County Hazards

States › Kentucky › Knox County

Knox County, Kentucky

Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.

FIPS 21121 · 29,909 residents (2021) · 386 sq mi · dominant hazard Wind

Hail · 50Tornado · 3Flood · 89Wind · 162Winter · 60
1980-04-08: Hail1985-06-04: Hail1989-04-28: Hail1989-08-18: Hail1998-04-16: Hail1998-06-05: Hail1998-06-05: Hail2002-05-02: Hail2002-04-28: Hail2002-06-04: Hail2003-02-22: Hail2003-04-25: Hail2003-07-23: Hail2003-07-23: Hail2004-05-10: Hail2004-06-02: Hail2005-03-31: Hail2005-08-05: Hail2006-01-02: Hail2006-04-19: Hail2006-04-19: Hail2006-04-19: Hail2006-10-11: Hail2007-06-15: Hail2007-06-15: Hail2007-06-15: Hail2007-06-15: Hail2007-07-24: Hail2009-02-18: Hail2009-05-08: Hail2009-06-02: Hail2010-05-14: Hail2012-03-15: Hail2012-03-15: Hail2012-04-26: Hail2012-04-26: Hail2012-02-29: Hail2018-06-26: Hail2021-04-08: Hail2022-05-19: Hail2023-08-07: Hail2024-09-24: Hail2024-09-24: Hail2025-05-08: Hail2025-05-08: Hail2025-05-08: Hail2025-05-08: Hail2004-05-31: Tornado2004-05-31: Tornado2024-05-26: Tornado2007-03-02: Flood2008-07-28: Flood2008-07-28: Flood2009-01-07: Flood2009-07-26: Flood2009-01-07: Flood2009-06-11: Flood2009-05-04: Flood2009-05-04: Flood2009-05-04: Flood2009-08-04: Flood2009-08-04: Flood2010-01-24: Flood2010-01-24: Flood2010-11-30: Flood2011-07-30: Flood2011-04-27: Flood2011-06-20: Flood2011-06-20: Flood2011-06-20: Flood2011-06-20: Flood2011-06-20: Flood2011-06-20: Flood2011-11-28: Flood2013-08-10: Flood2013-08-11: Flood2013-04-17: Flood2013-04-17: Flood2015-02-22: Flood2015-02-22: Flood2015-07-14: Flood2015-07-14: Flood2015-07-14: Flood2015-04-07: Flood2015-04-07: Flood2015-04-07: Flood2015-12-25: Flood2017-05-27: Flood2017-04-11: Flood2018-02-10: Flood2018-08-18: Flood2018-08-18: Flood2018-08-08: Flood2019-07-18: Flood2019-07-07: Flood2019-02-20: Flood2019-02-20: Flood2019-02-23: Flood2020-05-05: Flood2020-02-06: Flood2020-02-05: Flood2021-02-27: Flood2021-02-28: Flood2022-02-03: Flood2022-02-03: Flood2022-02-04: Flood2022-02-04: Flood2022-05-06: Flood1974-04-04: Wind1977-07-21: Wind1983-07-03: Wind1986-02-06: Wind1986-02-06: Wind1990-08-21: Wind1990-08-21: Wind1991-04-09: Wind1991-07-12: Wind1991-07-02: Wind1992-07-30: Wind1998-06-22: Wind1998-06-22: Wind1999-01-18: Wind2000-04-20: Wind2000-08-09: Wind2000-12-16: Wind2000-11-09: Wind2001-06-25: Wind2001-07-04: Wind2001-07-04: Wind2001-07-08: Wind2001-10-24: Wind2002-05-13: Wind2002-05-17: Wind2002-11-10: Wind2003-05-15: Wind2003-05-15: Wind2003-05-17: Wind2004-05-26: Wind2004-05-26: Wind2004-05-27: Wind2004-05-30: Wind2004-05-31: Wind2004-05-31: Wind2004-07-13: Wind2004-10-19: Wind2004-10-19: Wind2005-04-22: Wind2005-05-19: Wind2006-01-02: Wind2006-04-19: Wind2006-04-02: Wind2006-04-02: Wind2006-07-04: Wind2006-07-20: Wind2006-07-20: Wind2006-07-21: Wind2006-07-21: Wind2006-07-21: Wind2006-06-22: Wind2006-08-03: Wind2006-07-20: Wind2006-06-22: Wind2006-08-10: Wind2007-06-24: Wind2007-04-03: Wind2008-07-28: Wind2008-07-28: Wind2008-07-28: Wind2008-07-22: Wind2008-01-29: Wind2008-07-28: Wind2008-06-10: Wind2009-08-04: Wind2009-06-16: Wind2009-06-16: Wind2010-06-01: Wind2010-09-11: Wind2010-08-13: Wind2010-08-05: Wind2011-05-22: Wind2011-04-04: Wind2011-04-04: Wind2011-05-24: Wind2011-05-24: Wind2011-04-04: Wind2011-05-24: Wind2011-02-28: Wind2011-02-28: Wind2011-04-09: Wind2011-06-20: Wind2011-08-08: Wind2011-08-08: Wind2011-08-08: Wind2011-06-21: Wind2011-04-04: Wind2012-07-19: Wind2012-07-19: Wind2012-07-19: Wind2012-02-29: Wind2013-06-13: Wind2013-01-30: Wind2013-07-17: Wind2014-06-10: Wind2014-06-10: Wind2014-08-20: Wind2014-05-21: Wind2014-05-13: Wind2014-02-21: Wind2015-06-08: Wind2015-07-14: Wind2016-05-07: Wind2016-04-27: Wind2016-06-23: Wind2016-06-23: Wind2016-07-07: Wind2016-07-08: Wind2017-05-27: Wind2017-07-06: Wind2017-07-06: Wind2018-04-03: Wind2018-05-31: Wind2019-06-28: Wind2020-03-29: Wind
Knox County within Kentucky. Dots: HailTornadoFloodWind event locations in the kept record. Boundaries: US Census Bureau.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. NCEI storm records through 30 Jun 2026; OpenFEMA declarations refreshed 29 Sep 2026; NFIP claims as of 8 Sep 2026.

