Natural hazards · Thornville

Thornville, OH natural hazards

Most of the natural-hazard damage FEMA expects in Thornville comes from inland flooding, and overall the risk is low for a U.S. community. 4 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Thornville?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Thornville to be higher than in 24% of U.S. communities, mostly from inland flooding.

Inland flooding63%Drought10%Tornadoes8%Everything else20%

By hazard

What Thornville faces

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

Inland flooding

63% of expected damage

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

Recorded about 2 times a year in the area

Drought

10% of expected damage

Recorded about 5 times a year in the area

Tornadoes

8% of expected damage

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

Recorded about once every 96 years in the area

Lower here

HurricanesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 Thornville flood?

FEMA's records show no paid flood insurance claims in Thornville.

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Perry County.

What’s been done with FEMA grants

2storm safe rooms built

Disasters that hit Thornville

4 federal disasters brought FEMA money here

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

Brought FEMA money into ThornvilleDeclared for Perry County only

2019

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

1 household applied for aid $1K aid approved

2008

Severe Wind Storm Associated With Tropical Depression Ike

$12K to the Village of Thornville for repairs

2004

Severe Winter Storms, Flooding, and Mudslides

14 households applied for aid $7K aid approved

2004

Severe Storms and Flooding

3 households applied for aid

Perry County has had 15 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. Thornville 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 Thornville’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Village of Thornville. 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.