Natural hazards · Knox

Knox, PA natural hazards

Most of the natural-hazard damage FEMA expects in Knox comes from inland flooding, and overall the risk is very low for a U.S. community. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Knox?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Knox to be higher than in 2% of U.S. communities, mostly from inland flooding.

Inland flooding58%Lightning12%Cold waves9%Tornadoes8%Strong wind7%Everything else6%

By hazard

What Knox faces

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

Inland flooding

58% of expected damage

Well below average · higher than 8% of U.S. places

Recorded about 2 times a year in the area

Lightning

12% of expected damage

Below average · higher than 33% of U.S. places

Cold waves

9% of expected damage

Below average · higher than 49% of U.S. places

Recorded about 4 times a year in the area

Tornadoes

8% of expected damage

Above average · higher than 50% of U.S. places

Recorded about once every 46 years in the area

Strong wind

7% of expected damage

Well above average · higher than 78% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslides

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 Knox flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Clarion County.

Disasters that hit Knox

1 federal disaster brought FEMA money here

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

Brought FEMA money into KnoxDeclared for Clarion County only

2004

Tropical Depression Ivan

1 household applied for aid $6K aid approved

Clarion County has had 12 natural disasters declared since 1953, most often floods and hurricanes.

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. Knox 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 Knox’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Knox. 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.