Natural hazards · Brown

Brown, PA natural hazards

Most of the natural-hazard damage FEMA expects in Brown comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 58 claims here since 1979.

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

Expected damage

How exposed is Brown?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Brown to be higher than in 58% of U.S. communities, mostly from inland flooding.

Inland flooding81%Hurricanes5%Everything else14%

By hazard

What Brown faces

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

Inland flooding

81% of expected damage

Well above average · higher than 81% of U.S. places

Recorded about once every 2 years in the area

Hurricanes

5% of expected damage

Above average · higher than 69% of U.S. places

Recorded about once every 17 years in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningAvalanches

Not a risk here

Coastal floodingDroughtTsunamisVolcanic 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 Brown flood?

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

58paid claims since 1979

$467Kpaid to owners

0homes flooded more than once

19792026

Biggest named events

Tropical Storm Ivan: 12 claims, $98K
Not a named storm: 2 claims, $1K

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Mifflin County.

Disasters that hit Brown

Federal disasters declared here

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

Brought FEMA money into BrownDeclared for Mifflin County only

Mifflin County has had 14 natural disasters declared since 1953, most often floods and hurricanes.

Around Brown

Brown and the towns around it

Very lowLowModerateHighVery high

Armaghmostly inland floodingHigh

Jacksonmostly inland floodingModerate

Derrymostly inland floodingModerate

Brownmostly inland floodingModerate

Granvillemostly inland floodingModerate

Unionmostly inland floodingLow

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. Brown covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Brown’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Township of Brown. 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 Brown total about $1.3M 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.