Marion County

Population 20,115 (2025) 344 sq mi

Property owners in Marion County have filed 10 federal flood insurance claims since 1978, 99th most of 120 counties in Kentucky.

Hazard fingerprint for Marion County Tornado: 45th percentile. Tropical: 20th percentile. Wildfire: 0th percentile. Flood: 64th percentile. Hail & wind: 47th percentile. Heat: 0th percentile. Cold: 28th percentile. Winter: 17th percentile. TORTROPFIREFLOODSEVEREHEATCOLDWINTER

Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed

2026
  • Tornado damage paths since 195012
  • Tropical cyclone tracks within 100 miles since 1851, wider where stronger3

At a glance

The record for Marion County in eight numbers. Each links to its section below.

Flood insurance claims

10

99th of 120 in Kentucky

$136,000 paid since 1979

Details

Tornadoes since 1950

12

45th of 120 in Kentucky

About as many as the typical Kentucky county

Details

Tropical cyclones within 50 mi

3

6th of 120 in Kentucky

None at hurricane strength since 1851

Details

Strongest tornado

EF3

December 11, 2021, 14.5 mile path

Strongest tropical cyclone

TS

Tropical storm (unnamed), 1888, 3.8 miles away

Federal disaster declarations

23

Most recent: Severe Winter Storm, 2026

Details

Costliest event since 1996

$250K

Lightning, August 7, 2018

Details

Tornadoes

About one every 6.3 years since 1950, one of them rated F3/EF3 or stronger.

Strongest

December 11, 2021

EF3, 14.5 mile path

450 yards wide; 1 killed along the whole path.

Most recent

Tuesday, July 18, 2023

EF0, 0.1 mile path

3 years ago.

Tornadoes by decade Doppler radar era² 1950s: 0 1960s: 0 1970s: 2 2 1980s: 0 1990s: 1 1 2000s: 2 2 2010s: 3 3 2020s: 4 4 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 2 2 F: 0 M: 1 A: 0 M: 1 J: 1 J: 1 A: 0 S: 0 O: 2 N: 2 D: 2 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes in Marion County since 1950
Jul 18, 2023EF00.12000
Jan 1, 2022EF10.35000
Dec 11, 2021EF11.95000
Dec 11, 2021EF314.5450311
Nov 5, 2018EF02.06000
Jun 23, 2017EF12.110000
Jan 30, 2013EF00.15020
Oct 18, 2007EF00.82000
Nov 9, 2000F10.37000
Mar 28, 1997F23.030000
Oct 1, 1977F14.730000
May 25, 1973F10.11020
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Marion County: 0.
  2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Hurricanes and tropical storms

3 passed within 50 miles since 1851; none at hurricane strength.

Strongest within 50 miles

August 21, 1888

Unnamed storm, Tropical storm

3.8 miles at closest approach, winds near 53 mph.

Most recent

September 27, 2024

Helene, Remnant low

14.5 miles at closest approach.

Every storm within 100 miles

Tropical cyclones within 100 miles
Helene202414.5Remnant low46Category 4
Opal199540.3Tropical storm40Category 4
Frederic197941.4Tropical storm40Category 4
Audrey195730.0Tropical storm41Category 3
Unnamed191556.1Post-tropical40Category 4
Unnamed18922.2Post-tropical48Tropical storm
Unnamed18883.8Tropical storm53Category 3
  1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Wildfire and smoke

No large wildfire has been mapped here since satellite mapping began in 1984.

Smoke overhead

Smokiest year

2023: 54 days

Heavy smoke on 13 days in 2023, the most of any year.

Last 10 years

14.9 days a year

Medium or heavy smoke, 2016 to 2025.

2025

10 days

Medium or heavy smoke. 32 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 5 2012: 5 2013: 4 2014: 3 2015: 5 2016: 2 2017: 2 2018: 5 2019: 7 2020: 11 2021: 34 2022: 12 2023: 54 54 2024: 12 2025: 10 201120122013201420152016201720182019202020212022202320242025
Days each year on which a satellite-traced plume of medium or heavy smoke covered the county’s population centre, 2011 to 2025.
  1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Floods and flood insurance

10 federal flood insurance claims since 1979, with $136,000 paid.

