Natural hazards · Sully Square

Sully Square, VA natural hazards

Most of the natural-hazard damage FEMA expects in Sully Square comes from inland flooding, and overall the risk is very low for a U.S. community.

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

Expected damage

How exposed is Sully Square?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Sully Square to be higher than in 3% of U.S. communities, mostly from inland flooding.

Inland flooding64%Hurricanes14%Earthquakes8%Everything else14%

By hazard

What Sully Square faces

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

Inland flooding

64% of expected damage

Well below average · higher than 7% of U.S. places

Recorded about 6 times a year in the area

Hurricanes

14% of expected damage

Above average · higher than 74% of U.S. places

Recorded about once every 10 years in the area

Earthquakes

8% of expected damage

Above average · higher than 52% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightning

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 Sully Square flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Fairfax County.

Disasters that hit Sully Square

Federal disasters declared here

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

Brought FEMA money into Sully SquareDeclared for Fairfax County only

Fairfax County has had 17 natural disasters declared since 1953, most often winter storms and hurricanes.

Around Sully Square

Sully Square and the towns around it

Very lowLowModerateHighVery high

Chantillymostly inland floodingLow

Franklin Farmmostly inland floodingLow

Florismostly inland floodingVery low

Sully Squaremostly 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. Sully Square covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Sully Square’s own flood-insurance community; household aid to the registrant’s city; repair grants to Sully Square. 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 Sully Square total about $955K 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.