The August 31, 1977 tornado
F4Marathon County, Wisconsin
An F4 tornado on a 31.8-mile path that injured 10. It was one of 2 tornadoes recorded in the U.S. that day.
Watch how it happenedF4 tornado · August 31, 1977
How it happened
Follow the tornado’s recorded path from touchdown to lift-off.
The tornado
- Rating
- F4
- Fujita scale
- Path length
- 31.8 mi
- Width up to 1,000 yards
- Killed
- 0
- Along the whole path
- Injured
- 10
- Along the whole path
- Date and time
- Wednesday, August 31, 1977
- 6:15 PM CST
Counties on its path
Storm Prediction Center severe weather database. Path drawn as a straight line from the recorded start to end point.