CBS 2 Chicago wbbm7801059 670 The Score
LIVE VIDEO: Watch the Lollapalooza webcast LIVE from the festival, courtesy of 93XRT! WATCH NOW »

EF Scale

The damage is surveyed along Elgin Avenue after a tornado struck on November 17, 2013 in Washington, Illinois. Several tornadoes touched down across the Midwest today with at least three people reported dead in Illinois. (Credit: Tasos Katopodis/Getty Images)

History Of Powerful Tornadoes In Illinois

At least two tornadoes that raked Illinois on Sunday were rated EF-4, which is extremely rare for our area–especially this late in the season.

11/18/2013

Cars lie around the northeast corner of Plaza Towers Elementary school after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma. The town reported a tornado of at least EF4 strength and two miles wide that touched down yesterday killing at least 24 people and leveling everything in its path. (Photo by Brett Deering/Getty Images)

History Of Tornadoes In Chicago Area

Twisters with the kind of force that flattened Moore, Okla., have hit the Chicago area in the past, and have been extremely deadly.

05/21/2013