EF1 tornado in Lee County, Illinois

This tornado developed just south of the town center of Sublette snapping multiple utility poles as it crossed US Rt. 52. The tornado strengthened as it progressed into the town of West Brooklyn. There, it downed several large trees, folded an approximately 120-foot tall tower, and tore the roof off of a bank in downtown West Brooklyn. A wooden beam from the roof of the bank impaled a nearby garage roof to the north-northeast of the bank. The tornado then lifted north of Shaw Rd just west of Carnahan Rd just over 2 miles northeast 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.