Type | Tornado outbreak |
---|---|
Duration | April 21, 1967 |
Tornadoes confirmed | 45 |
Max. rating1 | F4 tornado |
Fatalities | 58 fatalities, 1,418 injuries |
Damage | $56.432 million (1967 USD)[1] |
Areas affected | Midwestern United States |
Part of the tornado outbreaks of 1967 1Most severe tornado damage; see Fujita scale |
The 1967 Oak Lawn tornado outbreak was a destructive tornado outbreak and severe weather event that occurred on April 21, 1967, across the central Midwest, in particular the towns of Belvidere and Oak Lawn, Illinois, United States. Locally known as 'Black Friday,' it was the largest tornado outbreak of 1967 and has been described by NWS Chicago as "Northern Illinois' worst tornado disaster".[2] The outbreak produced numerous and significant (F2+) tornadoes, with ten of them in Illinois alone. Included was one of just six documented violent (F4/F5) tornadoes in the Chicago metropolitan area since the area was first settled.[3][4]
Grazulis1
was invoked but never defined (see the help page).