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.

Ever wondered why your phone suddenly shows emergency alerts during storms, floods or earthquakes? Know how disaster warning ...

Mobile phone holders nationwide are being warned to expect a test Emergency Mobile Alert from NZ Civil Defence tonight.

Millions of mobile users received a loud emergency alert message marked Extremely Severe Alerts. Know why the Government of India sent the test notification, what Cell Broadcast means, and whether any ...