Knox County, Kentucky, has 398 weather events in the NCEI Storm Events record since 1950, most of them damaging wind.

That is 103.0 events per 100 square miles, below the Kentucky figure of 140.0, and 133.1 per 10,000 residents against 122.6 statewide.

3 events fall in the 12 months to 30 Jun 2026. NCEI attributes 4 deaths and 8 injuries to events in the county, with property damage estimated at $10.0M and crop damage at $95K.

FEMA has designated the county in 39 federal disaster declarations since 1953; the most recent is Severe Winter Storm (emergency, 24 Jan 2026).

National Flood Insurance Program policyholders in the county filed 120 claims since 1978, of which 86 were paid, totalling $892K (about $10K per paid claim). FEMA counts 77 residential flood policies in force.

FEMA's National Risk Index rates the county's overall risk as "Relatively Low" and its expected annual loss as "Relatively Low" ($20M a year across 18 hazards).

6 tropical storm or hurricane tracks in the HURDAT2 record passed within 100 miles of the county's centre at tropical-storm strength or more, 0 of them within 50 miles at hurricane strength.

3events, last 12 monthsto 30 Jun 2026
398events since 19504 deaths, 8 injuries recorded
39disaster declarationslast 24 Jan 2026
120NFIP flood claims$892K paid

Compared with Kentucky and the United States

MeasureKnox CountyKentuckyUS
Recorded events since 195039855,2851,977,440
Events per 100 square miles103.0140.056.0
Events per 10,000 residents133.1122.659.6
Events in the last 12 months31,25462,008
Deaths recorded by NCEI459926,435
Property damage (NCEI estimates)$10.0M$3.5B$575B
NFIP claims per 1,000 residents4.06.28.1
Average paid NFIP claim$10K$22K$43K
Claims per 100 policies in force, last 10 years31.237.316.1

County-recorded events plus zone-recorded events whose forecast zone is named for the county. State and US rows include events recorded only by forecast zone. Rates use 2021 Census population and land area.

