Photo: CzarJobKhaya · CC BY-SA 4.0Storms, floods and disasters in East Moriches
East Moriches isn’t graded for hazard risk: East Moriches is a Census area inside a town, graded with the town. Flood insurance has paid 145 claims here since 1978.
What East Moriches 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
Coastal 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 East Moriches flood? Yes: 145 flood claims since 1978
Every paid claim on a federal flood insurance policy in East Moriches, from FEMA’s records.
- Hurricane Sandy59 claims · $3.3M
- The Blizzard of 199316 claims · $290K
- The “Halloween” storm13 claims · $64K
East Moriches 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 East Moriches remembers
None of the 26 disasters declared for Suffolk County shows FEMA aid or repair money reaching East Moriches itself in FEMA’s records, so these are its biggest flood-claim years.
- 201259 flood claims paidThe year of Hurricane Sandy, declared for Suffolk County
- 199316 flood claims paidThe year of Severe Blizzard, declared for Suffolk County
- 199115 flood claims paidThe year of Hurricane Bob, 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 East Moriches after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the East Moriches archive →East Moriches 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 |
|---|---|---|---|
| Southampton | A−less damage than 83% | river and rain flooding | 2,567 |
| Brookhaven | A−less damage than 80% | river and rain flooding | 3,825 |
| Center Moriches | — | a Census area inside a town; graded with the town | |
| Eastport | — | a Census area inside a town; graded with the town | |
| Manorville | — | a Census area inside a town; graded with the town | |
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 East Moriches 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.
- Know your evacuation zone and the way off the coast.
- Storm surge comes fast: leave when you’re told, not when the water arrives.
- Move cars to high ground before king tides and nor’easters.
- 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 East Moriches
Does East Moriches flood?
Flood insurance has paid 145 claims in East Moriches since 1978, $4.6M in all. The most claims came from Hurricane Sandy (59).
Is East Moriches 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 East Moriches?
FEMA’s Community Rating System list shows no discount for East Moriches’ 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 East Moriches?
By flood claims, Hurricane Sandy: 59 paid, $3.3M.
Storm stories
Memories, warnings and help from neighbors in East Moriches.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where East Moriches’ 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.