Mount Vernon tornado tracked 20 miles, far exceeding typical Illinois storms

A June 11 tornado in Mount Vernon, Illinois, remained on the ground for roughly 20 miles—well above the median for state tornadoes. The extended track, consistent with a significant mesocyclone, destroyed 300 homes and 50 businesses concentrated in the city's southeast. The dual commercial-residential damage will complicate recovery, as rebuilding timelines and funding streams differ between sectors.