Event narrative (NOAA)
This tornado crossed into Boone County south of Cherry Valley from Winnebago County. The tornado, which originated in Ogle County, traversed northeastward doing minor damage to farms. As it moved through the town of Belvidere, the storm produced multiple instances of damage to businesses, homes, and trees. Included in this is the partial roof collapse of the Apollo Theatre downtown which resulted in one fatality and 40 injuries. From there, the tornado would travel another 7 miles doing additional damage to trees before lifting near Orth Rd just west of the Boone-McHenry county line.
Other notable tornado events in Illinois
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.