The April 21, 1967 tornado

F4Boone and McHenry counties, Illinois

An F4 tornado on a 25.5-mile path that killed 24 and injured 450. 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 path, minute by minute.

About this replay

Local time (CST)—Historical replay — logged times

Distance—of 25.5 miles

Now in—

RatingF4

The tornado

Rating: F4; Fujita scale
Path length: 25.5 mi; Width up to 1,200 yards
Killed: 24; Along the whole path
Injured: 450; Along the whole path
Date and time: Friday, April 21, 1967; 3:50 PM CST
That day: 46; tornadoes in the U.S.; every one, with a replay of the day

Counties on its path

Boone CountyIL
McHenry CountyIL

Other notable tornadoes that day

F4, Linn County59 mi
F4, McHenry County1 killed
F4, Cook County33 killed
F4, Clinton County12 mi

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