Tornado History

Cass Tornado History

This county-level tornado history page focuses on Cass, Minnesota. The records below identify 27 tornadoes from 1964 through 2025, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $10.3M, with 13 deaths and 75 injuries recorded across the listed events.

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27recorded tornadoes
F4 (Devastating damage)highest rating
$10.3Mminimum property damage
June 16, 2025latest tornado
21.5 milongest listed path
833 ydwidest listed path

Historical Track Sketch

F4 August 6, 19691969F3 August 6, 19691969F3 August 26, 19771977F3 July 5, 19911991F2 August 26, 19771977F2 July 5, 19911991F1 August 2, 19811981EF1 May 30, 20222022F1 June 14, 19671967F1 July 2, 19751975F1 July 22, 19761976F1 September 9, 19641964F1 August 18, 19821982F1 June 27, 19771977F1 July 5, 1991EF1 August 29, 2013EF1 May 30, 2022EF1 June 16, 2025F0 July 14, 1968EF0 June 17, 2010F0 July 12, 1978F0 June 28, 2003EF0 May 25, 2008EF0 June 19, 2016EF0 August 3, 2017EF0 August 3, 2017EF0 August 3, 2017© OpenStreetMap contributors

Rating Breakdown

  • F4 (Devastating damage)1
  • F3 (Severe damage)3
  • F2 (Considerable damage)2
  • F1 (Moderate damage)8
  • EF1 (Moderate damage)4
  • F0 (Light damage)3
  • EF0 (Light damage)6

Most Active Years

  • 19773
  • 19913
  • 20173
  • 19692
  • 20222
  • 19641
  • 19671
  • 19681

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 6, 1969F4Cass, Minnesota12.3 mi833 yd1270$2.5M
August 6, 1969F3Cass, Minnesota17.3 mi167 yd04$2.5M
August 26, 1977F3Cass, Minnesota8.9 mi400 yd00$2.5M
July 5, 1991F3Cass, Minnesota1 mi43 yd00N/A
August 26, 1977F2Cass, Minnesota21.5 mi33 yd00$25K
July 5, 1991F2Cass, Minnesota2.5 mi13 yd00N/A
August 2, 1981F1Cass, Minnesota0.5 mi400 yd00$2.5M
May 30, 2022EF1Cass, Minnesota0.48 mi50 yd00$150K
June 14, 1967F1Cass, Minnesota0.5 mi33 yd00$25K
July 2, 1975F1Cass, Minnesota0 mi400 yd00$25K
July 22, 1976F1Cass, Minnesota4.5 mi50 yd01$25K
September 9, 1964F1Cass, Minnesota0.3 mi200 yd00$2K

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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.