Tornado History
Knox Tornado History
This county-level tornado history page focuses on Knox, Tennessee. The records below identify 13 tornadoes from 1965 through 2023, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $11.7M, with 2 deaths and 31 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Knox, Tennessee
Top local patterns from the historical tornado records in this group.
Average 0.2 tornadoes per year (0.1/yr in last decade)
April is the peak tornado month with 4 recorded events
Deadliest tornado: F1 in Knox, Tennessee with 2 deaths
2011 was the most active year with 3 tornadoes
The 2010s had the most tornado activity (5 events)
Longest tornado: 10 miles in Knox, Tennessee
Widest tornado: 200.0 yards in Knox, Tennessee
Most tornadoes in one day: 2 on May 15, 2003
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Knox, Tennessee, April 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: 2011 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 1993 with at least $5.0M 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 Knox, Tennessee.
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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 |
|---|---|---|---|---|---|---|---|
| February 21, 1993 | F3 | Knox, Tennessee | 10 mi | 150 yd | 0 | 3 | $5.0M |
| August 7, 2023 | EF2 | Knox, Tennessee | 3.7 mi | 200 yd | 0 | 0 | $3.7M |
| April 15, 1965 | F2 | Knox, Tennessee | 7.4 mi | 200 yd | 0 | 6 | $2.5M |
| May 15, 2003 | F1 | Knox, Tennessee | 1.5 mi | 50 yd | 0 | 0 | $200K |
| May 15, 2003 | F1 | Knox, Tennessee | 2.5 mi | 50 yd | 0 | 0 | $150K |
| April 3, 1974 | F1 | Knox, Tennessee | 1 mi | 150 yd | 2 | 21 | $25K |
| April 27, 2011 | EF1 | Knox, Tennessee | 1 mi | 50 yd | 0 | 0 | $20K |
| May 23, 2000 | F1 | Knox, Tennessee | 0.5 mi | 40 yd | 0 | 1 | N/A |
| June 24, 2011 | EF0 | Knox, Tennessee | 1 mi | 100 yd | 0 | 0 | $40K |
| May 27, 1981 | F0 | Knox, Tennessee | 0.4 mi | 50 yd | 0 | 0 | $25K |
| March 2, 2012 | EF0 | Knox, Tennessee | 2.1 mi | 100 yd | 0 | 0 | $20K |
| April 27, 2011 | EF0 | Knox, Tennessee | 1 mi | 50 yd | 0 | 0 | $10K |
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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.