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Tornado History
Washington Tornado History
This county-level tornado history page focuses on Washington, Iowa. The records below identify 23 tornadoes from 1965 through 2024, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $40.5M, with 0 deaths and 29 injuries recorded across the listed events.
Key Tornado Statistics
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Check any addressKey Tornado Facts for Washington, Iowa
Top local patterns from the historical tornado records in this group.
Average 0.4 tornadoes per year (0.5/yr in last decade)
May is the peak tornado month with 9 recorded events
Deadliest tornado: Unknown in Washington, Iowa with 0 deaths
2006 was the most active year with 3 tornadoes
The 2000s had the most tornado activity (6 events)
Longest tornado: 23.5 miles in Washington, Iowa
Widest tornado: 700.0 yards in Washington, Iowa
Most tornadoes in one day: 2 on May 8, 1988
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Washington, Iowa, May is the most active month with 9 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 2006 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 1988 with at least $27.5M 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 |
|---|---|---|---|---|---|---|---|
| May 15, 1998 | F3 | Washington, Iowa | 18 mi | 400 yd | 0 | 28 | $9.0M |
| March 31, 2023 | EF3 | Washington, Iowa | 10.19 mi | 700 yd | 0 | 0 | N/A |
| May 8, 1988 | F2 | Washington, Iowa | 19 mi | 60 yd | 0 | 0 | $25.0M |
| June 7, 1984 | F2 | Washington, Iowa | 8 mi | 200 yd | 0 | 0 | $2.5M |
| May 8, 1988 | F2 | Washington, Iowa | 11 mi | 60 yd | 0 | 0 | $2.5M |
| May 3, 2012 | EF2 | Washington, Iowa | 3.53 mi | 440 yd | 0 | 0 | $500K |
| November 9, 1975 | F2 | Washington, Iowa | 0 mi | 33 yd | 0 | 0 | $25K |
| April 2, 2006 | F2 | Washington, Iowa | 1 mi | 75 yd | 0 | 0 | $25K |
| May 20, 1987 | F1 | Washington, Iowa | 1.5 mi | 27 yd | 0 | 0 | $250K |
| July 16, 2007 | EF1 | Washington, Iowa | 0.5 mi | 100 yd | 0 | 0 | $100K |
| June 20, 2015 | EF1 | Washington, Iowa | 1.38 mi | 75 yd | 0 | 0 | $50K |
| April 20, 1973 | F1 | Washington, Iowa | 2 mi | 350 yd | 0 | 0 | $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.