FEMA expects more hazard damage per building in Westmont than in 88% of U.S. towns, mostly from earthquakes
On FEMA’s National Risk Index, Westmont gets a D for hazard risk: higher expected damage per building than 88% of U.S. towns, #266 of 847 in California. Most of that expected damage is earthquakes (66%), then river and rain flooding (33%). FEMA’s files show no paid flood insurance claims here.
Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded
What Westmont faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
Earthquakes
River and rain flooding
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
What’s behind Westmont’s grade
Earthquakes are 66% of the building damage FEMA expects in Westmont, and Westmont’s rate of earthquakes damage is in the top 5% of U.S. census tracts. Next is river and rain flooding at 33% (higher than 51% of U.S. census tracts).
D #266 of 847 in California; higher expected damage per building than 88% of U.S. towns (21,298).
Westmont’s residents live in 7 census tracts; FEMA’s figures are combined by where they live.
The typical California town has higher expected damage than 92% of U.S. towns; within the state, Westmont has less expected damage per building than 69% of California towns.
In dollars, FEMA expects about $9.0M a year in losses across Westmont: $6.0M to buildings, the rest to people and crops.
Does Westmont flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Westmont. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Westmont 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.The storms Westmont remembers
None of the 40 disasters declared for Los Angeles County shows FEMA aid or repair money reaching Westmont itself in FEMA’s records, so these are its biggest flood-claim years.
Los Angeles County has had 40 natural disasters declared by the President since 1953, most often severe storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Also 44 FEMA wildfire suppression grants (Fire Management Assistance, not a disaster declaration) for fires in Los Angeles County, 2002–2025.
Westmont and its neighbors
Westmont has the lowest expected damage per building of the 4 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Westmont | Dmore damage than 88% | earthquakes | 0 |
| West Athens | Dmore damage than 90% | earthquakes | — |
| Inglewood | D−more damage than 95% | river and rain flooding | 8 |
| Los Angeles | D−more damage than 96% | earthquakes | 1,980 |
Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.
Get ready for what Westmont faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Westmont
Is Westmont at risk for natural disasters?
On FEMA’s National Risk Index, Westmont has higher expected damage per building than 88% of U.S. towns: D for hazard risk, #266 of 847 in California. Most of the expected damage is earthquakes (66%) and river and rain flooding (33%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Westmont in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Los Angeles County, 33% of homes in mapped flood zones carry federal flood insurance, and 0.5% of all homes do.
How much is flood insurance in Westmont?
FEMA’s Community Rating System list shows no discount for Westmont’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Westmont at risk from earthquakes?
It is the largest share of the building damage FEMA expects here (66%), and Westmont’s rate for it is in the top 5% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Westmont.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Westmont’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.