Tornado History
Cass Tornado History
This county-level tornado history page focuses on Cass, Illinois. The records below identify 18 tornadoes from 1960 through 2025, including a highest listed rating of F2 (Considerable damage). NOAA damage estimates in this group total at least $2.3M, with 1 deaths and 7 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Cass, 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 4 recorded events
Deadliest tornado: F1 in Cass, Illinois with 1 deaths
2021 was the most active year with 6 tornadoes
The 2020s had the most tornado activity (8 events)
Longest tornado: 12.75 miles in Cass, Illinois
Widest tornado: 333.0 yards in Cass, Illinois
Most tornadoes in one day: 3 on Jul 10, 2021
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Cass, Illinois, June is the most active month with 4 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 2021 was the most active year with 6 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 1999 with at least $1.8M 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 Cass, 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 |
|---|---|---|---|---|---|---|---|
| June 23, 1960 | F2 | Cass, Illinois | 11.8 mi | 100 yd | 0 | 1 | $250K |
| July 27, 1973 | F2 | Cass, Illinois | 0 mi | 33 yd | 0 | 0 | $25K |
| December 10, 2021 | EF2 | Cass, Illinois | 12.75 mi | 200 yd | 0 | 0 | N/A |
| April 8, 1999 | F1 | Cass, Illinois | 2.2 mi | 333 yd | 1 | 6 | $1.8M |
| December 1, 2018 | EF1 | Cass, Illinois | 4.23 mi | 200 yd | 0 | 0 | $200K |
| August 8, 1973 | F1 | Cass, Illinois | 0 mi | 33 yd | 0 | 0 | N/A |
| April 19, 2002 | F1 | Cass, Illinois | 2 mi | 40 yd | 0 | 0 | N/A |
| July 10, 2021 | EF1 | Cass, Illinois | 2.42 mi | 75 yd | 0 | 0 | N/A |
| December 1, 2018 | EF0 | Cass, Illinois | 0.64 mi | 50 yd | 0 | 0 | $35K |
| June 4, 1986 | F0 | Cass, Illinois | 3 mi | 100 yd | 0 | 0 | N/A |
| April 7, 1998 | F0 | Cass, Illinois | 0.3 mi | 50 yd | 0 | 0 | N/A |
| February 20, 2014 | EF0 | Cass, Illinois | 0.92 mi | 25 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.