Tornado History
Hamill Tornado History
This location page summarizes tornado records that list Hamill, South Dakota as a begin or end location. The dataset includes 3 matching records from 1999 through 2018. The strongest matching rating is EF1 (Moderate damage), the latest matching tornado is July 18, 2018, and minimum reported property damage totals N/A.
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Key Tornado Statistics
Key Tornado Facts for Hamill, South Dakota
Top local patterns from the historical tornado records in this group.
Average 0.1 tornadoes per year (0.1/yr in last decade)
July is the peak tornado month with 2 recorded events
Deadliest tornado: F0 in Hamill, South Dakota with 0 deaths
1999 was the most active year with 1 tornadoes
The 1990s had the most tornado activity (1 events)
Longest tornado: 1 miles in Hamill, South Dakota
Widest tornado: 30.0 yards in Hamill, South Dakota
Most tornadoes in one day: 1 on May 9, 1999
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Hamill, South Dakota, July is the most active month with 2 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1999 was the most active year with 1 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 1999 with at least N/A 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 Hamill, 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 |
|---|---|---|---|---|---|---|---|
| July 18, 2018 | EF1 | Tripp, South Dakota | 0.21 mi | 20 yd | 0 | 0 | N/A |
| May 9, 1999 | F0 | Tripp, South Dakota | 1 mi | 10 yd | 0 | 0 | N/A |
| July 28, 2008 | EF0 | Tripp, South Dakota | 0.02 mi | 30 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.