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Tornado History
Johnson Tornado History
This county-level tornado history page focuses on Johnson, Wyoming. The records below identify 20 tornadoes from 1973 through 2023, including a highest listed rating of EF2 (Considerable damage). NOAA damage estimates in this group total at least $23K, with 0 deaths and 2 injuries recorded across the listed events.
Key Tornado Statistics
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Check any addressKey Tornado Facts for Johnson, Wyoming
Top local patterns from the historical tornado records in this group.
Average 0.4 tornadoes per year (0.4/yr in last decade)
June is the peak tornado month with 13 recorded events
Deadliest tornado: F1 in Johnson, Wyoming with 0 deaths
1979 was the most active year with 5 tornadoes
The 1970s had the most tornado activity (9 events)
Longest tornado: 4.5 miles in Johnson, Wyoming
Widest tornado: 300.0 yards in Johnson, Wyoming
Most tornadoes in one day: 3 on Jun 18, 1979
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Johnson, Wyoming, June is the most active month with 13 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1979 was the most active year with 5 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 2017 with at least $10K 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 12, 2017 | EF2 | Johnson, Wyoming | 1.58 mi | 250 yd | 0 | 0 | $10K |
| June 1, 2018 | EF2 | Johnson, Wyoming | 1.03 mi | 300 yd | 0 | 0 | N/A |
| August 11, 1999 | F1 | Johnson, Wyoming | 0.2 mi | 75 yd | 0 | 0 | $8K |
| August 14, 1974 | F1 | Johnson, Wyoming | 1.5 mi | 67 yd | 0 | 2 | $2K |
| June 19, 2019 | EF1 | Johnson, Wyoming | 4.09 mi | 250 yd | 0 | 0 | $2K |
| May 9, 1977 | F1 | Johnson, Wyoming | 4.5 mi | 27 yd | 0 | 0 | $250 |
| June 20, 1977 | F1 | Johnson, Wyoming | 0 mi | 33 yd | 0 | 0 | $30 |
| July 23, 1973 | F1 | Johnson, Wyoming | 0 mi | 33 yd | 0 | 0 | N/A |
| July 5, 1982 | F0 | Johnson, Wyoming | 0.2 mi | 50 yd | 0 | 0 | $250 |
| June 18, 1979 | F0 | Johnson, Wyoming | 0.3 mi | 100 yd | 0 | 0 | N/A |
| June 18, 1979 | F0 | Johnson, Wyoming | 0 mi | 33 yd | 0 | 0 | N/A |
| June 18, 1979 | F0 | Johnson, Wyoming | 0 mi | 33 yd | 0 | 0 | N/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.