Events by decade

Wind: 2
Hail: 4Wind: 3
Hail: 6Flood: 7Wind: 10Winter: 6
Hail: 24Tornado: 2Flood: 36Wind: 55Winter: 16Cold: 3Other: 1
Hail: 7Flood: 36Wind: 49Winter: 28Heat: 7Cold: 9Drought: 3Lightning: 1Fog: 1Other: 4
Hail: 9Tornado: 1Flood: 10Wind: 43Winter: 10Cold: 1Other: 4
01950s01960s21970s71980s291990s1372000s1452010s782020s
Recorded events in Knox County by decade and hazard group. HailTornadoFloodWindWinterHeatColdDroughtLightningFogOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 286 events in the 20 years to 2025 against 105 in the 20 years before. Reporting practice changed in 1996 and again with automated reports in the 2000s, so decade totals measure the record as much as the weather.

Events by type

Wind162
Flood89
Winter60
Hail50
Cold13
Other9
Heat7
Tornado3
Drought3
Lightning1
Fog1
HazardEventsDeathsShare of state's events
■ Wind162—0.7%detail
■ Flood8921.1%detail
■ Winter6010.7%detail
■ Hail50—0.8%detail
■ Cold1310.6%
■ Other9—0.9%
■ Heat7—0.3%
■ Tornado3—0.2%
■ Drought3—0.3%
■ Lightning1—0.4%
■ Fog1—0.1%

Hazard pages exist for hail, tornado, flood, wind and winter where the county has at least 10 recorded events. "Other" covers heavy rain, debris flow, dust, funnel clouds and similar reports.

Largest recorded events

DateEvent typeGroupMagnitudeProperty damageCrop damageDeathsInjuriesGeography
2 Jan 2014Winter WeatherWinter———11Forecast zone
17 Sep 2004FloodFlood—$103K—1—Forecast zone
20 Jun 2011Flash FloodFlood—$25K—1—County
19 Feb 2015Extreme Cold/Wind ChillCold———1—Forecast zone
15 Mar 2012Heavy RainOther—$20K——6County
2 Jan 2014Winter WeatherWinter————1Forecast zone
20 Jun 2011Flash FloodFlood—$3.0M———County
6 Feb 2020FloodFlood—$2.5M———County
16 Feb 2003FloodFlood—$2.3M———Forecast zone
17 Apr 2013Flash FloodFlood—$760K———County
26 May 2024TornadoTornadoEF1$200K$10K——County
3 Apr 2007Thunderstorm WindWind67 mph$100K———County
28 Jul 2008Thunderstorm WindWind69 mph$100K———County

Ranked by deaths, then injuries, then NCEI's damage estimate. Deaths and injuries are NCEI counts (direct plus indirect); no personal details are recorded here.

