A tornado warning bulletin for Kendall County came in from the National Weather Service at 5:15 p.m., but a siren at an Oswego subdivision was silent when the county activated the warning system.
The storm system Tuesday evening produced funnel clouds and caused serious damage in many areas, and also left hundreds of thousands without power.
A severe line of storms capable of producing rain-wrapped tornadoes — and wind gusts of up to 80 mph — has been spotted in the western suburbs and appears to be heading to Chicago, the National Weather Service warns.
A tornado warning has been issued for parts of Will and Grundy counties southwest of Chicago.
Several parts of the Chicago area were placed under tornado warnings Tuesday, and at least one tornado reportedly touched down, as the Great Lakes Cyclone batters the region.