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Tornado History

Shiawassee Tornado History

This county-level tornado history page focuses on Shiawassee, Michigan. The records below identify 32 tornadoes from 1956 through 2025, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $17.6M, with 0 deaths and 13 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes32
Total Deaths0
Total Injuries13
Property Damage$17.6M
Avg Length3.9 mi
Avg Width108 yd

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Key Tornado Facts for Shiawassee, Michigan

Top local patterns from the historical tornado records in this group.

Average 0.5 tornadoes per year (0.5/yr in last decade)
August is the peak tornado month with 9 recorded events
Deadliest tornado: F1 in Shiawassee, Michigan with 0 deaths
1991 was the most active year with 3 tornadoes
The 2010s had the most tornado activity (8 events)
Longest tornado: 21.9 miles in Shiawassee, Michigan
Widest tornado: 700.0 yards in Shiawassee, Michigan
Most tornadoes in one day: 3 on Aug 17, 1991

Monthly Distribution

Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.

January
February
March
April
May
June
July
August
September
October
November
December

Summary: In Shiawassee, Michigan, August is the most active month with 9 tornadoes.

Annual Tornado Trend

Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.

3210

Summary: 1991 was the most active year with 3 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F2
EF2
F4

Summary: F1 tornadoes are the most common in this group, with 7 recorded events.

Property Damage Trends

Visualizes reported property damage over time. Bars use a log-like scale so very large damage years do not flatten the rest of the chart.

$9.8M$985K$98K$0

Summary: The highest reported property damage year in this group is 2019 with at least $9.8M in NOAA-listed property damage.

Historical Track Sketch

F4 April 11, 19651965EF2 March 14, 20192019F2 April 21, 19761976F2 April 28, 19861986F2 April 16, 19671967F2 August 19, 19781978F2 August 29, 19751975F2 September 21, 19571957EF1 August 11, 20232023EF1 October 18, 20072007F1 May 12, 19561956EF1 May 28, 20132013F1 April 21, 19761976F1 April 2, 19771977F1 November 27, 1989EF1 May 29, 2011F1 August 30, 1984F1 August 17, 1991F1 June 10, 1984EF1 March 30, 2025EF0 August 24, 2007EF0 May 28, 2013EF0 March 14, 2019EF0 August 29, 2019EF0 May 28, 2013EF0 June 15, 2015F0 June 3, 1973F0 August 17, 1991F0 August 17, 1991F0 May 21, 2001F0 May 13, 2004F0 May 22, 2004© OpenStreetMap contributors

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
April 11, 1965F4Shiawassee, Michigan6.5 mi100 yd00$250K
March 14, 2019EF2Shiawassee, Michigan18.2 mi700 yd00$9.8M
April 21, 1976F2Shiawassee, Michigan3 mi83 yd01$2.5M
April 28, 1986F2Shiawassee, Michigan18.4 mi40 yd00$2.5M
April 16, 1967F2Shiawassee, Michigan0.3 mi20 yd01$250K
August 19, 1978F2Shiawassee, Michigan2 mi230 yd08$250K
August 29, 1975F2Shiawassee, Michigan1.5 mi83 yd00$25K
September 21, 1957F2Shiawassee, Michigan21.9 mi33 yd00$2K
August 11, 2023EF1Shiawassee, Michigan3.04 mi430 yd00$1.0M
October 18, 2007EF1Shiawassee, Michigan2 mi100 yd01$400K
May 12, 1956F1Shiawassee, Michigan2 mi33 yd01$250K
May 28, 2013EF1Shiawassee, Michigan5.6 mi550 yd00$100K

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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.