Natural hazards · Blawnox

Blawnox, PA natural hazards

Most of the natural-hazard damage FEMA expects in Blawnox comes from inland flooding, and overall the risk is very high for a U.S. community. Flood insurance has paid 2 claims here since 2007. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Blawnox?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Blawnox to be higher than in 87% of U.S. communities, mostly from inland flooding.

Inland flooding95%Everything else5%

By hazard

What Blawnox faces

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

Inland flooding

95% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about 7 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong 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 Blawnox flood?

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

2paid claims since 2007

$12Kpaid to owners

1homes flooded more than once

20072026

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Allegheny County.

Disasters that hit Blawnox

1 federal disaster brought FEMA money here

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

Brought FEMA money into BlawnoxDeclared for Allegheny County only

2004

Tropical Depression Ivan

2 households applied for aid $7K aid approved

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

Around Blawnox

Blawnox and the towns around it

Very lowLowModerateHighVery high

Blawnoxmostly inland floodingVery high

O'Haramostly inland floodingModerate

Penn Hillsmostly 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. Blawnox covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Blawnox’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Blawnox. 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 Blawnox total about $1.4M 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.