RicoGregg said:
The EAS, also known in the past as Civil Defense, CONELRAD, and EBS, is a legacy of the Cold War era.
"Civil Defense" was the banner that CONELRAD was created under; it had one purpose and that was to respond to an enemy... meaning "Soviet"... missile attack. It was never activated for a real alert, as far as I can see looking through Broadcasting Magazine. There were several half-hour national tests at around noon, EST, where all stations went off the air and were replaced by rotating low power operations on 640 and 1240.
The concept was expanded to include weather events, civil disturbances, chemical spills, forest fires, etc. as it grew from the EBS to the EAS.
In my lifetime, I've heard the system set off for the Watts riots of 1965, the earthquakes of 1971 (Sylmar) & 1994 (Northridge), and the 1992 L.A. riots.
I don't recall either the 1994 quake or the riots causing an activation. I spent the entire night of the riots at KHJ, and don't think we got an activation; we were the only Spanish language station on the air in the 6 to 7 hours after the Northridge event, and we didn't get an activation then. That may simply prove that the system has defects though.
If there was a Northridge activation, do you recall the message? "We've had an earthquake" would have gotten the "no s---t, Sherlock" reaction from most who were shaken awake or who had walls try to fall on them when arriving for the morning show"
It may not seem like it to everyone, but it does serve a useful purpose.
I've heard many activations for flash flooding and wind advisories in the Coachella Valley, and for fire alerts in the Prescott, AZ, area. Also heard one for monsoon rains and flooding while on the 10 west of Buckeye in AZ, useful because visibility went to 0 and the winds to 70 MPH gusts and the alert let me get off at a truck stop and wait it out over coffee.
And the related Amber alerts have proven most successful in saving lives.
The weekly tests are very short, and are required to be "at random" so any one listener seldom hears them. There has been a long thread on this on the engineering board, with suggestions that cell phones must be incorporated into the system as they are perhaps more "in use" at any given time than radio and TV combined.
In the 60s, as a PR gesture so as not to appear so grim, Civil Defense put out some humorous and musical EBS tests for radio stations to use. Here is an example of a humorous EBS test:
http://www.bsnpubs.websitetoolbox.com/post?id=3757759
As one who did a "humorous" EBS test on WQII in the 70's, I can tell you that there was no tolerance for making the test less cut and dry. I was given a notice of violation, and was not fined only because we were contrite and apologetic and played the benign neglect the FCC showed to Puerto Rico to our advantage.