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Decatur County, Tennessee

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

Very Low overall risk
68th of 95highest risk in Tennessee
$8Mexpected losses a year
26federal declarations
1 in 53homes with flood insurance
Photo: U.S. Geological Survey, public domain

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

$2.7 million a yearExpected losses. Damaging events about 2 times a year.
  • 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.
$1.6 million a yearExpected losses. Damaging events about once every 185 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.

Cold wave

Moderate
$1.6 million a yearExpected losses. Damaging events about 2 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
HazardRatingScoreExpected loss a year
Inland floodingVery Low33.5
$3M
EarthquakeLow83.4
$2M
Cold waveModerate71.5
$2M
TornadoModerate66.7
$2M
Strong windLow48.7
$370K
Heat waveLow52.9
$298K
LightningLow38.0
$104K
HurricaneVery Low47.0
$39K
Ice stormVery Low24.3
$16K
DroughtVery Low29.3
$16K
HailVery Low6.4
$13K
Winter weatherVery Low13.0
$7K
WildfireVery Low13.3
$3K
LandslideVery Low46.9
$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

Severe Storm16
Tornado5
Flood2
Winter Storm2
Hurricane1

Most recent

Feb 6, 2026Severe Winter StormMajor disaster
Jan 24, 2026Severe Winter StormEmergency
Jun 19, 2025Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Apr 2, 2025Severe Storms, Straight-Line Winds, Tornadoes, and FloodingEmergency
May 17, 2023Severe Storms, Straight-Line Winds, and TornadoMajor disaster
Jan 14, 2022Severe Storms, Straight-Line Winds, and TornadoesMajor disaster
Dec 13, 2021Severe Storms, Straight-Line Winds, and TornadoesEmergency
May 8, 2021Severe Storms, Tornadoes, and FloodingMajor disaster
Jul 9, 2020Severe Storms, Straight-Line Winds, and FloodingMajor disaster
Dec 6, 2019Severe Storm and Straight-Line WindsMajor disaster
Show all 26
Apr 17, 2019Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Aug 13, 2014Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
May 9, 2011Severe Storms, Flooding, Tornadoes, and Straight-Line WindsMajor disaster
May 4, 2010Severe Storms, Flooding, Straight-Line Winds, and TornadoesMajor disaster
Aug 21, 2009Severe Storms and FloodingMajor disaster
Sep 5, 2005Hurricane Katrina EvacuationEmergency
May 8, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
Mar 20, 2003Severe Storms and FloodingMajor disaster
Apr 5, 2002Severe Storms and FloodingMajor disaster
May 12, 1999Severe Storms, Tornadoes and FloodingMajor disaster
Jan 19, 1999Severe Storms, Tornadoes and High WindsMajor disaster
Mar 7, 1997Heavy Rains, Tornadoes, Flooding, Hail, High WindsMajor disaster
Feb 28, 1994Severe Winter Ice Storm,Flash FloodingMajor disaster
May 7, 1979Severe Storms, Tornadoes & FloodingMajor disaster
Mar 22, 1975Severe Storms & FloodingMajor disaster
Apr 4, 1974TornadoesMajor disaster

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.

8tornadoes
57hail reports, largest 3 inches
91damaging thunderstorm winds
43floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Feb 24, 2011EF2Bible Hill0 / 0
Apr 24, 2010EF1Bible Hill0 / 0
Dec 11, 2021EF1Yellow Spgs0 / 0
Mar 27, 2017EF1Decaturville0 / 0
May 7, 1984F1–0 / 0

Most damaging storms

DateTypeNearDamage
May 1, 2010Flash FloodSugar Tree$4M
Oct 26, 2019Thunderstorm WindLiberty$3M
Feb 24, 2011TornadoBible Hill$2M
Apr 24, 2010TornadoBible Hill$1M
May 27, 2008Flash FloodParsons Scott Arpt$600K
Jul 15, 2009Flash FloodSugar 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.

0hurricanes
0major hurricanes (Category 3+)
4tropical storms
1957most recent: Audrey

Strongest storms nearby

DateStormStrengthClosest
Aug 21, 1888UnnamedTropical storm, 60 mph47 mi
Jun 28, 1957AudreyTropical storm, 40 mph48 mi
Aug 31, 1950BakerTropical storm, 40 mph65 mi
Jun 17, 1934UnnamedTropical storm, 40 mph60 mi

Most recent storms

DateStormStrengthClosest
Jun 28, 1957AudreyTropical storm, 40 mph48 mi
Aug 31, 1950BakerTropical storm, 40 mph65 mi
Jun 17, 1934UnnamedTropical storm, 40 mph60 mi
Aug 21, 1888UnnamedTropical storm, 60 mph47 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 ›
1.9%of homes have federal flood insurance (139 policies)
17.2%of homes in mapped high-risk flood zones are insured
$1.8 millionpaid on 111 flood claims since 1978
2019costliest year, with $1.5 million 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 Decatur County

$139,600median home value (Tennessee $286,700, US $332,700)
1984median year homes were built (Tennessee 1987, US 1980)
46%of homes built before 1980, before many modern wind, quake and flood building rules
21%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; 6,591 housing units.

Compare in Tennessee

All 95 ›
Largest countiesOverall riskTop hazard
Shelby CountyHighEarthquake
Davidson CountyHighInland flooding
Knox CountyModerateInland flooding
Hamilton CountyModerateInland flooding
Rutherford CountyModerateInland flooding
Williamson CountyModerateInland flooding
Montgomery CountyModerateInland flooding
Sumner CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Carroll CountyLow22
Henderson CountyLow25
Hardin CountyLow26
Wayne CountyLow25
Benton CountyVery Low20
Perry CountyVery Low22

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.