What is the flood risk in 63101 St. Louis?

The flood hazard score for 63101 is 2.9/10 (LOW). This score is derived from FEMA flood zones, elevation data, and NFIP claim density.

Is 63101 in a hurricane zone?

St. Louis (63101) is not typically in a direct hurricane path, though tropical storm remnants can affect the area.

What natural disasters affect St. Louis, Missouri?

The primary natural hazards for St. Louis (63101) are severe weather, flood. Calchis provides hazard scores for each peril using data from USGS, NOAA, and FEMA.

St. Louis, Missouri 63101

St. Louis County · Missouri

38.6270° N, 90.1994° W

Calchis Hazard Scores

◉Hail

10.0/10EXTREME

Hail events per 10,000 km2 per year, observed within ~83km (72.64)5.0 / 5.0

Regional roof vulnerability proxy (pre-ATTOM)3.0 / 5.0

Model v2.5 · Hazard score

◠Tornado

10.0/10EXTREME

Tornado events per 10,000 km2 per year, observed within ~83km (6.53)5.0 / 5.0

Manufactured housing density proxy1.5 / 3.0

Nocturnal tornado fraction (fatality multiplier)0.5 / 2.0

Model v2.5 · Hazard score

●Winter Storm

3.9/10LOW

Winter events per forecast zone per year (1.8398)1.6 / 5.0

Ice storm and blizzard share of winter events (13.9%)2.3 / 5.0

Model v2.5 · Hazard score

≋Flood

2.9/10LOW

FEMA flood zone (X)0.3 / 4.0

Elevation above base flood level (estimated)1.0 / 3.0

Federal disaster declarations (24 in MO since 1953 · ~1 per 3.0yr)1.6 / 3.0

Model v2.5 · Hazard score

△Wildfire

1.1/10LOW

Federal disaster declarations (1 in MO since 1953 · ~1 per 73.0yr)0.0 / 3.5

Wildland-Urban Interface exposure, measured development/wildland mixture (0.223)0.8 / 3.5

Regional vegetation/fuel load proxy (unsourced constant)0.5 / 3.0

Model v2.5 · Hazard score

⊕Earthquake

0.5/10LOW

Seismic source zone activity (Gutenberg-Richter, Central US / New Madrid zone aggregate M5+ rate)0.0 / 3.5

Proximity to mapped Quaternary faults0.3 / 3.0

Historical damage potential (Hazus W1 thresholds)2.9 / 3.5

Model v2.5 · Hazard score

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

Natural Hazards in St. Louis

Based on historical data and geographic analysis, the primary natural hazards affecting St. Louis, Missouri (63101) are severe weather and flood. These scores are derived from federal and academic sources.

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Missouri Hazard Profiles

Missouri Severe Weather Missouri Flood

Nearby Areas

64108

Kansas City

Data Sources

USGS Earthquake Hazards.gov

NOAA National Hurricane Center.gov

FEMA Flood Map Service.gov

NIFC Active Fire Data.gov

NOAA Storm Prediction Center.gov

NOAA Storm Events Database.gov