Sullivan County, New York
Natural disaster risk, federal disaster history and flood insurance facts.
Sullivan County, New York has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 78% of US counties. It ranks 24th of 62 counties in New York. The costliest hazards here are inland flooding, cold waves and tornadoes. FEMA estimates about $37 million a year in expected losses, or roughly $465 per resident. Since 1965 it has been included in 31 federal disaster or emergency declarations for natural events (21 major disasters). The most recent was in September 2021 (remnants of hurricane ida). Fewer than 1 in 100 homes here carry federal flood insurance (354 policies). Since 1978, federal flood insurance has paid about $16 million on 945 claims here, including $8.9 million for floods in 2006.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Sullivan County
- 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.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
- 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.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 86.6 | $27M | ||
| Cold wave | 78.8 | $3M | ||
| Tornado | 71.3 | $2M | ||
| Hurricane | 79.2 | $2M | ||
| Strong wind | 64.9 | $781K | ||
| Earthquake | 68.3 | $675K | ||
| Lightning | 75.3 | $564K | ||
| Heat wave | 40.8 | $222K | ||
| Hail | 35.2 | $138K | ||
| Winter weather | 64.0 | $98K | ||
| Ice storm | 53.3 | $92K | ||
| Wildfire | 29.5 | $13K | ||
| Landslide | 77.0 | $10K | ||
| Drought | 24.1 | $9K | ||
| Avalanche | 36.0 | $160 |
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 relatively moderate and community resilience is relatively moderate in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Sullivan County. 2020s bar runs to November 2026.
By type
Most recent
Show all 31
New York also had 12 statewide declarations that did not name single counties.
Storm history since 1957
Tornado risk by county ›The National Weather Service has logged 563 storm reports in Sullivan County since 1957, with 4 deaths and 18 injuries and about $208 million in reported damage. The strongest on record here was an F2 tornado on May 9, 1961.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| May 9, 1961 | F2 | – | 4 / 0 |
| Jun 9, 1972 | F2 | – | 2 / 0 |
| Apr 22, 2023 | EF2 | Jeffersonville | 0 / 0 |
| Nov 16, 1989 | F1 | – | 0 / 0 |
| Sep 28, 1996 | F1 | Monticello | 1 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Jun 27, 2006 | Flash Flood | North Portion | $100M |
| Nov 16, 1989 | Tornado | – | $25M |
| Aug 30, 2004 | Flash Flood | West Brookville | $20M |
| Sep 18, 2004 | Flash Flood | Countywide | $15M |
| Jul 23, 2008 | Flash Flood | Rockland | $15M |
| Apr 2, 2005 | Flash Flood | Countywide | $10M |
Source: NOAA Storm Events Database, county-based reports through Jul 28, 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 1863, 2 hurricanes and 9 tropical storms have passed within 65 miles of the center of Sullivan County, 4 of them since 1950. The strongest was an unnamed hurricane in 1893, with top winds near 80 mph about 63 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Aug 24, 1893 | Unnamed | Category 1, 80 mph | 63 mi |
| Oct 23, 1878 | Unnamed | Category 1, 80 mph | 36 mi |
| Aug 4, 2020 | Isaias | Tropical storm, 65 mph | 59 mi |
| Sep 16, 1903 | Unnamed | Tropical storm, 65 mph | 62 mi |
| Aug 29, 1893 | Unnamed | Tropical storm, 65 mph | 43 mi |
| Aug 28, 2011 | Irene | Tropical storm, 60 mph | 65 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Aug 4, 2020 | Isaias | Tropical storm, 65 mph | 59 mi |
| Aug 28, 2011 | Irene | Tropical storm, 60 mph | 65 mi |
| Sep 6, 1979 | David | Tropical storm, 45 mph | 57 mi |
| Sep 1, 1952 | Able | Tropical storm, 60 mph | 65 mi |
| Aug 29, 1949 | Unnamed | Tropical storm, 55 mph | 24 mi |
| Sep 16, 1903 | Unnamed | Tropical storm, 65 mph | 62 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 Sullivan County
Check your address flood zone ›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 Sullivan County
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; 49,994 housing units.
Compare in New York
All 62 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Kings County | Inland flooding | |
| Queens County | Inland flooding | |
| New York County | Inland flooding | |
| Suffolk County | Inland flooding | |
| Bronx County | Inland flooding | |
| Nassau County | Inland flooding | |
| Westchester County | Inland flooding | |
| Erie County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Orange County | 32 | |
| Ulster County | 33 | |
| Pike County, PA | 16 | |
| Wayne County, PA | 23 | |
| Delaware County | 35 |
Common questions about Sullivan County
What is the biggest natural hazard in Sullivan County?
Inland flooding has the highest expected yearly losses in Sullivan County, about $26.7 million a year in FEMA's estimate. Cold wave is second at $3.1 million.
How many federal disasters has Sullivan County had?
Sullivan County has been included in 31 federal disaster or emergency declarations for natural events since 1965, including 21 major disasters. The most recent was Remnants of Hurricane Ida in September 2021.
Is Sullivan County a high-risk place to live?
Its overall rating is Relatively Low, 24th 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 Sullivan County?
Standard home insurance does not cover flooding. About 1 in 125 homes in Sullivan 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 Sullivan County had?
NOAA records list 12 tornadoes in Sullivan County since 1950. The strongest was an F2 tornado on May 9, 1961. The weather service has also logged 119 hail reports and 85 floods here.
How many hurricanes have hit Sullivan County?
NOAA's hurricane records show 2 hurricanes and 9 tropical storms passing within 65 miles of the center of Sullivan County. The strongest was an unnamed hurricane in 1893, with winds near 80 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.