Tornado outbreak of April 21, 1967
Preview warning: This article seems to be about a tornado outbreak. If this infobox only covers the outbreak itself, please use the
|duration= parameter from the infobox header or from another 'History' box instead.Aerial view of tornado damage in Oak Lawn | |
| Meteorological history | |
|---|---|
| Duration | April 21, 1967 |
| Tornado outbreak | |
| Tornadoes | 45 |
| Maximum rating | F4 tornado |
| Overall effects | |
| Fatalities | 58 |
| Injuries | 1,418 |
| Damage | $56.432 million (1967 USD); 536.730 million (2025 USD) |
| Areas affected | Midwestern United States |
Part of the tornado outbreaks of 1967 | |
A destructive tornado outbreak affected much of the Midwestern United States on April 21, 1967, in particular the towns of Belvidere and Oak Lawn, Illinois, United States. It was the largest tornado outbreak of 1967 and has been described by NWS Chicago as "Northern Illinois' worst tornado disaster". 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.