Federal disaster declarations

DeclaredNumberTypeIncidentTitlePrograms
24 Jan 2026EM-3633EmergencyWinter StormSevere Winter StormPublic assistance
23 May 2025DR-4875Major disasterSevere StormSevere Storms, Straight-Line Winds, And TornadoesPublic assistance
3 Apr 2025EM-3626EmergencySevere StormSevere Storms, Straight-Line Winds, Tornadoes, And FloodingPublic assistance
24 Feb 2025DR-4860Major disasterSevere StormSevere Storms, Straight-Line Winds, Flooding, Landslides, And MudslidesPublic assistance
16 Feb 2025EM-3624EmergencySevere StormSevere Storms, Straight-Line Winds, Flooding, And LandslidesPublic assistance
23 Jul 2024DR-4804Major disasterSevere StormSevere Storms, Straight-Line Winds, Tornadoes, Landslides, And MudslidesIndividual assistance, Public assistance
23 Apr 2021DR-4595Major disasterFloodSevere, Storms, Flooding, Landslides, And MudslidesPublic assistance
24 Apr 2020DR-4540Major disasterSevere StormSevere Storms, Flooding, Landslides, And MudslidesPublic assistance
28 Mar 2020DR-4497Major disasterBiologicalCovid-19 PandemicIndividual assistance, Public assistance
13 Mar 2020EM-3469EmergencyBiologicalCovid-19Public assistance
17 Apr 2019DR-4428Major disasterSevere StormSevere Storms, Straight-Line Winds, Flooding, Landslides, And MudslidesPublic assistance
12 Apr 2018DR-4358Major disasterFloodSevere Storms, Flooding, Landslides, And MudslidesPublic assistance
20 Nov 2016FM-5166Fire management assistanceFireSoutheastern Kentucky Fire ComplexPublic assistance
12 May 2015DR-4218Major disasterFloodSevere Winter Storm, Snowstorm, Flooding, Landslides, And MudslidesPublic assistance
30 Apr 2015DR-4216Major disasterSnowstormSevere Winter Storms, Snowstorms, Flooding, Landslides, And MudslidesPublic assistance
25 Jul 2011DR-4008Major disasterSevere StormSevere Storms, Tornadoes, And FloodingIndividual assistance, Public assistance
10 Sep 2005EM-3231EmergencyHurricaneHurricane KatrinaPublic assistance
10 Jun 2004DR-1523Major disasterSevere StormSevere Storms, Tornadoes, Flooding, And MudslidesIndividual assistance, Public assistance
2 Jul 2003DR-1475Major disasterSevere StormSevere Storms, Flooding, Mud And Rock Slides, And TornadoesIndividual assistance, Public assistance
3 Jun 2003DR-1471Major disasterSevere StormSevere Storms, Flooding, Mud And Rock Slides, And TornadoesIndividual assistance
14 Mar 2003DR-1454Major disasterSevere StormSevere Winter Ice And Snow Storms, Heavy Rain, Flooding, Tornadoes, And Mud AndIndividual assistance, Public assistance
7 May 2002DR-1414Major disasterSevere StormSevere Storms, Tornadoes And FloodingIndividual assistance
4 Apr 2002DR-1407Major disasterSevere StormSevere Storms And FloodingIndividual assistance, Public assistance
2 Nov 2001FM-2385Fire management assistanceFireKy - Southeastern Fire Complex - 11/02/01Public assistance
4 Nov 2000FM-2349Fire management assistanceFireKy - Southeastern District Fire Complex - 11/03/00Public assistance
29 Apr 1998DR-1216Major disasterSevere StormSevere Storms, Tornadoes,And FloodingIndividual assistance, Public assistance
3 Mar 1998DR-1207Major disasterSevere StormSevere Winter StormPublic assistance
13 Jan 1996DR-1089Major disasterSnowstormBlizzard Of 96Public assistance
16 Mar 1994DR-1018Major disasterSnowstormSevere Weather, Freezing Rain, Sleet, SnwPublic assistance
16 Mar 1993EM-3104EmergencySnowstormSevere Snowfall & Winter StormPublic assistance
30 Oct 1989DR-846Major disasterFloodSevere Storms, Mudslides & FloodingIndividual assistance, Public assistance
30 Jun 1989DR-834Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
24 Feb 1989DR-821Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
15 May 1984DR-705Major disasterSevere StormHigh Winds, Tornadoes & FloodingIndividual assistance, Public assistance
6 Apr 1977DR-529Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
29 Mar 1975DR-461Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
5 Jun 1970DR-288Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
2 Feb 1970DR-282Major disasterFloodHeavy Snowmelt, Rains & FloodingIndividual assistance, Public assistance
27 Mar 1967DR-226Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance

Declarations in which FEMA designated this county, from the OpenFEMA Disaster Declarations Summaries (v2). DR: major disaster; EM: emergency; FM: fire management assistance. Programs show whether individual or public assistance was made available.

Flood insurance claims

197820022026
NFIP claims by year of loss in Knox County, 1978 to 2026 (hover for the amount paid).
Claims since 1978120
Paid claims86
Total paid$892K
Average paid claim$10K
Repetitive-loss properties71 severe
Residential policies in force770.8% of 10,187 structures
Year of lossClaimsPaid claimsAmount paidAverage paid
202561$10,155$10,155
202411$6,948$6,948
202311$37,822$37,822
202111$1,255$1,255
2020108$239,122$29,890
201922$24,122$12,061
201831$22,791$22,791
201510$0—
201310$0—
201153$37,624$12,541
200911$1,006$1,006
200810$0—
200431$2,488$2,488
200362$19,646$9,823
200222$51,275$25,637
200111$8,456$8,456
199897$159,580$22,797
199676$15,844$2,641
199432$7,898$3,949
199132$2,497$1,248
199010$0—
198987$21,467$3,067
198733$34,370$11,457
198510$0—
19843934$187,706$5,521

OpenFEMA NFIP claims (v3, as of 8 Sep 2026), aggregated by year of loss; amounts are building, contents and increased-cost-of-compliance payments as recorded. Repetitive-loss counts from the NFIP Multiple Loss Properties file (2 Aug 2026); policies in force from the NFIP Residential Penetration Rates file (3 Aug 2026).

