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Tornado History
Calhoun Tornado History
This county-level tornado history page focuses on Calhoun, Iowa. The records below identify 37 tornadoes from 1953 through 2024, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $34.3M, with 4 deaths and 26 injuries recorded across the listed events.
Key Tornado Statistics
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Check any addressKey Tornado Facts for Calhoun, Iowa
Top local patterns from the historical tornado records in this group.
Average 0.5 tornadoes per year (0.9/yr in last decade)
May is the peak tornado month with 14 recorded events
Deadliest tornado: F4 in Calhoun, Iowa with 3 deaths
2021 was the most active year with 5 tornadoes
The 2020s had the most tornado activity (9 events)
Longest tornado: 30.7 miles in Calhoun, Iowa
Widest tornado: 700.0 yards in Calhoun, Iowa
Most tornadoes in one day: 3 on Dec 15, 2021
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Calhoun, Iowa, May is the most active month with 14 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 5 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 1979 with at least $25.0M in NOAA-listed property damage.
Historical Track Sketch
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 28, 1979 | F4 | Calhoun, Iowa | 10.8 mi | 333 yd | 3 | 26 | $25.0M |
| June 9, 1954 | F4 | Calhoun, Iowa | 9.9 mi | 440 yd | 1 | 0 | $250K |
| May 5, 1965 | F4 | Calhoun, Iowa | 9.9 mi | 200 yd | 0 | 0 | $25K |
| July 14, 2021 | EF3 | Calhoun, Iowa | 10.81 mi | 505 yd | 0 | 0 | $2.5M |
| June 7, 1953 | F3 | Calhoun, Iowa | 30.7 mi | 200 yd | 0 | 0 | N/A |
| April 26, 1984 | F2 | Calhoun, Iowa | 5 mi | 20 yd | 0 | 0 | $2.5M |
| June 19, 1990 | F2 | Calhoun, Iowa | 2 mi | 77 yd | 0 | 0 | $2.5M |
| July 28, 1986 | F2 | Calhoun, Iowa | 4 mi | 150 yd | 0 | 0 | $250K |
| December 15, 2021 | EF2 | Calhoun, Iowa | 11.52 mi | 80 yd | 0 | 0 | $50K |
| May 15, 1965 | F2 | Calhoun, Iowa | 0.5 mi | 50 yd | 0 | 0 | $250 |
| May 10, 2015 | EF1 | Calhoun, Iowa | 18.11 mi | 700 yd | 0 | 0 | $1.0M |
| May 18, 2005 | F1 | Calhoun, Iowa | 2 mi | 100 yd | 0 | 0 | $50K |
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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.