FEMA, in coordination with the Federal Communications Commission (FCC), will conduct a nationwide test of the Emergency Alert System (EAS) and Wireless Emergency Alerts (WEA) at approximately 2:20 p.m. ET on Wednesday, Oct. 4.

The national test will consist of two portions, testing WEA and EAS capabilities. The WEA portion of the test will be directed to all consumer cell phones. The EAS portion of the test will be sent to radios and televisions. 

The purpose of the Oct. 4 test is to ensure that the systems continue to be effective means of warning the public about emergencies, particularly those on the national level. In case the Oct. 4 test is postponed due to widespread severe weather or other significant events, the back-up testing date is Oct. 11.