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Tornado History

Knox Tornado History

This county-level tornado history page focuses on Knox, Missouri. The records below identify 8 tornadoes from 1967 through 2023, including a highest listed rating of F2 (Considerable damage). NOAA damage estimates in this group total at least $275K, with 0 deaths and 2 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes8
Total Deaths0
Total Injuries2
Property Damage$275K
Avg Length5.7 mi
Avg Width147 yd

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Key Tornado Facts for Knox, Missouri

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

Average 0.1 tornadoes per year (0.2/yr in last decade)
May is the peak tornado month with 4 recorded events
Deadliest tornado: F0 in Knox, Missouri with 0 deaths
2009 was the most active year with 2 tornadoes
The 2000s had the most tornado activity (3 events)
Longest tornado: 16 miles in Knox, Missouri
Widest tornado: 450.0 yards in Knox, Missouri
Most tornadoes in one day: 2 on May 13, 2009

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 Knox, Missouri, May 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.

20

Summary: 2009 was the most active year with 2 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
F2
EF2

Summary: EF0 tornadoes are the most common in this group, with 3 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.

$250K$25K$2K$0

Summary: The highest reported property damage year in this group is 1975 with at least $250K in NOAA-listed property damage.

Historical Track Sketch

F2 May 13, 19701970F2 May 10, 20032003EF2 August 4, 20232023F1 August 16, 19751975F0 August 18, 19671967EF0 May 13, 20092009EF0 May 13, 20092009EF0 April 27, 20162016© 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
May 13, 1970F2Knox, Missouri7.6 mi50 yd00$25K
May 10, 2003F2Knox, Missouri7 mi200 yd00N/A
August 4, 2023EF2Knox, Missouri1.64 mi450 yd02N/A
August 16, 1975F1Knox, Missouri16 mi100 yd00$250K
August 18, 1967F0Knox, Missouri1 mi33 yd00$30
May 13, 2009EF0Knox, Missouri9.23 mi200 yd00N/A
May 13, 2009EF0Knox, Missouri3.13 mi100 yd00N/A
April 27, 2016EF0Knox, Missouri0.03 mi40 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.