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Tornado History

Clay Tornado History

This county-level tornado history page focuses on Clay, Iowa. The records below identify 37 tornadoes from 1954 through 2014, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $2.0M, with 0 deaths and 0 injuries recorded across the listed events.

Key Tornado Statistics

Total Tornadoes37
Total Deaths0
Total Injuries0
Property Damage$2.0M
Avg Length1.8 mi
Avg Width91 yd

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Key Tornado Facts for Clay, Iowa

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

Average 0.6 tornadoes per year (0.0/yr in last decade)
June is the peak tornado month with 17 recorded events
Deadliest tornado: F1 in Clay, Iowa with 0 deaths
2004 was the most active year with 10 tornadoes
The 2000s had the most tornado activity (16 events)
Longest tornado: 13.08 miles in Clay, Iowa
Widest tornado: 400.0 yards in Clay, Iowa
Most tornadoes in one day: 9 on Jun 11, 2004

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 Clay, Iowa, June is the most active month with 17 tornadoes.

Annual Tornado Trend

Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.

10740

Summary: 2004 was the most active year with 10 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
F2
EF2
F3
Unknown

Summary: F1 tornadoes are the most common in this group, with 12 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.

$780K$78K$8K$0

Summary: The highest reported property damage year in this group is 2004 with at least $780K in NOAA-listed property damage.

Historical Track Sketch

F3 June 11, 20042004F3 September 20, 19801980F2 June 11, 20042004EF2 June 11, 20082008F2 June 7, 19841984F2 May 28, 19591959F2 June 4, 19751975F2 April 26, 19541954F1 June 7, 19841984F1 July 28, 19861986F1 May 21, 20042004F1 August 22, 19541954F1 May 28, 19591959F1 September 28, 19861986F1 April 19, 1955F1 March 16, 1963F1 June 11, 2004F1 June 11, 2004F1 June 11, 2004F1 June 11, 2004EF0 May 1, 2012EF0 June 18, 2014F0 August 24, 1990F0 May 30, 1985F0 June 11, 2004F0 June 11, 2004F0 June 11, 2004F0 July 26, 2006F0 July 26, 2006EF0 June 11, 2008EF0 June 11, 2008EF0 May 8, 2009EF0 April 21, 2012EF0 April 21, 2012EF0 October 4, 2013EF0 June 19, 2014Unknown May 29, 1957© 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
June 11, 2004F3Clay, Iowa6 mi400 yd00$50K
September 20, 1980F3Clay, Iowa1.5 mi300 yd00$25K
June 11, 2004F2Clay, Iowa5.5 mi200 yd00$500K
June 11, 2008EF2Clay, Iowa13.08 mi100 yd00$300K
June 7, 1984F2Clay, Iowa2 mi77 yd00$250K
May 28, 1959F2Clay, Iowa1 mi150 yd00$2K
June 4, 1975F2Clay, Iowa0 mi33 yd00$2K
April 26, 1954F2Clay, Iowa8.4 mi33 yd00$250
June 7, 1984F1Clay, Iowa1 mi77 yd00$250K
July 28, 1986F1Clay, Iowa1 mi40 yd00$250K
May 21, 2004F1Clay, Iowa1 mi200 yd00$230K
August 22, 1954F1Clay, Iowa2.5 mi200 yd00$25K

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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.