EF1 tornado in Kane County, Illinois

A tornado with estimated peak winds of 95 mph touched down just inside the entrance to the Big Rock Campground near Granart Road. Extensive, primarily EF-0, tree damage occurred along the path of this tornado. The tornado was likely at peak intensity as it moved through Sugar Grove, just south of Route 30. Several homes had minor roof damage near Ridgeview Lane. Several healthy trees were uprooted and snapped. The tornado passed over the Sugar Grove Fire Department building near Municipal Drive which suffered minor structural damage, some of which appeared to be caused by flying tree debris. An approximately 2,000 pound partial roof for firefighter training was lifted and moved a couple of feet. Additional minor structural damage occurred at some residences in nearby subdivisions. The tornado continued moving east northeast, crossing Route 56 twice, before moving into the west side of Aurora. The tornado crossed Route 83 where it produced sporadic shingle and fascia damage along with continued tree damage. Several fences were also blown down. The tornado appeared to end just east of Edgelawn Drive.

A derecho moved across northern Illinois during the evening of July 15th producing widespread wind damage and 30 tornadoes in northeast Illinois. One of these tornadoes crossed into northwest Indiana. At the height of the storms, 430,000 customers lost power with some power not restored for four days, on July 19th.