Natural hazards · Byrnes Mill

Byrnes Mill, MO natural hazards

Most of the natural-hazard damage FEMA expects in Byrnes Mill comes from inland flooding, and overall the risk is very high for a U.S. community. Flood insurance has paid 7 claims here since 2008. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Byrnes Mill?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Byrnes Mill to be higher than in 90% of U.S. communities, mostly from inland flooding.

Inland flooding70%Tornadoes9%Earthquakes6%Strong wind5%Everything else11%

By hazard

What Byrnes Mill faces

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

Inland flooding

70% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

9% of expected damage

Well above average · higher than 82% of U.S. places

Earthquakes

6% of expected damage

Well above average · higher than 80% of U.S. places

Strong wind

5% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about 6 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Byrnes Mill flood?

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

7paid claims since 2008

$565Kpaid to owners

1homes flooded more than once

20082026

Biggest named events

March storm: 2 claims, $91K
Early winter storms: 2 claims, $164K
Late spring severe storms: 2 claims, $123K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (1) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Jefferson County.

What’s been done with FEMA grants

1flood-prone properties bought out and cleared

Disasters that hit Byrnes Mill

3 federal disasters brought FEMA money here

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

Brought FEMA money into Byrnes MillDeclared for Jefferson County only

2025

Severe Storms, Straight-Line Winds, Tornadoes, and Wildfires

1 household applied for aid

2017

Severe Storms, Tornadoes, Straight-Line Winds and Flooding

4 households applied for aid $7K aid approved $58K to the City of Byrnes Mill for repairs

2015

Severe Storms, Tornadoes, Straight-Line Winds, and Flooding

7 households applied for aid $22K aid approved $54K to the City of Byrnes Mill for repairs

Jefferson County has had 24 natural disasters declared since 1953, most often severe storms and floods.

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. Byrnes Mill covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Byrnes Mill’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Byrnes Mill. 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 Byrnes Mill total about $4.5M 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.