EF1 tornado in Iroquois County, Illinois

A brief tornado occurred south of Stockland dropping just south of E 600 North Rd and east of N 2700 East Rd. The storm damaged trees and power poles and destroyed a small farm outbuilding. The tornado lifted after only a few minutes east of N 3100 East Rd and south of E 880 North Rd just west of the Illinois-Indiana state line.

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.