The June 20, 1957 tornado

F5Cass and Clay counties, Minnesota and North Dakota

An F5 tornado on a 52.4-mile path that killed 10 and injured 103. It was one of 5 tornadoes recorded in the U.S. that day.

Watch how it happened

F5 tornado · June 20, 1957

How it happened

Follow the tornado’s path, minute by minute.

About this replay

Local time (CST)—Historical replay — logged times

Distance—of 52.4 miles

Now in—

RatingF5

Path milestones

Damage pathWidened for visibility; recorded maximum width 500 yards

TownsSized by population today; those within 3 miles flash as it passes

Counties on the pathLit as the tornado enters them

Source: Storm Prediction Center path, drawn through NOAA Storm Events county segments. Times as logged by the National Weather Service. Towns are today’s Census places.

The tornado

Rating: F5; Fujita scale
Path length: 52.4 mi; Width up to 500 yards
Killed: 10; Along the whole path
Injured: 103; Along the whole path
Date and time: Thursday, June 20, 1957; 6:40 PM CST
That day: 5; tornadoes in the U.S.; more on this date

Counties on its path

Cass CountyND
Clay CountyMN

Storm Prediction Center severe weather database. Path drawn as a straight line from the recorded start to end point.