Federal flood insurance claims by year
Claims per year since 1979. Years with fewer than five claims are not shown.

Claims by ZIP code

Flood insurance claims by ZIP code
400336$7,925

Flood events since 1996

  • Flash Flood31
  • Flood10

1 death recorded in flood events since 1996.

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

Drought

In severe drought or worse for 146 of 1,581 months since 1895 (9%); the longest spell lasted 17 months.

146

Months in severe drought or worse since 1895

46

Months in extreme drought

9%

Share of all months, severe or worse

Lowest reading

January 1931

−6.01, extreme drought

Longest severe spell

17 months

July 1930 to November 1931.

Latest month

September 2026

+1.03, slightly wet

Last severe month: April 2006.

Months in severe drought or worse, by year 1895: 2 1896: 4 1897: 0 1898: 0 1899: 2 1900: 5 1901: 6 1902: 7 1903: 0 1904: 3 1905: 4 1906: 0 1907: 0 1908: 1 1909: 1 1910: 0 1911: 0 1912: 0 1913: 3 1914: 3 1915: 0 1916: 0 1917: 0 1918: 0 1919: 0 1920: 0 1921: 0 1922: 0 1923: 0 1924: 0 1925: 0 1926: 0 1927: 0 1928: 0 1929: 0 1930: 6 1931: 11 1932: 0 1933: 0 1934: 0 1935: 0 1936: 5 1937: 0 1938: 0 1939: 0 1940: 2 1941: 12 12 1942: 5 1943: 2 1944: 10 1945: 0 1946: 0 1947: 0 1948: 0 1949: 0 1950: 0 1951: 0 1952: 3 1953: 7 1954: 12 1955: 1 1956: 0 1957: 0 1958: 0 1959: 0 1960: 0 1961: 0 1962: 0 1963: 0 1964: 0 1965: 0 1966: 0 1967: 0 1968: 0 1969: 0 1970: 0 1971: 0 1972: 0 1973: 0 1974: 0 1975: 0 1976: 0 1977: 0 1978: 0 1979: 0 1980: 0 1981: 1 1982: 0 1983: 0 1984: 0 1985: 0 1986: 0 1987: 2 1988: 2 1989: 0 1990: 0 1991: 0 1992: 0 1993: 0 1994: 0 1995: 0 1996: 0 1997: 0 1998: 0 1999: 5 2000: 9 2001: 4 2002: 0 2003: 0 2004: 0 2005: 2 2006: 4 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 2020: 0 2021: 0 2022: 0 2023: 0 2024: 0 2025: 0 18951905191519251935194519551965197519851995200520152025
Months each year with a Palmer index of −3 or lower, 1895 to 2025. Twelve means the whole year.
  1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Earthquakes and landslides

14 earthquakes of magnitude 2.5 or more within 50 miles since 1980; none reached magnitude 4.

0

Magnitude 2.5+ inside the county since 1973

3

Magnitude 3+ within 50 miles since 1973

0

Magnitude 4+ within 50 miles since 1900

0

Magnitude 5+ within 50 miles since 1900

Largest within 50 miles

June 4, 1987

Magnitude 3.1

9 km SW of Shepherdsville, Kentucky; 25.9 miles away, 4.7 miles deep.

Most recent, magnitude 3 or more

December 28, 2025

Magnitude 3.1

11 km ENE of Lancaster, Kentucky; 31.4 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 0 1974: 0 1975: 0 1976: 0 1977: 0 1978: 0 1979: 0 1980: 1 1 1981: 0 1982: 0 1983: 0 1984: 0 1985: 0 1986: 0 1987: 1 1988: 0 1989: 0 1990: 0 1991: 0 1992: 0 1993: 0 1994: 0 1995: 0 1996: 0 1997: 0 1998: 0 1999: 0 2000: 0 2001: 0 2002: 0 2003: 0 2004: 0 2005: 0 2006: 0 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 2020: 0 2021: 0 2022: 0 2023: 0 2024: 0 2025: 1 19731978198319881993199820032008201320182023
Per year, 1973 to 2025.
  1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
  2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Mapped landslides

5

Landslides mapped, probable or better

2

With a recorded date

1

Source inventory

Mapped by KY GS (5).

