Tornado History

Cass Tornado History

This county-level tornado history page focuses on Cass, North Dakota. The records below identify 108 tornadoes from 1950 through 2025, including a highest listed rating of F5 (Incredible damage). NOAA damage estimates in this group total at least $36.7M, with 13 deaths and 111 injuries recorded across the listed events.

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108recorded tornadoes
F5 (Incredible damage)highest rating
$36.7Mminimum property damage
June 20, 2025latest tornado
27.4 milongest listed path
1351 ydwidest listed path

Historical Track Sketch

F5 June 20, 19571957EF4 June 20, 20252025F3 June 13, 19501950F3 August 30, 19561956F3 June 15, 19731973EF2 July 15, 20072007EF2 May 30, 20112011EF2 May 30, 20112011F2 July 18, 20042004F2 May 5, 19651965F2 May 5, 19651965F2 May 5, 19651965EF2 July 15, 20072007EF2 July 4, 20112011EF2 May 30, 2011F2 May 29, 1953F2 June 10, 1959F2 August 19, 1976F2 July 10, 1960F2 May 31, 1960F2 September 5, 2005EF2 June 20, 2025EF1 July 15, 2007F1 August 19, 1976F1 August 19, 1976F1 May 27, 1976F1 July 23, 1988F1 June 22, 1992EF1 July 15, 2007EF1 May 30, 2011F1 June 27, 1965F1 May 26, 1972F1 August 19, 1976F1 July 21, 1987F1 May 20, 2005F1 August 28, 1983F1 August 10, 1976F1 May 19, 2004F1 September 5, 2005F1 August 5, 2006EF1 May 30, 2007EF1 July 13, 2010EF1 July 27, 2010EF1 September 4, 2014EF1 June 20, 2025EF1 June 20, 2025F0 June 22, 1992EF0 June 14, 2008EF0 July 4, 2011F0 June 28, 1979F0 July 30, 1983F0 July 9, 1967F0 July 9, 1967F0 July 7, 1975F0 May 19, 1975F0 August 31, 1975F0 June 1, 1979F0 August 6, 1980F0 July 10, 1981F0 May 4, 1985F0 July 10, 1986F0 July 10, 1986F0 August 17, 1987F0 July 21, 1987F0 July 12, 1988F0 July 12, 1988F0 June 19, 1990F0 June 13, 1991F0 July 9, 1992F0 June 5, 1996F0 July 26, 1997F0 July 26, 1997F0 July 26, 1997F0 August 28, 2002F0 July 10, 2004F0 July 10, 2004F0 July 18, 2004F0 July 18, 2004F0 May 20, 2005F0 June 29, 2005© OpenStreetMap contributors

Rating Breakdown

  • F5 (Incredible damage)1
  • EF4 (Devastating damage)1
  • F3 (Severe damage)3
  • F2 (Considerable damage)10
  • EF2 (Considerable damage)7
  • F1 (Moderate damage)15
  • EF1 (Moderate damage)9
  • F0 (Light damage)35
  • EF0 (Light damage)17
  • Unknown rating9
  • Unknown rating1

Most Active Years

  • 202510
  • 20077
  • 20117
  • 19656
  • 19766
  • 20046
  • 20055
  • 20064

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
June 20, 1957F5Cass, North Dakota27.4 mi500 yd10103$25.0M
June 20, 2025EF4Cass, North Dakota6.7 mi1000 yd30N/A
June 13, 1950F3Cass, North Dakota2 mi33 yd00$250K
August 30, 1956F3Cass, North Dakota5.1 mi60 yd08$250K
June 15, 1973F3Cass, North Dakota0 mi33 yd00$250K
July 15, 2007EF2Cass, North Dakota8 mi250 yd00$2.5M
May 30, 2011EF2Cass, North Dakota7.44 mi600 yd00$750K
May 30, 2011EF2Cass, North Dakota4 mi400 yd00$600K
July 18, 2004F2Cass, North Dakota4 mi100 yd00$500K
May 5, 1965F2Cass, North Dakota5.7 mi83 yd00$250K
May 5, 1965F2Cass, North Dakota8.5 mi83 yd00$250K
May 5, 1965F2Cass, North Dakota19.6 mi83 yd00$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.