If you're in the United States and your phone suddenly vibrates and emits an audio tone, don't be alarmed. It's likely part of a nationwide test of the Wireless Emergency Alerts system. The test aims to ensure that the system is functional and can effectively disseminate critical information during emergencies. Here's everything you need to know about this test.

What Happens During the Test?

The test was scheduled to start at 2:20 PM Eastern Time and will continue for 30 minutes. During this period, mobile phones will vibrate and emit an audio tone twice, along with displaying a text message in either English or Spanish. The message will read: "THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed."

Who's Behind the Test?

The test is conducted by the US Federal Emergency Management Agency (FEMA) and the Federal Communications Commission (FCC). These agencies are responsible for managing both the Wireless Emergency Alerts system and the separate Emergency Alert System that broadcasts similar messages through radio and TV.

Why is the Test Necessary?

The primary purpose of the test is to ensure that the system works as intended. Real alerts are typically issued by local and state government officials, along with other federal agencies like the National Weather Service, during actual emergencies. The test serves as a system-wide check to ensure that it will work for smaller, more localized uses as well.

How Often Do These Tests Occur?

This is only the third nationwide test of the system. Previous tests took place in 2018 and 2021, and additional tests are planned for the future in accordance with federal law.
Can You Opt-Out?

There is no official opt-out option for the national tests. However, phones will not receive the test alert if they are turned off or put in "aeroplane mode" during the test duration.
Final Thoughts

The nationwide test is an essential part of ensuring that the emergency alert systems are functional and effective. While it may cause a momentary disturbance, it's a small price to pay for a system that has already been used more than 84,000 times since its launch in 2012 to alert citizens about various emergencies.

So, the next time your phone buzzes with a test alert, remember that it's all part of keeping you and your community safe.