Natural hazards · Aquinnah

Aquinnah, MA natural hazards

Most of the natural-hazard damage FEMA expects in Aquinnah comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 3 claims here since 1991. 5 federal disasters brought FEMA money into town.

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

How exposed is Aquinnah?

28
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Aquinnah to be higher than in 28% of U.S. communities, mostly from inland flooding and hurricanes.

Inland flooding60%Hurricanes33%Everything else7%
By hazard

What Aquinnah faces

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

Inland flooding

60% of expected damage
Below average · higher than 29% of U.S. places
Recorded about once every 6 years in the area

Hurricanes

33% of expected damage
Well above average · higher than 86% of U.S. places
Recorded about once every 6 years in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

AvalanchesTsunamisVolcanic 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 Aquinnah flood?

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

3paid claims since 1991
$24Kpaid to owners
1homes flooded more than once
19912026

Biggest named events

  • The “Halloween” storm: 1 claim, $10K
  • Hurricane Bob: 1 claim, $4K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured
of all homes
are insured
No community discount. Aquinnah isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Dukes County.
Disasters that hit Aquinnah

5 federal disasters brought FEMA money here

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

Brought FEMA money into AquinnahDeclared for Dukes County only
2012

Hurricane Sandy

$25K to the Town of Aquinnah for repairs
2011

Tropical Storm Irene

$807 to the Town of Aquinnah for repairs
2007

Severe Storms and Inland and Coastal Flooding

$6K to the Town of Aquinnah for repairs
2005

Record And/Or Near Record Snow

$5K to the Town of Aquinnah for repairs
2003

Snow

$3K to the Town of Aquinnah for repairs
Dukes County has had 18 natural disasters declared since 1953, most often hurricanes and winter storms.
Around Aquinnah

Aquinnah and the towns around it

Chilmark: Low, mostly inland floodingGosnold: Low, mostly inland floodingWest Tisbury: Low, mostly inland floodingFalmouth: Moderate, mostly inland floodingDartmouth: Very low, mostly inland floodingTisbury: Low, mostly inland floodingAquinnah: Low, mostly inland flooding AquinnahChilmarkGosnold
Very lowLowModerateHighVery high
Aquinnahmostly inland floodingLow
Chilmarkmostly inland floodingLow
Gosnoldmostly inland floodingLow
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. Aquinnah is smaller than a census tract, so it shares the figures of the tract around its center.
Money that reached townFlood claims are matched to Aquinnah’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Aquinnah. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01