1967 Oak Lawn tornado outbreak

1967 Oak Lawn tornado outbreak
Aerial view of several blocks of home foundations stripped bare with debris launched everywhere
Aerial view of tornado damage in Oak Lawn
TypeTornado outbreak
DurationApril 21, 1967
Tornadoes
confirmed
45
Max. rating1F4 tornado
Fatalities58 fatalities, 1,418 injuries
Damage$56.432 million (1967 USD)[1]
Areas affectedMidwestern United States

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]

  1. ^ Storm Events Database, Tornado Event Reports: April 21, 1967
  2. ^ "One of the worst tornado outbreaks for northern IL with three F4s devastates Belvidere, Lake Zurich, & Oak Lawn, IL". National Weather Service Chicago, Illinois.
  3. ^ Tornado History Project. "Tornado Map". Archived from the original on November 23, 2008. Retrieved February 2, 2013.
  4. ^ Cite error: The named reference Grazulis1 was invoked but never defined (see the help page).