage

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

Inland flooding

35% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about 4 times a year in the area

Avalanches

6% of expected damage

Well below average · higher than 0% of U.S. places

Recorded about once every 64 years in the area

Lower here

TornadoesHailWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesIce stormsDroughtTsunamisVolcanic 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 Monrovia flood?

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

7paid claims since 1978

$35Kpaid to owners

1homes flooded more than once

19782026

Biggest named events

Pineapple Express - Southern: 1 claim, $2K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

No community discount. Monrovia 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 Monrovia

7 federal disasters brought FEMA money here

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

Brought FEMA money into MonroviaDeclared for Los Angeles County only

2025

Wildfires and Straight-Line Winds

728 households applied for aid $151K aid approved $42K to the City of Monrovia for repairs

2022

Severe Winter Storms, Flooding, Landslides, and Mudslides

$2.7M to the City of Monrovia for repairs

2020

Wildfires

15 households applied for aid $1.9M to the City of Monrovia for repairs

2018

Wildfires

1 household applied for aid

2017

Severe Winter Storms, Flooding, and Mudslides

$36K to the City of Monrovia for repairs

2004

Severe Storms, Flooding, Debris Flows, and Mudslides

34 households applied for aid $17K aid approved $349K to the City of Monrovia for repairs

2003

Wildfires, Flooding, Mudflow and Debris Flow Directly Related T

5 households applied for aid $131 aid approved

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

Around Monrovia

Monrovia and the towns around it

Very lowLowModerateHighVery high

Bradburymostly avalanchesVery high

Mayflower Villagemostly inland floodingVery high

Arcadiamostly earthquakesVery high

South Monrovia Islandmostly earthquakesVery high

Monroviamostly earthquakesVery high

Duartemostly earthquakesVery high

Irwindalemostly 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. Monrovia covers 8 census tracts, combined by population.

Money that reached townFlood claims are matched to Monrovia’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Monrovia. 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 Monrovia total about $30.0M 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.