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Polk County, Tennessee

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

Very Low overall risk
72nd of 95highest risk in Tennessee
$7Mexpected losses a year
21federal declarations
1 in 167homes with flood insurance
Photo: U.S. Geological Survey, public domain

Polk County, Tennessee has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 69% of US counties. It ranks 72nd of 95 counties in Tennessee. The costliest hazards here are inland flooding, tornadoes and strong wind. FEMA estimates about $6.8 million a year in expected losses, or roughly $389 per resident. Since 1974 it has been included in 21 federal disaster or emergency declarations for natural events (16 major disasters). The most recent was in February 2026 (severe winter storm). Fewer than 1 in 100 homes here carry federal flood insurance (56 policies). Since 1978, federal flood insurance has paid about $638,000 on 43 claims here.

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

Top risks in Polk County

$3.6 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.
$853,409 a yearExpected losses. Damaging events about once every 5 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.

Strong wind

Moderate
$640,649 a yearExpected losses. Damaging events about 4 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
HazardRatingScoreExpected loss a year
Inland floodingLow42.6
$4M
TornadoLow50.7
$853K
Strong windModerate69.1
$641K
EarthquakeLow70.8
$560K
Cold waveLow40.6
$453K
WildfireLow75.6
$187K
LightningLow50.9
$161K
LandslideModerate96.6
$159K
HailVery Low29.3
$77K
DroughtLow42.8
$58K
Heat waveVery Low18.7
$37K
HurricaneVery Low46.0
$34K
Ice stormLow31.7
$24K
Winter weatherVery Low16.9
$10K

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 low in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm12
Flood3
Winter Storm2
Tornado1
Snowstorm1
Fire1

Most recent

Feb 6, 2026Severe Winter StormMajor disaster
Jan 24, 2026Severe Winter StormEmergency
Apr 2, 2025Severe Storms, Straight-Line Winds, Tornadoes, and FloodingEmergency
Jun 17, 2024Severe Storms, Tornadoes, and FloodingMajor disaster
May 17, 2023Severe Storms, Straight-Line Winds, and TornadoMajor disaster
Apr 24, 2020Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Mar 16, 2012Severe Storms, Tornadoes, Straight-Line Winds AndMajor disaster
May 1, 2011Severe Storms, Tornadoes, Straight-Line Winds, and Associated FloodingMajor disaster
Sep 5, 2005Hurricane Katrina EvacuationEmergency
Oct 7, 2004Severe Storms and FloodingMajor disaster
Show all 21
May 8, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
Nov 3, 2001Tn - Chattanooga Fire Complex - 11/03/01Fire management
Apr 20, 1998Severe Storms, Tornadoes and FloodingMajor disaster
Jan 13, 1998Severe Storms and FloodingMajor disaster
Apr 2, 1997Severe Storms and TornadoesMajor disaster
Apr 14, 1994Extensive Rainfall and Flash FloodingMajor disaster
Feb 28, 1994Severe Winter Ice Storm,Flash FloodingMajor disaster
Mar 14, 1993Severe Snowfall, Winter StormEmergency
Jan 4, 1991Severe Storms & FloodingMajor disaster
Feb 27, 1990Severe Storms & FloodingMajor disaster
Apr 4, 1974TornadoesMajor disaster

Tennessee also had 1 statewide declarations that did not name single counties.

Storm history since 1966

Tornado risk by county ›

The National Weather Service has logged 276 storm reports in Polk County since 1966, with 4 deaths and 11 injuries and about $10.6 million in reported damage. The strongest on record here was an EF3 tornado on November 30, 2016 near Ocoee.

14tornadoes
47hail reports, largest 2.75 inches
204damaging thunderstorm winds
11floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Nov 30, 2016EF3Ocoee0 / 2
Apr 3, 1974F3–0 / 1
Feb 6, 1986F3–0 / 0
Apr 3, 1974F3–0 / 0
Dec 13, 1973F2–3 / 0

Most damaging storms

DateTypeNearDamage
May 6, 2003Flash FloodCountywide$4M
Feb 6, 1986Tornado–$3M
Mar 2, 2012TornadoPatty$1M
Apr 3, 1974Tornado–$250K
Dec 13, 1973Tornado–$250K
Mar 21, 1974Tornado–$250K

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 1975, 0 hurricanes and 3 tropical storms have passed within 65 miles of the center of Polk County, 3 of them since 1950. The strongest was Tropical Storm Zeta (2020), with top winds near 60 mph about 49 miles away.

0hurricanes
0major hurricanes (Category 3+)
3tropical storms
2024most recent: Helene

Strongest storms nearby

DateStormStrengthClosest
Oct 29, 2020ZetaTropical storm, 60 mph49 mi
Sep 23, 1975EloiseTropical storm, 55 mph59 mi
Sep 27, 2024HeleneTropical storm, 50 mph64 mi

Most recent storms

DateStormStrengthClosest
Sep 27, 2024HeleneTropical storm, 50 mph64 mi
Oct 29, 2020ZetaTropical storm, 60 mph49 mi
Sep 23, 1975EloiseTropical storm, 55 mph59 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 Polk County

Check your address flood zone ›
0.6%of homes have federal flood insurance (56 policies)
25%of homes in mapped high-risk flood zones are insured
$637,564paid on 43 flood claims since 1978
2003costliest year, with $222,191 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 Polk County

$169,900median home value (Tennessee $286,700, US $332,700)
1988median year homes were built (Tennessee 1987, US 1980)
40%of homes built before 1980, before many modern wind, quake and flood building rules
21.6%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; 9,064 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
Bradley CountyLow16
McMinn CountyLow14
Monroe CountyLow16
Murray County, GALow14
Cherokee County, NCLow14
Fannin County, GALow17

Common questions about Polk County

What is the biggest natural hazard in Polk County?

Inland flooding has the highest expected yearly losses in Polk County, about $3.6 million a year in FEMA's estimate. Tornado is second at $853,409.

How many federal disasters has Polk County had?

Polk County has been included in 21 federal disaster or emergency declarations for natural events since 1974, including 16 major disasters. The most recent was Severe Winter Storm in February 2026.

Is Polk County a high-risk place to live?

Its overall rating is Very Low, 72nd 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 Polk County?

Standard home insurance does not cover flooding. About 1 in 167 homes in Polk 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 Polk County had?

NOAA records list 14 tornadoes in Polk County since 1950. The strongest was an EF3 tornado on November 30, 2016 near Ocoee. The weather service has also logged 47 hail reports and 11 floods here.

How many hurricanes have hit Polk County?

NOAA's hurricane records show 0 hurricanes and 3 tropical storms passing within 65 miles of the center of Polk County. The strongest was Tropical Storm Zeta (2020), 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.