Growing up, the Emergency Broadcast System was a kind of sonic boogeyman. Its signature harsh tone would cut through your favorite TV show or song on the radio, announcing that “THIS IS ONLY A TEST”.

Don’t panic. It’s only a test. A nationwide test, that is. At about 2:20 p.m. EDT on Wednesday, every cellphone, television set and radio in the country will emit the familiar beeping noise associated ...

CLAIM: An emergency broadcast system test on Oct. 4 will send a signal to cell phones nationwide in order to activate nanoparticles such as graphene oxide that have been introduced into people’s ...

The monthly test of the all-hazard Statewide Outdoor Warning Siren System is scheduled for Friday, Jan. 2, 2026, at 11:45 a.m ...

There was an incorrect emergency message broadcast on the emergency broadcast system on Wednesday. The first Wednesday of each month, St. Louis County tests it’s emergency broadcast system ...

The first monthly test of the all-hazard Statewide Outdoor Warning Siren System in 2026 will take place on Jan. 2 at 11:45 ...