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Tornado History

Winnebago Tornado History

This county-level tornado history page focuses on Winnebago, Illinois. The records below identify 22 tornadoes from 1958 through 2024, including a highest listed rating of F2 (Considerable damage). NOAA damage estimates in this group total at least $940K, with 0 deaths and 6 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes22
Total Deaths0
Total Injuries6
Property Damage$940K
Avg Length3.0 mi
Avg Width134 yd

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Key Tornado Facts for Winnebago, Illinois

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

Average 0.3 tornadoes per year (0.8/yr in last decade)
August is the peak tornado month with 5 recorded events
Deadliest tornado: F2 in Winnebago, Illinois with 0 deaths
2011 was the most active year with 3 tornadoes
The 2020s had the most tornado activity (7 events)
Longest tornado: 16.73 miles in Winnebago, Illinois
Widest tornado: 600.0 yards in Winnebago, Illinois
Most tornadoes in one day: 3 on May 22, 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 Winnebago, Illinois, August is the most active month with 5 tornadoes.

Annual Tornado Trend

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

3210

Summary: 2011 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
Unknown

Summary: EF1 tornadoes are the most common in this group, with 8 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.

$500K$50K$5K$0

Summary: The highest reported property damage year in this group is 2010 with at least $500K in NOAA-listed property damage.

Historical Track Sketch

EF2 November 22, 20102010F2 August 17, 19791979F2 August 30, 19581958EF1 May 22, 20112011F1 August 28, 19901990EF1 May 22, 20112011EF1 May 22, 20112011EF1 June 28, 20172017EF1 August 10, 20202020EF1 March 31, 20232023EF1 March 31, 20232023EF1 March 31, 20232023F0 September 28, 19861986F0 April 29, 19911991F0 June 25, 1998F0 May 30, 2003F0 May 30, 2003EF0 April 9, 2015EF0 August 10, 2020EF0 July 15, 2024EF0 July 15, 2024Unknown June 11, 1967© 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
November 22, 2010EF2Winnebago, Illinois1.7 mi200 yd06$500K
August 17, 1979F2Winnebago, Illinois0.5 mi50 yd00$250K
August 30, 1958F2Winnebago, Illinois0 mi33 yd00$25K
May 22, 2011EF1Winnebago, Illinois16.73 mi200 yd00$100K
August 28, 1990F1Winnebago, Illinois3 mi103 yd00$25K
May 22, 2011EF1Winnebago, Illinois0.9 mi50 yd00$15K
May 22, 2011EF1Winnebago, Illinois2.73 mi50 yd00N/A
June 28, 2017EF1Winnebago, Illinois0.4 mi200 yd00N/A
August 10, 2020EF1Winnebago, Illinois6.03 mi300 yd00N/A
March 31, 2023EF1Winnebago, Illinois5.79 mi300 yd00N/A
March 31, 2023EF1Winnebago, Illinois4.53 mi600 yd00N/A
March 31, 2023EF1Winnebago, Illinois8.63 mi300 yd00N/A

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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.