EF1 tornado in La Salle County, Illinois

A tornado with estimated peak winds of 110 mph touched down near Sandy Creek, southwest of the intersection of N 8th Road and E 8th Road. The tornado moved northeast through fields and crossed E 9th Road. The tornado crossed Route 17 where it snapped large tree limbs off the top of a tree and blew down a utility pole. Windows were also blown out of a nearby house. The tornado destroyed multiple machine sheds in the 900 block of Route 17 with debris strewn almost a mile downstream. Storm chaser video showed at least three fast moving sub-vortices as the tornado continued northeast crossing E 10th Road. The tornado then reached its maximum width of nearly 500 yards with significant cycloidal markings in a field east of E 10th Road. The tornado continued moving northeast until it ended in a field south of N 10th Road. High resolution satellite imagery was used to determine most of the path of this tornado.

Severe thunderstorms moved across northern Illinois during the afternoon and evening of June 11th producing wind damage, localized flooding and several tornadoes.