Natural hazards · Weldon Spring

Weldon Spring, MO natural hazards

Most of the natural-hazard damage FEMA expects in Weldon Spring comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 1 claim here since 2015. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Weldon Spring?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Weldon Spring to be higher than in 57% of U.S. communities, mostly from inland flooding.

Inland flooding55%Tornadoes14%Earthquakes9%Cold waves6%Hail6%Everything else10%

By hazard

What Weldon Spring faces

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

Inland flooding

55% of expected damage

Above average · higher than 69% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

14% of expected damage

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

Earthquakes

9% of expected damage

Well above average · higher than 77% of U.S. places

Cold waves

6% of expected damage

Well below average · higher than 17% of U.S. places

Recorded about 2 times a year in the area

Hail

6% of expected damage

Well above average · higher than 90% of U.S. places

Recorded about 5 times a year in the area

Lower here

HurricanesIce stormsWinter weatherHeat wavesWildfireLandslidesStrong windLightningDrought

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 Weldon Spring flood?

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

1paid claims since 2015

$7Kpaid to owners

0homes flooded more than once

20152026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: St. Charles County.

Disasters that hit Weldon Spring

2 federal disasters brought FEMA money here

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

Brought FEMA money into Weldon SpringDeclared for St. Charles County only

2022

Severe Storms and Flooding

3 households applied for aid $2K aid approved

2015

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

1 household applied for aid $1K aid approved

St. Charles County has had 23 natural disasters declared since 1953, most often severe storms and floods.

Around Weldon Spring

Weldon Spring and the towns around it

Very lowLowModerateHighVery high

O'Fallonmostly inland floodingHigh

St. Petersmostly inland floodingHigh

Weldon Springmostly inland floodingModerate

Chesterfieldmostly inland floodingModerate

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. Weldon Spring covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Weldon Spring’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Weldon Spring. 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 Weldon Spring total about $4.2M 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.