Natural hazards · Mason

Mason, IL natural hazards

Most of the natural-hazard damage FEMA expects in Mason comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 8 claims here since 1982. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Mason?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mason to be higher than in 44% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding36%Cold waves24%Tornadoes14%Earthquakes8%Heat waves6%Strong wind5%Everything else6%

By hazard

What Mason faces

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

Inland flooding

36% of expected damage

Below average · higher than 43% of U.S. places

Recorded about once a year in the area

Cold waves

24% of expected damage

Above average · higher than 59% of U.S. places

Recorded about 4 times a year in the area

Tornadoes

14% of expected damage

Well above average · higher than 94% of U.S. places

Earthquakes

8% of expected damage

Well above average · higher than 75% of U.S. places

Heat waves

6% of expected damage

Above average · higher than 62% of U.S. places

Recorded about 7 times a year in the area

Strong wind

5% of expected damage

Well above average · higher than 95% of U.S. places

Recorded about 5 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireLandslidesLightningDrought

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 Mason flood?

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

8paid claims since 1982

$36Kpaid to owners

0homes flooded more than once

19822026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Mason County.

Disasters that hit Mason

3 federal disasters brought FEMA money here

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

Brought FEMA money into MasonDeclared for Mason County only

2011

Severe Winter Storm and Snowstorm

$5K to the City of Mason for repairs

2006

Snow

$2K to the City of Mason for repairs

1999

Il-Winter Storm 1/1/99

$3K to the City of Mason for repairs

Mason County has had 16 natural disasters declared since 1953, most often floods and severe storms.

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. Mason is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Mason’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Mason. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.