Allison Park is calmer than 96% of U.S. communities
Most of the natural-hazard damage FEMA expects in Allison Park comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 131 claims here since 1978.
What stands out about Allison Park’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
How exposed is Allison Park?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 4% of U.S. communities, mostly from inland flooding.
Calmer than 2,448 of the 2,558 Pennsylvania towns we cover.
Allison Park covers 5 census tracts, combined by population.
Does Allison Park flood? Yes: 131 flood claims since 1978
Every paid claim on a federal flood insurance policy in Allison Park, from FEMA’s records.
- Tropical Storm Ivan47 claims · $2.7M
- Hurricane Ida1 claim · $4K
Allison Park isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Allegheny County.The storms Allison Park remembers
None of the disasters declared for Allegheny County shows FEMA aid or repair money reaching Allison Park itself in FEMA’s records.
- 200463 flood claims paidThe most in any one year on record
- 199011 flood claims paidOne of the three biggest flood years on record
- 198619 flood claims paidOne of the three biggest flood years on record
Allegheny County has had 16 natural disasters declared since 1953, most often floods and severe storms.
Old photos of Allison Park after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Allison Park archive →Allison Park and its neighbors
Allison Park has the lowest rating of the 4 towns around it. Tap a town to see its hazards.
Rating = expected yearly storm and flood damage as a share of what’s there, vs. U.S. communities. Flood claims = paid federal flood insurance claims on record.
What Allison Park faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Cold waves
Tornadoes
Get ready for what Allison Park actually faces
A short kit for its top hazards, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Let faucets drip so pipes don’t freeze.
- Know where your water shutoff is.
- Never heat the house with the oven or a grill.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Disasters here can come any time of year
The month each of Allegheny County’s 16 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’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 there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Allison Park’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to Allison Park.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels. Across Allison Park, expected losses total about $5.5M a year, counting buildings, people and crops.
Storm stories
Memories, warnings and help from neighbors in Allison Park.
Your answer becomes a post in Town Square.
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. Preparedness tips: Ready.gov. An average of past damage, not a forecast.