Tornado History
Portage Tornado History
This county-level tornado history page focuses on Portage, Wisconsin. The records below identify 25 tornadoes from 1951 through 2025, including a highest listed rating of F4 (Devastating damage). NOAA damage estimates in this group total at least $3.9M, with 2 deaths and 4 injuries recorded across the listed events.
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Key Tornado Statistics
Key Tornado Facts for Portage, Wisconsin
Top local patterns from the historical tornado records in this group.
Average 0.3 tornadoes per year (0.2/yr in last decade)
June is the peak tornado month with 9 recorded events
Deadliest tornado: F2 in Portage, Wisconsin with 2 deaths
1976 was the most active year with 4 tornadoes
The 1970s had the most tornado activity (7 events)
Longest tornado: 19.08 miles in Portage, Wisconsin
Widest tornado: 700.0 yards in Portage, Wisconsin
Most tornadoes in one day: 3 on Jun 23, 2004
Monthly Distribution
Shows tornado frequency across months of the year, highlighting seasonal patterns and peak tornado periods.
Summary: In Portage, Wisconsin, June is the most active month with 9 tornadoes.
Annual Tornado Trend
Shows year-by-year tornado counts, making active years and quiet stretches easier to spot.
Summary: 1976 was the most active year with 4 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 2011 with at least $1.8M 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 Portage, Wisconsin.
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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 |
|---|---|---|---|---|---|---|---|
| September 26, 1951 | F4 | Portage, Wisconsin | 4.1 mi | 100 yd | 0 | 0 | $250K |
| April 3, 1956 | F2 | Portage, Wisconsin | 18.2 mi | 100 yd | 2 | 2 | $250K |
| April 27, 1984 | F2 | Portage, Wisconsin | 5.5 mi | 20 yd | 0 | 0 | $250K |
| May 16, 1992 | F2 | Portage, Wisconsin | 11 mi | 400 yd | 0 | 0 | $250K |
| August 22, 1964 | F2 | Portage, Wisconsin | 6.4 mi | 333 yd | 0 | 0 | $25K |
| July 7, 1970 | F2 | Portage, Wisconsin | 2 mi | 100 yd | 0 | 0 | $25K |
| June 12, 1976 | F2 | Portage, Wisconsin | 0.2 mi | 50 yd | 0 | 0 | $25K |
| June 13, 1976 | F2 | Portage, Wisconsin | 0.3 mi | 50 yd | 0 | 0 | $2K |
| May 22, 2011 | EF1 | Portage, Wisconsin | 19.08 mi | 700 yd | 0 | 0 | $1.8M |
| March 30, 1982 | F1 | Portage, Wisconsin | 10 mi | 33 yd | 0 | 0 | $250K |
| October 8, 1992 | F1 | Portage, Wisconsin | 2 mi | 100 yd | 0 | 0 | $250K |
| May 16, 1992 | F1 | Portage, Wisconsin | 1.2 mi | 400 yd | 0 | 0 | $250K |
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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.