Natural hazards · Caln

Caln, PA natural hazards

Most of the natural-hazard damage FEMA expects in Caln comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 28 claims here since 1987.

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

Expected damage

How exposed is Caln?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Caln to be higher than in 37% of U.S. communities, mostly from inland flooding.

Inland flooding72%Tornadoes5%Heat waves5%Everything else17%

By hazard

What Caln faces

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

Inland flooding

72% of expected damage

Above average · higher than 63% of U.S. places

Recorded about 5 times a year in the area

Tornadoes

5% of expected damage

Below average · higher than 47% of U.S. places

Heat waves

5% of expected damage

Well below average · higher than 15% of U.S. places

Recorded about 8 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherCold wavesWildfireEarthquakesLandslidesStrong windLightningDrought

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 Caln flood?

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

28paid claims since 1987

$480Kpaid to owners

4homes flooded more than once

19872026

Biggest named events

Hurricane Ida: 6 claims, $265K
Mid-spring storms: 2 claims, $15K
Hurricane Irene: 1 claim, $3K

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. Caln isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Chester County.

Disasters that hit Caln

Federal disasters declared here

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

Brought FEMA money into CalnDeclared for Chester County only

Chester County has had 22 natural disasters declared since 1953, most often hurricanes and floods.

Around Caln

Caln and the towns around it

Very lowLowModerateHighVery high

Downingtownmostly inland floodingHigh

Coatesvillemostly inland floodingHigh

Calnmostly inland floodingLow

Valleymostly inland floodingLow

East Brandywinemostly inland floodingVery low

East Calnmostly inland floodingVery low

West Brandywinemostly inland floodingVery low

West Bradfordmostly inland floodingVery low

East Fallowfieldmostly 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. Caln covers 2 census tracts, combined by population.

Money that reached townFlood claims are matched to Caln’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Caln. 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 Caln 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.