National Risk Index

Overall riskRelatively Lowscore 74.7 of 100
Expected annual loss$20MRelatively Low
Social vulnerabilityVery High
Community resilienceVery Low
Hazard (NRI)Risk ratingExpected annual loss
Inland floodingRelatively Low$8,270,285
Cold waveRelatively High$8,139,408
TornadoRelatively Low$1,093,911
EarthquakeRelatively Low$469,097
Strong windRelatively Moderate$451,860
WildfireRelatively Low$396,214
Heat waveRelatively Low$287,563
HailRelatively Low$218,410
LightningRelatively Moderate$201,261
Winter weatherRelatively Moderate$140,092
LandslideRelatively Moderate$31,631
HurricaneVery Low$16,371
Ice stormVery Low$14,341
DroughtVery Low$2,443
AvalancheVery Low$147

FEMA National Risk Index, December 2025 release. Ratings are FEMA's relative comparison of counties; expected annual loss is FEMA's modelled estimate of average yearly building, population and agriculture loss. See how to read the NRI.

Hurricane and tropical storm passes

Tracks within 100 miles6
Tracks within 50 miles1
Hurricane strength within 50 miles0
StormYearClosest approachMax wind while within 100 mi
Helene202458 mi46 mph
Frederic197936 mi40 mph
Unnamed Atlantic storm193251 mi40 mph
Unnamed Atlantic storm191559 mi40 mph
Unnamed Atlantic storm189286 mi46 mph
Unnamed Atlantic storm188899 mi52 mph

HURDAT2 best-track positions at tropical-storm strength (34 kt) or more, measured from the county's Census centre point; through the 2025 season. Distance from a track is not the same as the extent of the storm's wind, rain or surge.

ZIP codes with flood claims

ZIP codes whose NFIP claims carry this county's code, with the number of claims. Five or more claims are needed for a ZIP page to be indexed.

Questions and answers

How often does it hail in Knox County, KY?

NCEI records 50 hail events in Knox County since 1950, in 21 different years; that is about 0.6 recorded events a year. 4 reports were golf-ball size (1.75 in) or larger.

Has Knox County had a tornado?

Yes. NCEI records 3 tornadoes in Knox County since 1950, 0 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.

When was the last federal disaster declaration for Knox County?

24 Jan 2026: Severe Winter Storm, a emergency declaration for winter storm. The county appears in 39 declarations since 1953.

How many flood insurance claims have been filed in Knox County, and how much was paid?

120 NFIP claims since 1978, 86 of them paid, for $892K in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

Is Knox County in the National Risk Index's high-risk band?

FEMA's National Risk Index (December 2025) rates the county "Relatively Low" for overall risk, "Relatively Low" for expected annual loss, "Very High" for social vulnerability and "Very Low" for community resilience. These ratings are FEMA's relative comparison across all US counties.

How does Knox County compare with the rest of Kentucky?

103.0 recorded events per 100 square miles against 140.0 statewide, and 4.0 NFIP claims per 1,000 residents against 6.2. The comparison table on this page shows each measure beside the state and national figures.

Provenance

Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026 (public domain). Declarations: OpenFEMA DisasterDeclarationsSummaries v2, refreshed 29 Sep 2026. Flood claims: OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipMultipleLossProperties v1 (2 Aug 2026); NfipResidentialPenetrationRates v1 (3 Aug 2026). Risk index: FEMA National Risk Index, December 2025. Hurricane tracks: NHC HURDAT2 through 2025. Population and area: US Census Bureau, 2021 vintage. Built 30 Sep 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.