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Seneca County, New York

Natural disaster risk, federal disaster history and flood insurance facts.

Very Low overall risk
55th of 62highest risk in New York
$10Mexpected losses a year
8federal declarations
1 in 111homes with flood insurance
Photo: U.S. Geological Survey, public domain

Seneca County, New York has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 58% of US counties. It ranks 55th of 62 counties in New York. The costliest hazards here are inland flooding, drought and tornadoes. FEMA estimates about $9.8 million a year in expected losses, or roughly $291 per resident. Since 1972 it has been included in 8 federal disaster or emergency declarations for natural events (5 major disasters). The most recent was in October 2018 (severe storms and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (123 policies). Since 1978, federal flood insurance has paid about $977,000 on 108 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Seneca County

$7.6 million a yearExpected losses. Damaging events about once every 2 years.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Drought

Moderate
$461,790 a yearExpected losses. Damaging events about 3 times a year.
  • Check local water restrictions.
  • Choose drought-tolerant plants.
$401,232 a yearExpected losses. Damaging events about once every 15 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
HazardRatingScoreExpected loss a year
Inland floodingLow63.6
$8M
DroughtModerate72.9
$462K
TornadoLow30.8
$401K
HailLow53.2
$227K
Strong windLow29.7
$217K
EarthquakeVery Low47.0
$176K
Cold waveVery Low20.2
$170K
Ice stormModerate69.4
$161K
HurricaneLow59.4
$146K
Heat waveVery Low33.5
$123K
LightningLow33.6
$94K
WildfireVery Low25.8
$8K
Winter weatherVery Low10.9
$6K
LandslideVery Low23.9
$127

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very high and community resilience is very high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Seneca County. 2020s bar runs to November 2026.

By type

Flood2
Hurricane2
Snowstorm1
Fire1
Severe Ice Storm1
Severe Storm1

Most recent

Oct 1, 2018Severe Storms and FloodingMajor disaster
Oct 28, 2012Hurricane SandyEmergency
Sep 30, 2005Hurricane Katrina EvacuationEmergency
Aug 3, 2004Severe Storms and FloodingMajor disaster
May 12, 2003Ice StormMajor disaster
Sep 11, 2001Fires and ExplosionsMajor disaster
Mar 17, 1993Severe BlizzardEmergency
Jun 23, 1972Tropical Storm AgnesMajor disaster

New York also had 12 statewide declarations that did not name single counties.

Storm history since 1971

Tornado risk by county ›

The National Weather Service has logged 212 storm reports in Seneca County since 1971, with 0 deaths and 2 injuries and about $3.9 million in reported damage. The strongest on record here was an EF1 tornado on June 21, 2007 near Sheldrake.

1tornadoes
43hail reports, largest 1.75 inches
140damaging thunderstorm winds
27floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 21, 2007EF1Sheldrake0 / 0

Most damaging storms

DateTypeNearDamage
Aug 14, 2018Flash FloodLodi Station$1M
Jan 19, 1996Flash FloodCountywide$500K
Sep 6, 1998Thunderstorm WindWaterloo$250K
Apr 18, 2004Thunderstorm WindCountywide$200K
Oct 26, 2021Flash FloodSeneca Falls$150K
Aug 18, 2021Flash FloodOvid$140K

Source: NOAA Storm Events Database, county-based reports through Jul 18, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Hurricanes and tropical storms

Hurricane risk by county ›

Since 1876, 0 hurricanes and 4 tropical storms have passed within 65 miles of the center of Seneca County. The strongest was an unnamed storm in 1893, with top winds near 70 mph about 40 miles away.

0hurricanes
0major hurricanes (Category 3+)
4tropical storms
1933most recent: unnamed storm

Strongest storms nearby

DateStormStrengthClosest
Oct 14, 1893UnnamedTropical storm, 70 mph40 mi
Sep 17, 1903UnnamedTropical storm, 50 mph53 mi
Sep 18, 1876UnnamedTropical storm, 50 mph55 mi
Aug 24, 1933UnnamedTropical storm, 45 mph52 mi

Most recent storms

DateStormStrengthClosest
Aug 24, 1933UnnamedTropical storm, 45 mph52 mi
Sep 17, 1903UnnamedTropical storm, 50 mph53 mi
Oct 14, 1893UnnamedTropical storm, 70 mph40 mi
Sep 18, 1876UnnamedTropical storm, 50 mph55 mi

Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.

Flood insurance in Seneca County

Check your address flood zone ›
0.9%of homes have federal flood insurance (123 policies)
0%of homes in mapped high-risk flood zones are insured
$977,123paid on 108 flood claims since 1978
2018costliest year, with $443,722 paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Seneca County

$155,400median home value (New York $423,800, US $332,700)
1959median year homes were built (New York 1959, US 1980)
69%of homes built before 1980, before many modern wind, quake and flood building rules
9.9%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 16,194 housing units.

Compare in New York

All 62 ›
Largest countiesOverall riskTop hazard
Kings CountyHighInland flooding
Queens CountyHighInland flooding
New York CountyHighInland flooding
Suffolk CountyHighInland flooding
Bronx CountyHighInland flooding
Nassau CountyHighInland flooding
Westchester CountyHighInland flooding
Erie CountyHighInland flooding

Neighboring counties

CountyOverall riskDeclarations
Ontario CountyLow16
Tompkins CountyLow16
Wayne CountyLow13
Cayuga CountyLow15
Yates CountyLow17
Schuyler CountyVery Low11

Common questions about Seneca County

What is the biggest natural hazard in Seneca County?

Inland flooding has the highest expected yearly losses in Seneca County, about $7.6 million a year in FEMA's estimate. Drought is second at $461,790.

How many federal disasters has Seneca County had?

Seneca County has been included in 8 federal disaster or emergency declarations for natural events since 1972, including 5 major disasters. The most recent was Severe Storms and Flooding in October 2018.

Is Seneca County a high-risk place to live?

Its overall rating is Very Low, 55th highest of 62 in New York. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Seneca County?

Standard home insurance does not cover flooding. About 1 in 111 homes in Seneca County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Seneca County had?

NOAA records list 1 tornadoes in Seneca County since 1950. The strongest was an EF1 tornado on June 21, 2007 near Sheldrake. The weather service has also logged 43 hail reports and 27 floods here.

How many hurricanes have hit Seneca County?

NOAA's hurricane records show 0 hurricanes and 4 tropical storms passing within 65 miles of the center of Seneca County. The strongest was an unnamed storm in 1893, with winds near 70 mph.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.