While you may hear Dallas' outdoor warning system during a severe weather event, the sirens don’t always signal danger.

Two years later, 30 new sirens are standing tall across town. The $1.3 million investment brings state-of-the-art sirens to the city. They sound, rotate, and even have flashing lights for those ...

The siren test runs from 1.30pm to 4.30 pm. It includes the general alarm and the water alarm in areas below dams.

Every year, on the first Wednesday in February, the sound of 7,200 sirens dotted around Switzerland fills the air, startling anyone who doesn't real ...