Valhalla is calmer than 89% of U.S. communities
Most of the natural-hazard damage FEMA expects in Valhalla comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 33 claims here since 1978.
What stands out about Valhalla’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
How exposed is Valhalla?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 11% of U.S. communities, mostly from inland flooding.
Calmer than 1,318 of the 1,524 New York towns we cover.
Valhalla covers 1 census tract, combined by population.
What Valhalla faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Hurricanes
Cold waves
Earthquakes
Does Valhalla flood? Sometimes: 33 flood claims since 1978
Every paid claim on a federal flood insurance policy in Valhalla, from FEMA’s records.
- Hurricane Ida9 claims · $311K
- Hurricane Irene5 claims · $41K
- The Not a named storm2 claims · $3K
Valhalla isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Westchester County.Federal disasters declared here
None of the disasters declared for Westchester County shows FEMA aid or repair money reaching Valhalla itself in FEMA’s records.
Westchester County has had 24 natural disasters declared since 1953, most often hurricanes and floods.
Get ready for what Valhalla 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.
- The season runs June through November and peaks from mid-August to mid-October.
- Bring in porch furniture and anything the wind can throw.
- Fill the gas tank and charge phones before the storm arrives.
- Let faucets drip so pipes don’t freeze.
- Know where your water shutoff is.
- Never heat the house with the oven or a grill.
- 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.
Valhalla and its neighbors
Valhalla ranks 2nd calmest of 4 towns around it. Tap a town to see its hazards.
| Town | Rating | Mostly | Flood claims |
|---|---|---|---|
| North Castle | Very low | inland flooding | 43 |
| Greenburgh | Very low | inland flooding | 402 |
| Valhalla | Very low | inland flooding | 33 |
| Mount Pleasant | Very low | inland flooding | 162 |
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.
Most disasters here begin in August–October
The month each of Westchester County’s 24 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 Valhalla’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to Valhalla.
- 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 Valhalla, expected losses total about $886K a year, counting buildings, people and crops.
Storm stories
Memories, warnings and help from neighbors in Valhalla.
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.