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Tornado History

Sac Tornado History

This county-level tornado history page focuses on Sac, Iowa. The records below identify 25 tornadoes from 1965 through 2023, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $10.8M, with 0 deaths and 0 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes25
Total Deaths0
Total Injuries0
Property Damage$10.8M
Avg Length3.5 mi
Avg Width247 yd

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Key Tornado Facts for Sac, Iowa

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

Average 0.4 tornadoes per year (0.8/yr in last decade)
April is the peak tornado month with 8 recorded events
Deadliest tornado: F2 in Sac, Iowa with 0 deaths
2011 was the most active year with 5 tornadoes
The 2010s had the most tornado activity (9 events)
Longest tornado: 15.61 miles in Sac, Iowa
Widest tornado: 2,200.0 yards in Sac, Iowa
Most tornadoes in one day: 5 on Apr 9, 2011

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 Sac, Iowa, April is the most active month with 8 tornadoes.

Annual Tornado Trend

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

5420

Summary: 2011 was the most active year with 5 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
F2
EF2
F3
EF3
Unknown
EFU

Summary: EFU tornadoes are the most common in this group, with 6 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.

$5.5M$550K$55K$0

Summary: The highest reported property damage year in this group is 2011 with at least $5.5M in NOAA-listed property damage.

Historical Track Sketch

F3 April 26, 19911991EF3 April 9, 20112011F2 April 26, 19841984EF2 April 9, 20112011EF2 April 9, 20112011EF2 April 9, 20112011EF2 December 15, 20212021F2 May 15, 19651965F1 April 27, 19891989F1 August 13, 19851985EF0 August 31, 20142014EF0 August 5, 20232023F0 March 13, 19901990EF0 April 9, 20112011F0 May 15, 1998F0 May 27, 1999EF0 September 30, 2007EF0 June 22, 2010Unknown July 5, 1978EFU May 29, 2019EFU May 29, 2019EFU July 14, 2021EFU July 14, 2021EFU August 5, 2023EFU May 13, 2023© 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 26, 1991F3Sac, Iowa6 mi150 yd00$2.5M
April 9, 2011EF3Sac, Iowa10.14 mi1760 yd00$2.0M
April 26, 1984F2Sac, Iowa10 mi200 yd00$2.5M
April 9, 2011EF2Sac, Iowa8.42 mi2200 yd00$2.0M
April 9, 2011EF2Sac, Iowa8.34 mi660 yd00$1.0M
April 9, 2011EF2Sac, Iowa1.25 mi220 yd00$500K
December 15, 2021EF2Sac, Iowa15.61 mi100 yd00$150K
May 15, 1965F2Sac, Iowa0.5 mi50 yd00$250
April 27, 1989F1Sac, Iowa14 mi60 yd00$2K
August 13, 1985F1Sac, Iowa1.5 mi10 yd00N/A
August 31, 2014EF0Sac, Iowa2.13 mi60 yd00$90K
August 5, 2023EF0Sac, Iowa0.9 mi35 yd00$50K

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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.