Tornado History
Slope Tornado History
This county-level tornado history page focuses on Slope, North Dakota. The records below identify 11 tornadoes from 1960 through 2010, including a highest listed rating of F1 (Moderate damage). NOAA damage estimates in this group total at least $93K, with 0 deaths and 0 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Slope, North Dakota
Top local patterns from the historical tornado records in this group.
Average 0.2 tornadoes per year (0.0/yr in last decade)
July is the peak tornado month with 4 recorded events
Deadliest tornado: Unknown in Slope, North Dakota with 0 deaths
1983 was the most active year with 2 tornadoes
The 1990s had the most tornado activity (3 events)
Longest tornado: 15.5 miles in Slope, North Dakota
Widest tornado: 50.0 yards in Slope, North Dakota
Most tornadoes in one day: 2 on Jul 17, 1983
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Slope, North Dakota, July is the most active month with 4 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1983 was the most active year with 2 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 2010 with at least $30K 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 Slope, North 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 19, 1972 | F1 | Slope, North Dakota | 15.5 mi | 50 yd | 0 | 0 | $2K |
| June 8, 1991 | F1 | Slope, North Dakota | 0.1 mi | 7 yd | 0 | 0 | $2K |
| September 9, 2010 | EF0 | Slope, North Dakota | 0.82 mi | 40 yd | 0 | 0 | $30K |
| June 8, 1991 | F0 | Slope, North Dakota | 0.1 mi | 10 yd | 0 | 0 | $25K |
| June 20, 1999 | F0 | Slope, North Dakota | 2 mi | 25 yd | 0 | 0 | $5K |
| July 17, 1983 | F0 | Slope, North Dakota | 0.3 mi | 10 yd | 0 | 0 | $30 |
| July 17, 1983 | F0 | Slope, North Dakota | 0.3 mi | 10 yd | 0 | 0 | $30 |
| July 3, 2001 | F0 | Slope, North Dakota | 7 mi | 40 yd | 0 | 0 | N/A |
| July 26, 2010 | EF0 | Slope, North Dakota | 5.34 mi | 30 yd | 0 | 0 | N/A |
| May 23, 1965 | Unknown | Slope, North Dakota | 0 mi | 33 yd | 0 | 0 | $25K |
| August 6, 1960 | Unknown | Slope, North Dakota | 0 mi | 33 yd | 0 | 0 | $2K |
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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.