EF1 tornado in Ogle County, Illinois

This tornado began southeast of Lanark in Carroll County near Harvest Rd west of Shannon Rte. It tracked to the northeast crossing into rural Ogle County at N Brookville Rd north of W White Oak Rd. Shortly before dissipating, the storm crossed into Stephenson County at N Mt. Vernon Rd. It then lifted as it approached Florence Rd west of IL Rt. 26 S. Extensive damage was done to several farm buildings and a few trees were downed as well.

During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state. The NWS Chicago office tied a record for the most tornadoes to occur in a single calendar day within the office's county warning area with 22, 17 of which occurred in Illinois. One EF-2 tornado occurred in south-central Lee County and two others in northwest Indiana. Some of the more notable damage includes multiple semi trucks blown over, a garage that had been completely destroyed southeast of Amboy, and the partial roof collapse of the Apollo Theatre in Belvidere which unfortunately resulted in one fatality and 40 injuries.