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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.

Key Tornado Statistics

Total Tornadoes27
Total Deaths0
Total Injuries9
Property Damage$10.8M
Avg Length6.3 mi
Avg Width128 yd

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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.

January
February
March
April
May
June
July
August
September
October
November
December

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.

3210

Summary: 1962 was the most active year with 3 recorded tornadoes.

Tornado Intensity Distribution

Shows the breakdown of tornadoes by EF/F rating.

F0
EF0
F1
EF1
F2
EF2
F3
Unknown

Summary: F0 tornadoes are the most common in this group, with 7 recorded events.

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.

$7.0M$700K$70K$0

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

F3 May 8, 19651965F3 May 15, 19621962F2 August 9, 20022002F2 June 4, 19661966F2 August 1, 19541954F2 June 20, 19681968EF2 July 28, 20252025EF1 August 6, 20192019F1 May 21, 19621962F1 May 27, 19591959F1 September 4, 19851985EF1 July 28, 20252025F0 June 28, 19521952F0 June 12, 19621962F0 May 28, 1985F0 May 30, 1985F0 June 22, 1999F0 June 9, 2003F0 June 9, 2003EF0 May 5, 2007EF0 May 5, 2007EF0 July 23, 2010EF0 July 23, 2010EF0 June 30, 2019EF0 July 28, 2025Unknown June 18, 1967Unknown June 18, 1967© OpenStreetMap contributors

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.

DateRatingAreaLengthWidthDeathsInjuriesMin. property damage
May 8, 1965F3Gregory, South Dakota1.5 mi20 yd00$2K
May 15, 1962F3Gregory, South Dakota0 mi33 yd00N/A
August 9, 2002F2Gregory, South Dakota2 mi200 yd00$1.0M
June 4, 1966F2Gregory, South Dakota1 mi800 yd00$250K
August 1, 1954F2Gregory, South Dakota14.2 mi33 yd02$250
June 20, 1968F2Gregory, South Dakota33.5 mi33 yd00N/A
July 28, 2025EF2Gregory, South Dakota7.43 mi175 yd00N/A
August 6, 2019EF1Gregory, South Dakota3.82 mi75 yd02$7.0M
May 21, 1962F1Gregory, South Dakota47.9 mi33 yd02$2.5M
May 27, 1959F1Gregory, South Dakota0 mi33 yd03$25K
September 4, 1985F1Gregory, South Dakota3 mi50 yd00$2K
July 28, 2025EF1Gregory, South Dakota11.66 mi150 yd00N/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.