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 ...

Twice this week, tornado sirens incorrectly went off in Winnebago County. The first false alarm was on Saturday, and the ...

First installed in the 1950s, they were developed for Cold War air raid warnings, but in the 1970s, the sirens transitioned to outdoor warning alerts.

CHICAGO (CBS) -- Severe and dangerous storms brought tornadoes and hail to Chicago ... hit the windows really hard like nearby, and the sirens going off in the background," continued Mancilla.

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 ...

Ionia County's tornado sirens were accidentally activated during clean-up efforts after a pipe burst at the dispatch center.