Natural hazards · Union

Union, OH natural hazards

Most of the natural-hazard damage FEMA expects in Union comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 1 claim here since 2023.

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

Expected damage

How exposed is Union?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Union to be higher than in 13% of U.S. communities, mostly from inland flooding.

Inland flooding52%Lightning12%Heat waves11%Tornadoes10%Everything else15%

By hazard

What Union faces

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

Inland flooding

52% of expected damage

Below average · higher than 27% of U.S. places

Recorded about 2 times a year in the area

Lightning

12% of expected damage

Below average · higher than 35% of U.S. places

Heat waves

11% of expected damage

Above average · higher than 67% of U.S. places

Recorded about 5 times a year in the area

Tornadoes

10% of expected damage

Above average · higher than 58% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherCold wavesWildfireEarthquakesLandslidesStrong windDrought

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 Union flood?

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

1paid claims since 2023

$7Kpaid to owners

0homes flooded more than once

20232026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Ross County.

Disasters that hit Union

Federal disasters declared here

None of the disasters declared for Ross County shows FEMA aid or repair money reaching Union itself in FEMA’s records.

Brought FEMA money into UnionDeclared for Ross County only

Ross County has had 14 natural disasters declared since 1953, most often severe storms and floods.

Around Union

Union and the towns around it

Very lowLowModerateHighVery high

Springfieldmostly inland floodingModerate

Twinmostly inland floodingModerate

Sciotomostly inland floodingLow

Deerfieldmostly inland floodingLow

Concordmostly inland floodingLow

Waynemostly inland floodingLow

Pickawaymostly inland floodingLow

Greenmostly inland floodingVery low

Unionmostly inland floodingVery low

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. Union covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Union’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of Union. 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 Union total about $1.6M 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.