Photo: dougtone · CC BY-SA 2.0FEMA puts Greenwich’s expected hazard damage per building below that of 78% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Greenwich gets an A− for hazard risk: lower expected damage per building than 78% of U.S. towns. Most of that expected damage is river and rain flooding (71%), then tornadoes (12%). FEMA’s files show no paid flood insurance claims here.
Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded
What Greenwich 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
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.
What’s behind Greenwich’s grade
River and rain flooding is 71% of the building damage FEMA expects in Greenwich, and Greenwich’s rate of river and rain flooding damage is lower than 67% of U.S. census tracts. Next is tornadoes at 12% (higher than 74% of U.S. census tracts).
A− lower expected damage per building than 78% of U.S. towns (21,298).
All of Greenwich’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $396K a year in losses across Greenwich: $298K to buildings, the rest to people and crops.
Does Greenwich flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Greenwich. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Greenwich isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Huron County.3 federal disasters brought FEMA money to Greenwich
Disasters that paid out in Greenwich itself (aid to households or repair grants to the Village of Greenwich), newest first, with that year’s flood claims.
- 2008Record Snow and Near Record Snow$5K to the Village of Greenwich for repairs
- 2006Severe Storms, Tornadoes, Straight Line Winds, and Flooding4 households applied for aid$9K aid approved
- 2004Severe Winter Storms, Flooding, and Mudslides77 households applied for aid$69K aid approved
Huron County has had 10 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 Greenwich after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Greenwich archive →Get ready for what Greenwich 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.
- 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 Greenwich
Is Greenwich at risk for natural disasters?
On FEMA’s National Risk Index, Greenwich has lower expected damage per building than 78% of U.S. towns: A− for hazard risk. Most of the expected damage is river and rain flooding (71%) and tornadoes (12%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Greenwich 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 Huron County, 18% of homes in mapped flood zones carry federal flood insurance, and 0.3% of all homes do.
How much is flood insurance in Greenwich?
FEMA’s Community Rating System list shows no discount for Greenwich’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 Greenwich?
By FEMA money that reached Greenwich, Severe Winter Storms, Flooding, and Mudslides (2004): 77 households applied for aid, $69K approved.
Is Greenwich at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (71%), and Greenwich’s rate for it is lower than 67% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Greenwich.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Greenwich’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.