During the catastrophic flash flooding in Texas, many residents were asleep just after 4 a.m. when the National Weather Service in Austin sent out a flash flood emergency bulletin. "This is a FLASH ...

The warning activated the wireless emergency alert system to notify people of an extremely dangerous situation.

A tsunami warning from the National Weather Service revealed an uneven response by Bay Area cities, counties and emergency services on Thursday, after a magnitude 7.0 earthquake struck off the coast ...

Brown University has outdoor emergency warning sirens, known as BrownSiren, but they did not go off during Saturday's ...