The April 21, 1967 tornado

F4McHenry and Lake counties, Illinois

An F4 tornado on a 8.8-mile path that killed 1 and injured 100. 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 8.8 miles

Now in—

RatingF4

Path milestones

Damage pathWidened for visibility; recorded maximum width 150 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: F4; Fujita scale
Path length: 8.8 mi; Width up to 150 yards
Killed: 1; Along the whole path
Injured: 100; Along the whole path
Date and time: Friday, April 21, 1967; 5:00 PM CST
That day: 46; tornadoes in the U.S.; every one, with a replay of the day

Counties on its path

McHenry CountyIL
Lake 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.