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Tornado History
McHenry Tornado History
This county-level tornado history page focuses on McHenry, Illinois. The records below identify 26 tornadoes from 1958 through 2024, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $32.8M, with 7 deaths and 120 injuries recorded across the listed events.
Key Tornado Statistics
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Check any addressKey Tornado Facts for McHenry, Illinois
Top local patterns from the historical tornado records in this group.
Average 0.4 tornadoes per year (0.7/yr in last decade)
April is the peak tornado month with 6 recorded events
Deadliest tornado: F4 in McHenry, Illinois with 6 deaths
2015 was the most active year with 3 tornadoes
The 2010s had the most tornado activity (6 events)
Longest tornado: 26.2 miles in McHenry, Illinois
Widest tornado: 1,200.0 yards in McHenry, Illinois
Most tornadoes in one day: 2 on Apr 21, 1967
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In McHenry, Illinois, April is the most active month with 6 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 2015 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 1967 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 |
|---|---|---|---|---|---|---|---|
| April 21, 1967 | F4 | McHenry, Illinois | 14 mi | 1200 yd | 0 | 40 | $25.0M |
| April 21, 1967 | F4 | McHenry, Illinois | 4.3 mi | 150 yd | 0 | 3 | $2.5M |
| April 11, 1965 | F4 | McHenry, Illinois | 9.1 mi | 400 yd | 6 | 75 | N/A |
| January 7, 2008 | EF3 | McHenry, Illinois | 6.3 mi | 100 yd | 0 | 1 | $2.0M |
| October 9, 1958 | F2 | McHenry, Illinois | 26.2 mi | 33 yd | 1 | 0 | $2.5M |
| October 8, 1959 | F2 | McHenry, Illinois | 2 mi | 90 yd | 0 | 1 | $250K |
| April 19, 1963 | F2 | McHenry, Illinois | 0 mi | 33 yd | 0 | 0 | $250K |
| August 15, 1978 | F2 | McHenry, Illinois | 2 mi | 100 yd | 0 | 0 | $250K |
| June 19, 2009 | EF1 | McHenry, Illinois | 0.74 mi | 75 yd | 0 | 0 | $75K |
| May 19, 1996 | F1 | McHenry, Illinois | 0.8 mi | 50 yd | 0 | 0 | N/A |
| April 9, 2015 | EF1 | McHenry, Illinois | 0.32 mi | 30 yd | 0 | 0 | N/A |
| May 17, 2017 | EF1 | McHenry, Illinois | 1.94 mi | 100 yd | 0 | 0 | N/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.