Natural hazards · Addison

Addison, PA natural hazards

Most of the natural-hazard damage FEMA expects in Addison comes from inland flooding, and overall the risk is high for a U.S. community.

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

Expected damage

How exposed is Addison?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Addison to be higher than in 67% of U.S. communities, mostly from inland flooding.

Inland flooding91%Everything else9%

By hazard

What Addison faces

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

Inland flooding

91% of expected damage

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

Recorded about 2 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDroughtAvalanches

Not a risk here

Coastal floodingTsunamisVolcanic 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 Addison flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Somerset County.

Disasters that hit Addison

Federal disasters declared here

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

Brought FEMA money into AddisonDeclared for Somerset County only

Somerset County has had 18 natural disasters declared since 1953, most often floods and winter 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. Addison 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 Addison’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Addison. 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.