The drill will activate sirens and phone notifications from 10 a.m. to 12:30 p.m., with officials urging residents not to call 911 during the test.

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It is only a test. Residents shouldn't be alarmed on Thursday, April 2, when cell phones, television screens and radio start buzzing with alerts during a statewide test of public warning systems in El ...

Add Yahoo as a preferred source to see more of our stories on Google. A woman holds a phone in this file photo. (Mireya Acierto/Getty Images) The Texas Division of Emergency Management will be sending ...

Add Yahoo as a preferred source to see more of our stories on Google. It is a test. It is only a test. Residents shouldn't be alarmed on Thursday, April 2, when cell phones, television screens and ...

Don't freak out if your phone buzzes Thursday, Texas.

Sacramento County will test its emergency alert system this week - and officials want residents to be ready.

UNITED STATES (CBS) — Your electronic devices may alarm you today — but there’s a reason for that. A nationwide test of the federal emergency alert system will be broadcast at approximately 2:20 p.m.