Tornado History
Gregory Tornado History
This county-level tornado history page focuses on Gregory, South Dakota. The records below identify 27 tornadoes from 1952 through 2025, including a highest listed rating of F3 (Severe damage). NOAA damage estimates in this group total at least $10.8M, with 0 deaths and 9 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Gregory, South Dakota
Top local patterns from the historical tornado records in this group.
Average 0.4 tornadoes per year (0.5/yr in last decade)
June is the peak tornado month with 10 recorded events
Deadliest tornado: F0 in Gregory, South Dakota with 0 deaths
1962 was the most active year with 3 tornadoes
The 1960s had the most tornado activity (8 events)
Longest tornado: 47.9 miles in Gregory, South Dakota
Widest tornado: 817.0 yards in Gregory, South Dakota
Most tornadoes in one day: 3 on Jul 28, 2025
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Gregory, South Dakota, June is the most active month with 10 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1962 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 2019 with at least $7.0M 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 Gregory, South Dakota.
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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 |
|---|---|---|---|---|---|---|---|
| May 8, 1965 | F3 | Gregory, South Dakota | 1.5 mi | 20 yd | 0 | 0 | $2K |
| May 15, 1962 | F3 | Gregory, South Dakota | 0 mi | 33 yd | 0 | 0 | N/A |
| August 9, 2002 | F2 | Gregory, South Dakota | 2 mi | 200 yd | 0 | 0 | $1.0M |
| June 4, 1966 | F2 | Gregory, South Dakota | 1 mi | 800 yd | 0 | 0 | $250K |
| August 1, 1954 | F2 | Gregory, South Dakota | 14.2 mi | 33 yd | 0 | 2 | $250 |
| June 20, 1968 | F2 | Gregory, South Dakota | 33.5 mi | 33 yd | 0 | 0 | N/A |
| July 28, 2025 | EF2 | Gregory, South Dakota | 7.43 mi | 175 yd | 0 | 0 | N/A |
| August 6, 2019 | EF1 | Gregory, South Dakota | 3.82 mi | 75 yd | 0 | 2 | $7.0M |
| May 21, 1962 | F1 | Gregory, South Dakota | 47.9 mi | 33 yd | 0 | 2 | $2.5M |
| May 27, 1959 | F1 | Gregory, South Dakota | 0 mi | 33 yd | 0 | 3 | $25K |
| September 4, 1985 | F1 | Gregory, South Dakota | 3 mi | 50 yd | 0 | 0 | $2K |
| July 28, 2025 | EF1 | Gregory, South Dakota | 11.66 mi | 150 yd | 0 | 0 | N/A |
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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.