EF2 tornado in Lee County, Illinois

The tornado touched down in the Woodhaven Lakes campground south of Amboy. There, multiple campers were damaged by the tornado including two that were rolled. Farther along its northeastward track, two trees had fallen onto a home destroying it. The tornado appeared to have reached its maximum intensity with wind speeds estimated at 115 mph shortly after crossing US Hwy 52 where it destroyed a large garage and snapped several trees at their trunks. Several dozen other large trees were snapped and many branches sheared off along its path. Toward the end of its lifespan, the tornado also did minor damage to an outbuilding before lifting near Butler Hill Rd north of West Brooklyn.

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.