A tornado watch means there are favorable conditions for a tornado, so people should keep a close eye on the developing ...

Before Chicago, Marissa was a general assignment ... Heather Marx, of nearby DeMotte, Indiana, likewise said she heard air-raid sirens for a tornado warning, and barely had time to get to safety.

Don't be alarmed if you hear tornado sirens sounding around Des Moines on Saturday, it's only a test. Here's what to know about how tornado sirens work in the metro. Communities in Dallas and Polk ...

But if the screaming sirens and looming threats to life ... skies darkened and thunder boomed as severe weather moved into the Chicago region. A tornado watch was issued for 10 counties in ...

Several storm chasers, including FOX Weather Storm Tracker Brandon Copic, captured video of a tornado forming then rolling ...

A lightning strike knocked out a tornado siren in Spaulding, just when the community needed it most. The siren didn't sound during Saturday night's deadly storm, according to Hughes County ...

Footage by Mike Hockett shows dozens of people sheltering and making their way downstairs as tornado sirens sound. "Stuck in Nashville for a third night after all flights to Chicago were canceled ...