Tornado History
Clay Tornado History
This county-level tornado history page focuses on Clay, Iowa. The records below identify 42 tornadoes from 1954 through 2026, 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.
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Key Tornado Statistics
Key Tornado Facts for Clay, Iowa
Top local patterns from the historical tornado records in this group.
Average 0.6 tornadoes per year (0.5/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.
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.
Summary: 2004 was the most active year with 10 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 2004 with at least $780K 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 Clay, Iowa.
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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 11, 2004 | F3 | Clay, Iowa | 6 mi | 400 yd | 0 | 0 | $50K |
| September 20, 1980 | F3 | Clay, Iowa | 1.5 mi | 300 yd | 0 | 0 | $25K |
| June 11, 2004 | F2 | Clay, Iowa | 5.5 mi | 200 yd | 0 | 0 | $500K |
| June 11, 2008 | EF2 | Clay, Iowa | 13.08 mi | 100 yd | 0 | 0 | $300K |
| June 7, 1984 | F2 | Clay, Iowa | 2 mi | 77 yd | 0 | 0 | $250K |
| May 28, 1959 | F2 | Clay, Iowa | 1 mi | 150 yd | 0 | 0 | $2K |
| June 4, 1975 | F2 | Clay, Iowa | 0 mi | 33 yd | 0 | 0 | $2K |
| April 26, 1954 | F2 | Clay, Iowa | 8.4 mi | 33 yd | 0 | 0 | $250 |
| June 7, 1984 | F1 | Clay, Iowa | 1 mi | 77 yd | 0 | 0 | $250K |
| July 28, 1986 | F1 | Clay, Iowa | 1 mi | 40 yd | 0 | 0 | $250K |
| May 21, 2004 | F1 | Clay, Iowa | 1 mi | 200 yd | 0 | 0 | $230K |
| August 22, 1954 | F1 | Clay, Iowa | 2.5 mi | 200 yd | 0 | 0 | $25K |
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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.