Will there be a phone alert on October 4? Here's what to expect. Your electronic devices may alarm you on Wednesday — but there's a reason for that. A nationwide test of the federal emergency alert system will be broadcast at approximately 2:20 p.m. EDT to cellphones, televisions and radios across the United States. https://www.cbsnews.com/news/emergency-alert-test-october-4-2023-fema-fcc-cellphones-tvs-radios/#:~:text=Here's%20what%20to%20expect.,-By%20Emily%20Mae&text=Your%20electronic%20devices%20may%20alarm,radios%20across%20the%20United%20States.