  1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

Severe weather and other events

256 events in the National Weather Service record, 221 of them since 1996.

26

Hail reports, 1 inch or larger

2

Hail, 2 inches or larger

105

Damaging gusts, 58 mph+

25

Winter weather events since 1996

0

Heat events since 1996

5

Cold events since 1996

Largest hail

May 1, 2002

4.50 inches

Strongest measured or estimated gust

May 6, 2002

92 mph

More event types since 1996

Other Storm Events types since 1996
Lightning100Aug 7, 2018
Debris flows100Apr 5, 2025

Costliest events since 1996

  1. Aug 7, 2018Lightning$250,000
    National Weather Service narrative

    There was a large house fire caused be lightning.

  2. Jun 23, 2017Tornado$150,000
    National Weather Service narrative

    This tornado spun up in a broader area of 40-60 mph winds that caused minor tree damage across an area over a mile wide in western Marion County. The tornado touched down on the edge of a large wooded area west of Highway 527 0.4 miles south of St Francis. Moving due east, it snapped the trunks of several large trees, blocking the highway, and mowed down a line of trees along Louis Mattingly Road. It continued to to tree-top damage in a heavily wooded area as it moved east, then tore roof panels off several hog barns on the south end of A. Mills Road. Drone footage of corn near the barns showed multiple streaks of converging winds in an area approximately 100 yards in width.…

  3. Nov 18, 2003Thunderstorm Wind$100,000
    National Weather Service narrative

    The sides of a large industrial storage building were blown in. A barn was blown down on Radio Station Road.

  4. Nov 9, 2000Tornado$100,000
    National Weather Service narrative

    A fairly new barn was blown down. In the vicinity, the roof of a garage was collapsed, and the garage door was wrapped around the back of the car inside. Three mobile homes were damaged and one was demolished.

  5. May 1, 2002Hail$100,000
  6. Oct 19, 2007Tornado$100,000
    National Weather Service narrative

    The tornado touched down about three quarters of a mile southwest of Bradfordsville near the intersection of Bradfordsville and Thornton Roads. A mobile home was rolled over and two homes suffered shingle damage. An outbuilding also sustained minor damage, and several small trees were downed. From here, the tornado moved east-northeast into Bradfordsville, doing significant tree damage, snapping power poles, and destroying several outbuildings, one of which collapsed onto a speedboat. When the tornado lifted, the parent thunderstorm continued to cause extensive tree damage on the eastern side of Bradfordsville. Structural and tree damage from the tornado was consistent with an EF-0 tornado.

  7. Feb 15, 2003Ice Storm, Marion$80,000
    National Weather Service narrative

    Light to occasionally moderate freezing rain began on the evening of the 15th, and continued through the evening of the 16th. Reports of ice accumulations of an inch were common along and north of Interstate 64, from Frankfort to Winchester. The hardest hit areas were in and around the cities of Frankfort and Lexington, where up to an inch and a quarter of ice accumulation was observed. A 78 year old male in Lawrenceburg in Anderson County died of injuries sustained when he was struck by a falling, ice covered, tree limb. After the storm, it is estimated that nearly 125,000 residents were without power for up to five days or more. Most of the property damage was reported in the…

  8. Nov 9, 2000High Wind, Marion$75,000
    National Weather Service narrative

    A line of thunderstorms was set off by a cold front earlier in the afternoon. That evening, there were strong gradient winds over Central Kentucky in the wake of the front. Three miles west of Lebanon, in Marion County, a mobile home was destroyed by winds, and five or six others were blown off their foundations.

  9. Feb 6, 2008Thunderstorm Wind$50,000
    National Weather Service narrative

    A cold front along with a strong upper level low produced a squall line that crossed central Kentucky. This set off widespread severe weather, and spawned several tornadoes.

  10. May 6, 2002Thunderstorm Wind$50,000
  1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

Weather records

No weather station within 40 miles has the 30 years of complete, current records this section needs.

Federal disaster declarations

23 since 1953. The most recent: Severe Winter Storm, January 24, 2026.

