Emergency Alert System test to hit phones, radios, TVs today. Here's what you can expect

The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite, or broadcast television, and both AM/FM and satellite radio and phones.The EAS became operational on January 1, 1997, after being approved by the Federal Communications Commission (FCC) in November 1994,[1] replacing the Emergency Broadcast System (EBS), and largely the Emergency Override S