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Tornado History
Grundy Tornado History
This county-level tornado history page focuses on Grundy, Illinois. The records below identify 23 tornadoes from 1958 through 2024, including a highest listed rating of EF3 (Severe damage). NOAA damage estimates in this group total at least $61.9M, with 0 deaths and 14 injuries recorded across the listed events.
Key Tornado Statistics
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Check any addressKey Tornado Facts for Grundy, Illinois
Top local patterns from the historical tornado records in this group.
Average 0.3 tornadoes per year (0.7/yr in last decade)
June is the peak tornado month with 8 recorded events
Deadliest tornado: F1 in Grundy, Illinois with 0 deaths
2015 was the most active year with 3 tornadoes
The 2010s had the most tornado activity (9 events)
Longest tornado: 11.4 miles in Grundy, Illinois
Widest tornado: 1,320.0 yards in Grundy, Illinois
Most tornadoes in one day: 3 on Jun 22, 2015
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Grundy, Illinois, June is the most active month with 8 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 2015 with at least $25.1M 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 22, 2015 | EF3 | Grundy, Illinois | 7.7 mi | 1320 yd | 0 | 7 | $25.0M |
| November 12, 1965 | F2 | Grundy, Illinois | 11.4 mi | 120 yd | 0 | 0 | $25.0M |
| November 17, 2013 | EF2 | Grundy, Illinois | 4.42 mi | 200 yd | 0 | 5 | $10.8M |
| April 19, 1973 | F2 | Grundy, Illinois | 0 mi | 33 yd | 0 | 0 | $250K |
| May 20, 1975 | F2 | Grundy, Illinois | 2 mi | 50 yd | 0 | 1 | $250K |
| April 5, 1988 | F2 | Grundy, Illinois | 7 mi | 50 yd | 0 | 0 | N/A |
| July 15, 2024 | EF2 | Grundy, Illinois | 6.6 mi | 325 yd | 0 | 0 | N/A |
| April 27, 1984 | F1 | Grundy, Illinois | 2.7 mi | 150 yd | 0 | 0 | $250K |
| May 8, 1988 | F1 | Grundy, Illinois | 1 mi | 10 yd | 0 | 0 | $250K |
| June 22, 2015 | EF1 | Grundy, Illinois | 5.93 mi | 150 yd | 0 | 0 | $50K |
| June 22, 2015 | EF1 | Grundy, Illinois | 0.77 mi | 100 yd | 0 | 0 | $50K |
| June 8, 1958 | F1 | Grundy, Illinois | 1 mi | 33 yd | 0 | 0 | $2K |
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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.