The May 21, 1957 tornado
F4Chisago County, Minnesota
An F4 tornado on a 9.2-mile path that injured 2. It was one of 18 tornadoes recorded in the U.S. that day, 6 of them rated F3/EF3 or stronger.
Watch how it happened Part of the outbreak of May 21, 1957: 18 tornadoes in 5 statesF4 tornado · May 21, 1957
How it happened
Follow the tornado’s recorded path from touchdown to lift-off.
The tornado
- Rating
- F4
- Fujita scale
- Path length
- 9.2 mi
- Width up to 100 yards
- Killed
- 0
- Along the whole path
- Injured
- 2
- Along the whole path
- Date and time
- Tuesday, May 21, 1957
- 1:00 PM CST
Counties on its path
Other notable tornadoes that day
- F3, Washington County8 killed
- F4, Carter County7 killed
Storm Prediction Center severe weather database. Path drawn as a straight line from the recorded start to end point.