Decatur County, Tennessee
Natural disaster risk, federal disaster history and flood insurance facts.
Decatur County, Tennessee has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 62% of US counties. It ranks 68th of 95 counties in Tennessee. The costliest hazards here are inland flooding, earthquakes and cold waves. FEMA estimates about $8.4 million a year in expected losses, or roughly $731 per resident. Since 1974 it has been included in 26 federal disaster or emergency declarations for natural events (22 major disasters). The most recent was in February 2026 (severe winter storm). About 1 in 53 homes here carry federal flood insurance (139 policies). Since 1978, federal flood insurance has paid about $1.8 million on 111 claims here, including $1.5 million for floods in 2019.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Decatur 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.
- Ask whether an older house is bolted to its foundation.
- Consider separate earthquake insurance where risk is high.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 33.5 | $3M | ||
| Earthquake | 83.4 | $2M | ||
| Cold wave | 71.5 | $2M | ||
| Tornado | 66.7 | $2M | ||
| Strong wind | 48.7 | $370K | ||
| Heat wave | 52.9 | $298K | ||
| Lightning | 38.0 | $104K | ||
| Hurricane | 47.0 | $39K | ||
| Ice storm | 24.3 | $16K | ||
| Drought | 29.3 | $16K | ||
| Hail | 6.4 | $13K | ||
| Winter weather | 13.0 | $7K | ||
| Wildfire | 13.3 | $3K | ||
| Landslide | 46.9 | $788 |
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 relatively moderate in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Decatur County. 2020s bar runs to November 2026.
By type
Most recent
Show all 26
Tennessee also had 1 statewide declarations that did not name single counties.
Storm history since 1975
Tornado risk by county ›The National Weather Service has logged 202 storm reports in Decatur County since 1975, with 0 deaths and 3 injuries and about $12 million in reported damage. The strongest on record here was an EF2 tornado on February 24, 2011 near Bible Hill.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Feb 24, 2011 | EF2 | Bible Hill | 0 / 0 |
| Apr 24, 2010 | EF1 | Bible Hill | 0 / 0 |
| Dec 11, 2021 | EF1 | Yellow Spgs | 0 / 0 |
| Mar 27, 2017 | EF1 | Decaturville | 0 / 0 |
| May 7, 1984 | F1 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| May 1, 2010 | Flash Flood | Sugar Tree | $4M |
| Oct 26, 2019 | Thunderstorm Wind | Liberty | $3M |
| Feb 24, 2011 | Tornado | Bible Hill | $2M |
| Apr 24, 2010 | Tornado | Bible Hill | $1M |
| May 27, 2008 | Flash Flood | Parsons Scott Arpt | $600K |
| Jul 15, 2009 | Flash Flood | Sugar Tree | $300K |
Source: NOAA Storm Events Database, county-based reports through Jul 26, 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 1888, 0 hurricanes and 4 tropical storms have passed within 65 miles of the center of Decatur County, 2 of them since 1950. The strongest was an unnamed storm in 1888, with top winds near 60 mph about 47 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Aug 21, 1888 | Unnamed | Tropical storm, 60 mph | 47 mi |
| Jun 28, 1957 | Audrey | Tropical storm, 40 mph | 48 mi |
| Aug 31, 1950 | Baker | Tropical storm, 40 mph | 65 mi |
| Jun 17, 1934 | Unnamed | Tropical storm, 40 mph | 60 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Jun 28, 1957 | Audrey | Tropical storm, 40 mph | 48 mi |
| Aug 31, 1950 | Baker | Tropical storm, 40 mph | 65 mi |
| Jun 17, 1934 | Unnamed | Tropical storm, 40 mph | 60 mi |
| Aug 21, 1888 | Unnamed | Tropical storm, 60 mph | 47 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 Decatur 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 Decatur 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; 6,591 housing units.
Compare in Tennessee
All 95 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Shelby County | Earthquake | |
| Davidson County | Inland flooding | |
| Knox County | Inland flooding | |
| Hamilton County | Inland flooding | |
| Rutherford County | Inland flooding | |
| Williamson County | Inland flooding | |
| Montgomery County | Inland flooding | |
| Sumner County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Carroll County | 22 | |
| Henderson County | 25 | |
| Hardin County | 26 | |
| Wayne County | 25 | |
| Benton County | 20 | |
| Perry County | 22 |
Common questions about Decatur County
What is the biggest natural hazard in Decatur County?
Inland flooding has the highest expected yearly losses in Decatur County, about $2.7 million a year in FEMA's estimate. Earthquake is second at $1.6 million.
How many federal disasters has Decatur County had?
Decatur County has been included in 26 federal disaster or emergency declarations for natural events since 1974, including 22 major disasters. The most recent was Severe Winter Storm in February 2026.
Is Decatur County a high-risk place to live?
Its overall rating is Very Low, 68th highest of 95 in Tennessee. 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 Decatur County?
Standard home insurance does not cover flooding. About 1 in 53 homes in Decatur 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 Decatur County had?
NOAA records list 8 tornadoes in Decatur County since 1950. The strongest was an EF2 tornado on February 24, 2011 near Bible Hill. The weather service has also logged 57 hail reports and 43 floods here.
How many hurricanes have hit Decatur County?
NOAA's hurricane records show 0 hurricanes and 4 tropical storms passing within 65 miles of the center of Decatur County. The strongest was an unnamed storm in 1888, with winds near 60 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.