Tornado History

Mercer Tornado History

This county-level tornado history page focuses on Mercer, Illinois. The records below identify 43 tornadoes from 1952 through 2025, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $5.3M, with 0 deaths and 3 injuries recorded across the listed events.

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43recorded tornadoes
F3 (Severe damage)highest rating
$5.3Mminimum property damage
June 3, 2025latest tornado
26.9 milongest listed path
880 ydwidest listed path

Historical Track Sketch

F3 August 15, 19781978F3 June 14, 19741974F2 April 21, 19731973F2 June 18, 19981998F2 April 13, 20062006EF2 May 24, 20152015F2 April 13, 19741974F2 April 13, 19741974F1 April 30, 20032003F1 April 30, 20032003F1 April 30, 20032003F1 April 23, 19651965F1 April 13, 20062006F1 April 13, 20062006F1 April 23, 1965F1 July 30, 1987EF1 May 17, 2017F1 April 13, 2006F1 June 29, 1998F1 July 17, 1952EF1 July 12, 2014EF1 July 12, 2014EF1 June 11, 2015EF1 June 15, 2019EF1 November 10, 2020EF1 November 10, 2020EF1 July 15, 2024EF1 June 3, 2025EF1 June 3, 2025EF1 June 3, 2025F0 April 30, 2003F0 May 10, 2003F0 May 10, 2003F0 May 10, 2003F0 April 30, 2003F0 May 9, 1996F0 April 15, 1998F0 June 6, 1999EF0 July 12, 2014EF0 December 23, 2015EF0 April 20, 2025EFU August 20, 2022EFU August 20, 2022© OpenStreetMap contributors

Rating Breakdown

  • F3 (Severe damage)2
  • F2 (Considerable damage)5
  • EF2 (Considerable damage)1
  • F1 (Moderate damage)11
  • EF1 (Moderate damage)11
  • F0 (Light damage)8
  • EF0 (Light damage)3
  • Unknown rating2

Most Active Years

  • 20038
  • 20064
  • 20254
  • 19743
  • 19983
  • 20143
  • 20153
  • 19652

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
August 15, 1978F3Mercer, Illinois6.4 mi77 yd00$250K
June 14, 1974F3Mercer, Illinois26.9 mi440 yd01N/A
April 21, 1973F2Mercer, Illinois10.2 mi33 yd00$2.5M
June 18, 1998F2Mercer, Illinois6 mi880 yd00$110K
April 13, 2006F2Mercer, Illinois2 mi50 yd00$30K
May 24, 2015EF2Mercer, Illinois6.75 mi50 yd00$30K
April 13, 1974F2Mercer, Illinois0.1 mi20 yd00$25K
April 13, 1974F2Mercer, Illinois0.1 mi17 yd01$2K
April 30, 2003F1Mercer, Illinois0 mi75 yd00$500K
April 30, 2003F1Mercer, Illinois0.1 mi50 yd00$500K
April 30, 2003F1Mercer, Illinois0.5 mi75 yd00$300K
April 23, 1965F1Mercer, Illinois16.2 mi100 yd01$250K

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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.