The April 21, 1967 tornado

F4Cook County, Illinois

An F4 tornado on a 15.0-mile path that killed 33 and injured 500. It was one of 46 tornadoes recorded in the U.S. that day, 8 of them rated F3/EF3 or stronger.

Watch how it happened Part of the outbreak of April 21, 1967: 46 tornadoes in 6 states

F4 tornado · April 21, 1967

How it happened

Follow the tornado’s recorded path from touchdown to lift-off.

About this replay

Distance travelled—Historical replay — even pace

Distance—of 15.0 miles

Now in—

RatingF4

Path milestones

Damage pathWidened for visibility; recorded maximum width 200 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 along the path were not logged, so the replay moves at an even pace. Towns are today’s Census places.

The tornado

Rating: F4; Fujita scale
Path length: 15.0 mi; Width up to 200 yards
Killed: 33; Along the whole path
Injured: 500; Along the whole path
Date and time: Friday, April 21, 1967; 5:24 PM CST
That day: 46; tornadoes in the U.S.; every one, with a replay of the day

Counties on its path

Cook CountyIL

Other notable tornadoes that day

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