Federal disaster declarations
Jan 24, 2026Winter StormSevere Winter StormEmergencyEM-3633-KY
Apr 24, 2025Severe StormSevere Storms, Straight-Line Winds, Tornadoes, Flooding, Landslides, and MudslidesMajor disasterDR-4864-KY
Apr 3, 2025Severe StormSevere Storms, Straight-Line Winds, Tornadoes, and FloodingEmergencyEM-3626-KY
Feb 16, 2025Severe StormSevere Storms, Straight-Line Winds, Flooding, and LandslidesEmergencyEM-3624-KY
Apr 10, 2023Severe StormSevere Storms, Straight-Line Winds, Tornadoes, Flooding, Landslides, and MudslidesMajor disasterDR-4702-KY
Dec 12, 2021TornadoSevere Storms, Straight-Line Winds, Flooding, and TornadoesMajor disasterDR-4630-KY
Apr 23, 2021FloodSevere, Storms, Flooding, Landslides, and MudslidesMajor disasterDR-4595-KY
Mar 31, 2021Severe Ice StormSevere Winter Storms, Landslides, and MudslidesMajor disasterDR-4592-KY
Mar 28, 2020BiologicalCovid-19 PandemicMajor disasterDR-4497-KY
Mar 13, 2020BiologicalCovid-19EmergencyEM-3469-KY
Apr 17, 2019Severe StormSevere Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disasterDR-4428-KY
May 4, 2011Severe StormSevere Storms, Tornadoes, and FloodingMajor disasterDR-1976-KY
May 11, 2010Severe StormSevere Storms, Flooding, Mudslides, and TornadoesMajor disasterDR-1912-KY
Feb 5, 2009Severe Ice StormSevere Winter Storm and FloodingMajor disasterDR-1818-KY
Jan 28, 2009Severe Ice StormSevere Winter StormEmergencyEM-3302-KY
Sep 10, 2005HurricaneHurricane KatrinaEmergencyEM-3231-KY
May 7, 2002Severe StormSevere Storms, Tornadoes and FloodingMajor disasterDR-1414-KY
Mar 4, 1997Severe StormSevere Storm, Flooding, and TornadoesMajor disasterDR-1163-KY
Jan 13, 1996SnowstormBlizzard of 96Major disasterDR-1089-KY
Mar 16, 1994SnowstormSevere Weather, Freezing Rain, Sleet, SnwMajor disasterDR-1018-KY
Mar 16, 1993SnowstormSevere Snowfall & Winter StormEmergencyEM-3104-KY
May 15, 1984Severe StormHigh Winds, Tornadoes & FloodingMajor disasterDR-705-KY
Jun 5, 1970FloodSevere Storms & FloodingMajor disasterDR-288-KY

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

How this compares

Where Marion County stands among 120 counties in Kentucky and 3,143 in the United States.

Ranks
Tornadoes since 19501245 / 1202,080 / 3,143
Tornadoes rated F3/EF3 or stronger155 / 1201,281 / 3,143
Tropical cyclones within 50 mi36 / 1201,131 / 3,143
Hurricane-strength passes within 50 mi0——
Wildfire acres since 19840——
Flood insurance claims1099 / 1202,332 / 3,143
Flood insurance paid$136,000102 / 1202,260 / 3,143
Disaster declarations2387 / 1201,054 / 3,143
Flood events since 19964192 / 1201,698 / 3,143
Hail and wind events since 199613992 / 1202,471 / 3,143
Winter storm events since 199625106 / 1202,528 / 3,143
Reported damage since 1996$1.5 million115 / 1202,864 / 3,143
River crests at major flood stage0——
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 189514622 / 1201,041 / 3,143
Medium or heavy smoke days a year, last 10 years14.945 / 1201,615 / 3,143
Earthquakes M4+ within 50 mi since 19000——
Earthquakes M2.5+ in the county since 19730——

Neighbouring counties

Neighbouring counties
Boyle County123015
Casey County73024
Larue County142021
Nelson County1220122
Taylor County13308
Washington County102032

Sources and vintage

Every number on this page comes from these public records.

  • Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
  • Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
  • Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
  • Storm events NOAA NCEI Storm Events Database, through 2026.
  • Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
  • Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
  • Weather records NOAA NCEI Global Historical Climatology Network Daily.
  • River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
  • Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
  • Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
  • Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
  • Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.