The monthly test of the all-hazard Statewide Outdoor Warning Siren System is scheduled for Thursday, May 1, 2025, at 11:45 ...

Outside of necessary routine testing, they shouldn’t be used. A sample Emergency Alert System broadcast. Note the digital sounds of the alert data and the warning message cut-in. Don’t play ...

Sirens will sound Tuesday morning throughout the entire state as a test. The sirens will activate the Emergency Alert System (EAS) on NOAA Weather Radio but will not trigger a wireless emergency ...

"It's a very loud, high pitch sound that is very different than what ... like those in Ventura and Orange counties already use the alert system, which is widely used overseas.