Natural hazards · Ashburn

Ashburn, VA natural hazards

Most of the natural-hazard damage FEMA expects in Ashburn 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 Ashburn?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Ashburn to be higher than in 11% of U.S. communities, mostly from inland flooding.

Inland flooding61%Tornadoes9%Heat waves8%Hurricanes6%Everything else16%

By hazard

What Ashburn faces

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

Inland flooding

61% of expected damage

Well below average · higher than 24% of U.S. places

Recorded about 3 times a year in the area

Tornadoes

9% of expected damage

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

Heat waves

8% of expected damage

Below average · higher than 43% of U.S. places

Recorded about 5 times a year in the area

Hurricanes

6% of expected damage

Above average · higher than 66% of U.S. places

Recorded about once every 10 years in the area

Lower here

HailIce stormsWinter weatherCold wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Ashburn flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Loudoun County.

Disasters that hit Ashburn

1 federal disaster brought FEMA money here

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

Brought FEMA money into AshburnDeclared for Loudoun County only

2003

Hurricane Isabel

2 households applied for aid

Loudoun County has had 13 natural disasters declared since 1953, most often winter storms and hurricanes.

Around Ashburn

Ashburn and the towns around it

Very lowLowModerateHighVery high

Broadlandsmostly inland floodingVery low

Ashburnmostly inland floodingVery low

Belmontmostly inland floodingVery low

Goose Creek Villagemostly inland floodingVery low

Moorefieldmostly inland floodingVery low

Kincoramostly inland floodingVery low

University Centermostly inland floodingVery low

Sterlingmostly inland floodingVery low

Dulles Town Centermostly inland floodingVery low

One Loudounmostly 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. Ashburn covers 8 census tracts, combined by population.

Money that reached townFlood claims are matched to Ashburn’s own flood-insurance community; household aid to the registrant’s city; repair grants to Ashburn. 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 Ashburn total about $6.3M 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.