What is the flood risk in 90001 Los Angeles?

The flood hazard score for 90001 is 1.3/10 (LOW). This score is derived from FEMA flood zones, elevation data, and NFIP claim density.

Is 90001 in a hurricane zone?

Los Angeles (90001) is not typically in a direct hurricane path, though tropical storm remnants can affect the area.

What natural disasters affect Los Angeles, California?

The primary natural hazards for Los Angeles (90001) are earthquake, wildfire, flood. Calchis provides hazard scores for each peril using data from USGS, NOAA, and FEMA.

Los Angeles, California 90001

Los Angeles County · California

33.9425° N, 118.2551° W

Calchis Hazard Scores

⊕Earthquake

8.6/10EXTREME

USGS 2023 NSHM ground motion: 0.806 g peak ground acceleration with a 2% chance of exceedance in 50 years (site class BC)8.6 / 10.0

Historical damage potential (Hazus W1 thresholds)2.9 / 3.5

Model v4.2 · Hazard score

≋Flood

1.3/10LOW

FEMA flood zone (X)0.3 / 4.0

Elevation above base flood level (estimated)1.0 / 3.0

NFIP flood claims per 1,000 homes per year in the county (0.053; 8,991 claims, NFIP 1978–2024; full scale 4.132, the 99th percentile of US counties)0.0 / 3.0

Model v4.2 · Hazard score

◠Tornado

1.1/10LOW

Significant (EF2+) tornadoes per 10,000 km2 per year within ~83km (0.115; full scale 1.056, the 99th percentile of US cells; SPC 1980–2024)0.5 / 5.0

Manufactured housing density proxy0.5 / 3.0

Nocturnal tornado fraction (fatality multiplier)0.3 / 2.0

Model v4.2 · Hazard score

●Winter Storm

1.0/10LOW

Winter events per forecast zone per year, state average (1.0542)0.9 / 5.0

Ice storm and blizzard share of winter events (0.7%)0.1 / 5.0

Model v4.2 · Hazard score

△Wildfire

0.9/10LOW

Wildfires of 1,000+ acres per 10,000 km2 per year within ~83km (0.591; full scale 3.232, the 99th percentile of US cells; MTBS 1984–2024)0.6 / 3.5

Wildland-Urban Interface exposure: 0% of homes directly or indirectly exposed to wildfire, community average (USDA Forest Service, Wildfire Risk to Communities)0.0 / 3.5

Regional vegetation/fuel load proxy (unsourced constant)2.5 / 3.0

Model v4.2 · Hazard score

Not scored here: Hurricane, Hail — each holds under 0.5% of the national record for that peril and is not on the kept list.

Natural Hazards in Los Angeles

Based on historical data and geographic analysis, the primary natural hazards affecting Los Angeles, California (90001) are earthquake, wildfire and flood. These scores are derived from federal and academic sources.

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