 Placeholder. | |
| Meteorological history | |
|---|---|
| Formed | April 21, 1967, 11:02 p.m. CDT (UTC−05:00) |
| F4 tornado | |
| on the Fujita scale | |
| Highest winds | 207–260 mph (333–418 km/h) |
| Overall effects | |
| Fatalities | 24 |
| Injuries | 500 |
| Areas affected | Boone County, Illinois |
Part of the 1967 Oak Lawn tornado outbreak | |
On the afternoon of April 21, 1967, a violent F4 tornado impacted the cities of Belvidere and Harvard in Illinois.