Natural hazards · Slippery Rock

Slippery Rock, PA natural hazards

Most of the natural-hazard damage FEMA expects in Slippery Rock comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 2 claims here since 1996. 2 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Slippery Rock?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Slippery Rock to be higher than in 1% of U.S. communities, mostly from inland flooding.

Inland flooding72%Tornadoes9%Earthquakes5%Strong wind5%Everything else8%

By hazard

What Slippery Rock 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

Well below average · higher than 5% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

9% of expected damage

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

Earthquakes

5% of expected damage

Below average · higher than 31% of U.S. places

Strong wind

5% of expected damage

Above average · higher than 65% of U.S. places

Recorded about 2 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesLightning

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 Slippery Rock flood?

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

2paid claims since 1996

$20Kpaid to owners

0homes flooded more than once

19962026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Butler County.

Disasters that hit Slippery Rock

2 federal disasters brought FEMA money here

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

Brought FEMA money into Slippery RockDeclared for Butler County only

2004

Tropical Depression Ivan

13 households applied for aid $64K aid approved

2004

Severe Storms and Flooding Associated With Tropical Depression Frances

15 households applied for aid $25K aid approved

Butler County has had 9 natural disasters declared since 1953, most often hurricanes and floods.

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. Slippery Rock covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Slippery Rock’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Borough of Slippery Rock. 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 Slippery Rock total about $522K 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.