Warning Sirens Sound Across Chicago as Tornadoes Approach The National Weather Service said a tornado touched down near Chicago’s O’Hare International Airport on Wednesday, disrupting hundreds ...

Tornado sirens sounded at least twice across Chicago, warning people to take cover and ringing through the city’s buildings. Lynn Becker, a longtime Chicago resident, posted video to Twitter ...

But the tornado sirens in Valley View — where seven people were killed and more than 100 injured — were not working in the small town Saturday night. Categorized as a high EF-2 by the National ...