Tornado History
Stephenson Tornado History
This county-level tornado history page focuses on Stephenson, Illinois. The records below identify 23 tornadoes from 1958 through 2026, including a highest listed rating of F2 (Considerable damage). NOAA damage estimates in this group total at least $3.0M, with 0 deaths and 0 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Stephenson, Illinois
Top local patterns from the historical tornado records in this group.
Average 0.3 tornadoes per year (1.0/yr in last decade)
June is the peak tornado month with 7 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 (8 events)
Longest tornado: 38.1 miles in Stephenson, Illinois
Widest tornado: 1,250.0 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.
Summary: In Stephenson, Illinois, June is the most active month with 7 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1998 was the most active year with 3 recorded tornadoes.
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.
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
This map covers the wider location—not your exact property.Measure the closest recorded track to a street address in or near Stephenson, Illinois.
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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.
| Date | Rating | Area | Length | Width | Deaths | Injuries | Min. property damage |
|---|---|---|---|---|---|---|---|
| October 8, 1958 | F2 | Stephenson, Illinois | 38.1 mi | 33 yd | 0 | 0 | $2.5M |
| April 17, 2026 | EF2 | Stephenson, Illinois | 12.54 mi | 1250 yd | 0 | 0 | N/A |
| June 1, 1971 | F1 | Stephenson, Illinois | 0 mi | 33 yd | 0 | 0 | $250K |
| August 24, 1998 | F1 | Stephenson, Illinois | 0.5 mi | 50 yd | 0 | 0 | $80K |
| April 17, 1959 | F1 | Stephenson, Illinois | 2 mi | 33 yd | 0 | 0 | $25K |
| August 16, 2017 | EF1 | Stephenson, Illinois | 2.79 mi | 75 yd | 0 | 0 | N/A |
| May 25, 2022 | EF1 | Stephenson, Illinois | 1.83 mi | 30 yd | 0 | 0 | N/A |
| April 14, 2026 | EF1 | Stephenson, Illinois | 5.08 mi | 100 yd | 0 | 0 | N/A |
| June 1, 2009 | EF0 | Stephenson, Illinois | 0.33 mi | 200 yd | 0 | 0 | $100K |
| May 28, 1998 | F0 | Stephenson, Illinois | 0.1 mi | 0.5 yd | 0 | 0 | $1K |
| May 28, 1998 | F0 | Stephenson, Illinois | 0.1 mi | 0.2 yd | 0 | 0 | N/A |
| June 1, 1999 | F0 | Stephenson, Illinois | 0.1 mi | 10 yd | 0 | 0 | N/A |
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Source And Limits
Data sourced from NOAA Storm Prediction Center and the NCEI Storm Events Database. TornadoTrace summarizes reported weather events for screening and research; it is not a damage assessment, inspection, or insurance determination. Coordinates and records can be approximate, incomplete, revised, or missing. No warranty of completeness or accuracy.