Storms, floods and disasters in Northwest Harbor
Northwest Harbor isn’t graded for hazard risk: Northwest Harbor is a Census area inside a town, graded with the town. Flood insurance has paid 3 claims here since 2021.
What Northwest Harbor faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
River and rain flooding
Hurricanes
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
Does Northwest Harbor flood? Rarely: 3 flood claims since 2021
Every paid claim on a federal flood insurance policy in Northwest Harbor, from FEMA’s records.
- Hurricane Ida1 claim · $341
Northwest Harbor isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Suffolk County.The storms Northwest Harbor remembers
None of the 26 disasters declared for Suffolk County shows FEMA aid or repair money reaching Northwest Harbor itself in FEMA’s records, so these are its biggest flood-claim years.
- 20211 flood claims paidThe year of Remnants of Hurricane Ida, declared for Suffolk County
- 20231 flood claims paidNo declaration for the county that year
- 20241 flood claims paidThe year of Severe Storm and Flooding, declared for Suffolk County
Suffolk County has had 26 natural disasters declared by the President since 1953, most often severe storms, then hurricanes and tropical storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees; the 2001 World Trade Center declarations.
Old photos of Northwest Harbor after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Northwest Harbor archive →Northwest Harbor and its neighbors
How expected damage per building compares across the town line. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Shelter Island | A+less damage than 98% | river and rain flooding | 72 |
| Sag Harbor | A+less damage than 95% | river and rain flooding | 112 |
| East Hampton | Aless damage than 94% | river and rain flooding | 587 |
| Southampton | A−less damage than 83% | river and rain flooding | 2,567 |
| East Hampton North | — | a Census area inside a town; graded with the town | |
| Springs | — | a Census area inside a town; graded with the town | |
| Wainscott | — | 612 residents; we grade 1,000+ | |
Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.
Get ready for what Northwest Harbor faces
A short kit for the hazards that drive the building damage here, 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.
- 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.
Questions about natural hazards in Northwest Harbor
Does Northwest Harbor flood?
Flood insurance has paid 3 claims in Northwest Harbor since 2021, $186K in all. The most claims came from Hurricane Ida (1).
Is Northwest Harbor in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Suffolk County, 66% of homes in mapped flood zones carry federal flood insurance, and 5.4% of all homes do.
How much is flood insurance in Northwest Harbor?
FEMA’s Community Rating System list shows no discount for Northwest Harbor’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Northwest Harbor?
By flood claims, Hurricane Ida: 1 paid, $341.
Storm stories
Memories, warnings and help from neighbors in Northwest Harbor.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Northwest Harbor’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.