Tornado History
Johnson Tornado History
This county-level tornado history page focuses on Johnson, Wyoming. The records below identify 21 tornadoes from 1971 through 2023, including a highest listed rating of EF2 (Considerable damage). NOAA damage estimates in this group total at least $26K, with 0 deaths and 2 injuries recorded across the listed events.
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Key Tornado Statistics
Key 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 14 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 (10 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 14 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
This map covers the wider location—not your exact property.Measure the closest recorded track to a street address in or near Johnson, Wyoming.
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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 |
|---|---|---|---|---|---|---|---|
| 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 |
| June 3, 1971 | F1 | Johnson, Wyoming | 1 mi | 27 yd | 0 | 0 | $2K |
| 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 |
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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.