Photo: Nyttend · Public domainStorms, floods and disasters in Port Jefferson
Port Jefferson isn’t graded for hazard risk: Port Jefferson has 306 residents; we grade towns of 1,000 or more.
What Port Jefferson 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
Earthquakes
Tornadoes
Hail
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 Port Jefferson flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Port Jefferson. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Port Jefferson isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Shelby County.4 federal disasters brought FEMA money to Port Jefferson
Disasters that paid out in Port Jefferson itself (aid to households or repair grants to the Village of Port Jefferson), newest first, with that year’s flood claims.
- 2008Severe Wind Storm Associated with Tropical Depression Ike$1K to the Village of Port Jefferson for repairs
- 2004Severe Winter Storms, Flooding, and Mudslides$2K to the Village of Port Jefferson for repairs
- 2004Snow$947 to the Village of Port Jefferson for repairs
- 2003Severe Storms and Flooding6 households applied for aid$12K aid approved
Shelby County has had 11 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Port Jefferson after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Port Jefferson archive →Get ready for what Port Jefferson 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.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- Park in a garage or under cover when storms are forecast.
- Stay away from windows while it falls.
- Photograph roof and car damage for your insurer.
- 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 Port Jefferson
Is Port Jefferson 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 Shelby County, 20% of homes in mapped flood zones carry federal flood insurance, and 0.6% of all homes do.
How much is flood insurance in Port Jefferson?
FEMA’s Community Rating System list shows no discount for Port Jefferson’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 Port Jefferson?
By FEMA money that reached Port Jefferson, Severe Storms and Flooding (2003): 6 households applied for aid, $12K approved.
Storm stories
Memories, warnings and help from neighbors in Port Jefferson.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Port Jefferson’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.