While tornado sirens and weather alerts are triggered by the same warning, they're two separate systems.

Whether an alert comes from an outdoor siren or a cellphone, it starts with information from the National Weather Service.

When a tornado watch or warning is issued, outdoor sirens across Milwaukee County signal the potential danger.

COMAL COUNTY, Texas – Sirens echoed throughout Comal County on Thursday as part of a routine test of the area’s Emergency Alert System, designed to warn residents of potential dangers along the ...

The Sirens are the centerpiece for what’s expected to be another historic night at the World’s Most Famous Arena on Saturday ...

You can expect to hear tornado sirens in the Des Moines area today. Learn what it means when they go off and why they're in ...

Sirens sounded in multiple Chicago suburbs during Thursday’s storms, in some cases multiple times, despite no tornado ...