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Tornado History

Stephenson Tornado History

This county-level tornado history page focuses on Stephenson, Illinois. The records below identify 19 tornadoes from 1958 through 2024, including a highest listed rating of F2 (Considerable damage). NOAA damage estimates in this group total at least $2.7M, with 0 deaths and 0 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes19
Total Deaths0
Total Injuries0
Property Damage$2.7M
Avg Length3.7 mi
Avg Width41 yd

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Key Tornado Facts for Stephenson, Illinois

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

Average 0.3 tornadoes per year (0.8/yr in last decade)
June is the peak tornado month with 5 recorded events
Deadliest tornado: F2 in Stephenson, Illinois with 0 deaths
1998 was the most active year with 3 tornadoes
The 2020s had the most tornado activity (6 events)
Longest tornado: 38.1 miles in Stephenson, Illinois
Widest tornado: 200.0 yards in Stephenson, Illinois
Most tornadoes in one day: 3 on Jun 14, 2003

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 Stephenson, Illinois, June 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: 1998 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
EFU

Summary: F0 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.

$2.5M$250K$25K$0

Summary: The highest reported property damage year in this group is 1958 with at least $2.5M in NOAA-listed property damage.

Historical Track Sketch

F2 October 8, 19581958F1 August 24, 19981998F1 April 17, 19591959EF1 August 16, 20172017EF1 May 25, 20222022EF0 June 1, 20092009F0 May 28, 19981998F0 May 28, 19981998F0 June 6, 19991999F0 June 14, 20032003F0 June 14, 20032003F0 June 14, 20032003EF0 July 12, 20102010EF0 August 16, 20172017EF0 August 10, 2020EFU March 31, 2023EFU March 4, 2024EFU July 15, 2024EFU July 15, 2024© 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
October 8, 1958F2Stephenson, Illinois38.1 mi33 yd00$2.5M
August 24, 1998F1Stephenson, Illinois0.5 mi50 yd00$80K
April 17, 1959F1Stephenson, Illinois2 mi33 yd00$25K
August 16, 2017EF1Stephenson, Illinois2.79 mi75 yd00N/A
May 25, 2022EF1Stephenson, Illinois1.83 mi30 yd00N/A
June 1, 2009EF0Stephenson, Illinois0.33 mi200 yd00$100K
May 28, 1998F0Stephenson, Illinois0.1 mi0.5 yd00$1K
May 28, 1998F0Stephenson, Illinois0.1 mi0.2 yd00N/A
June 6, 1999F0Stephenson, Illinois0.1 mi10 yd00N/A
June 14, 2003F0Stephenson, Illinois0 mi50 yd00N/A
June 14, 2003F0Stephenson, Illinois0.5 mi50 yd00N/A
June 14, 2003F0Stephenson, Illinois0 mi50 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.