Today starting at 2:18 p.m. Eastern, most Americans simultaneously felt their cellphones vibrate, heard them make a loud sound and saw a push alert pop up on their screens. Most radio and television stations broadcast an alert at the same time for about one minute.
Why did phones get an emergency alert today? It was just a test.
Cellphones, televisions and radios all took part in a test of the national alert systems
The notifications, which started two minutes early, were a test of the national emergency alert systems. They are are designed to let the government reach hundreds of millions of people in the United States immediately if there is a disaster affecting the entire country. The Federal Emergency Management Agency and the Federal Communications Commission conducted the coordinated test to see if the technology is working as designed and if any improvements are needed.
The sound is a unique tone that probably interrupted classes and meetings, revealed the locations of hidden phones, and jarred anyone not expecting it. The test itself has led to baseless conspiracy theories about how the powerful communication tool could be abused.
In reality, the system is designed to allow the government to reach people quickly in the case of an actual widespread emergency such as a terrorist attack. However, most disasters only require contacting people in a certain area and would not necessitate an alert to the entire country.


