Sacramento County will test its system Thursday; officials urge residents to sign up for warnings about fires, floods, ...

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.

The government tested a new national alert system that would let presidents send out emergency messages to phones all over the country. WASHINGTON -- This is why you may have gotten a notification ...

Find out how California’s MyShake earthquake app works, what to expect from emergency test alerts and how to set up your ...