Natural hazards · Blue Ash

Blue Ash, OH natural hazards

Most of the natural-hazard damage FEMA expects in Blue Ash comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 3 claims here since 1981. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Blue Ash?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Blue Ash to be higher than in 5% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding46%Tornadoes28%Heat waves9%Earthquakes7%Cold waves6%Everything else5%

By hazard

What Blue Ash faces

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

Inland flooding

46% of expected damage

Well below average · higher than 6% of U.S. places

Recorded about 5 times a year in the area

Tornadoes

28% of expected damage

Well above average · higher than 88% of U.S. places

Heat waves

9% of expected damage

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

Recorded about 6 times a year in the area

Earthquakes

7% of expected damage

Above average · higher than 53% of U.S. places

Cold waves

6% of expected damage

Well below average · higher than 24% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherWildfireLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Blue Ash flood?

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

3paid claims since 1981

$4Kpaid to owners

0homes flooded more than once

19812026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Hamilton County.

What’s been done with FEMA grants

1storm safe rooms built

Disasters that hit Blue Ash

2 federal disasters brought FEMA money here

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

Brought FEMA money into Blue AshDeclared for Hamilton County only

2008

Severe Wind Storm Associated With Tropical Depression Ike

$185K to the City of Blue Ash for repairs

2004

Snow

$54K to the City of Blue Ash for repairs

Hamilton County has had 15 natural disasters declared since 1953, most often severe storms and floods.

Around Blue Ash

Blue Ash and the towns around it

Very lowLowModerateHighVery high

Readingmostly inland floodingModerate

Evendalemostly inland floodingLow

Sycamoremostly inland floodingVery low

Sharonvillemostly inland floodingVery low

Montgomerymostly inland floodingVery low

Breconmostly inland floodingVery low

Kenwoodmostly inland floodingVery low

Rossmoynemostly inland floodingVery low

Blue Ashmostly 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. Blue Ash covers 3 census tracts, combined by population.

Money that reached townFlood claims are matched to Blue Ash’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Blue Ash. 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 Blue Ash total about $4.7M 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.