Tornado History

Knox Tornado History

This county-level tornado history page focuses on Knox, Illinois. The records below identify 28 tornadoes from 1961 through 2025, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $7.2M, with 0 deaths and 14 injuries recorded across the listed events.

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28recorded tornadoes
F3 (Severe damage)highest rating
$7.2Mminimum property damage
April 20, 2025latest tornado
70.1 milongest listed path
880 ydwidest listed path

Historical Track Sketch

F3 May 14, 19611961F3 June 14, 19741974F2 May 13, 19951995EF2 June 5, 20102010F2 March 23, 19751975F2 March 4, 19761976F1 June 29, 19981998F1 July 21, 19611961F1 May 7, 19671967EF1 June 18, 20212021F1 July 6, 19871987F1 June 20, 19741974EF1 July 15, 20242024EF1 April 20, 20252025EF1 April 20, 2025F0 June 20, 1974F0 August 3, 1997F0 April 22, 1999F0 September 11, 2000F0 April 30, 2003F0 April 20, 2004F0 June 8, 2005EF0 June 5, 2010EF0 May 23, 2017EF0 May 27, 2019Unknown June 20, 1974Unknown June 20, 1974EFU March 28, 2020© OpenStreetMap contributors

Rating Breakdown

  • F3 (Severe damage)2
  • F2 (Considerable damage)3
  • EF2 (Considerable damage)1
  • F1 (Moderate damage)5
  • EF1 (Moderate damage)4
  • F0 (Light damage)7
  • EF0 (Light damage)3
  • Unknown rating2
  • Unknown rating1

Most Active Years

  • 19745
  • 19612
  • 20102
  • 20252
  • 19671
  • 19751
  • 19761
  • 19871

Notable Tornado Records

The table highlights the strongest and most damaging records in this page's local dataset. Damage totals are NOAA-reported minimum estimates where available.

DateRatingAreaLengthWidthDeathsInjuriesMin. property damage
May 14, 1961F3Knox, Illinois17.3 mi100 yd08$2.5M
June 14, 1974F3Knox, Illinois14.9 mi33 yd01N/A
May 13, 1995F2Knox, Illinois14 mi880 yd02$1.6M
June 5, 2010EF2Knox, Illinois5.71 mi50 yd00$420K
March 23, 1975F2Knox, Illinois1 mi80 yd02$25K
March 4, 1976F2Knox, Illinois0.1 mi440 yd00$25K
June 29, 1998F1Knox, Illinois3 mi200 yd01$2.0M
July 21, 1961F1Knox, Illinois70.1 mi33 yd00$250K
May 7, 1967F1Knox, Illinois1.3 mi150 yd00$250K
June 18, 2021EF1Knox, Illinois10.26 mi250 yd00$150K
July 6, 1987F1Knox, Illinois0.1 mi20 yd00$2K
June 20, 1974F1Knox, Illinois0 mi33 yd00N/A

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Source And Limits

Data source: NOAA/NCEI. TornadoTrace summarizes historical records for screening and research. Coordinates, damage estimates, narratives, and event details can be approximate, incomplete, revised, or missing. Do not use this page as legal, insurance, engineering, real estate, emergency management, or safety advice.