"The national test will consist of two portions, testing WEA and EAS capabilities. Both tests are scheduled to begin at approximately 2:20 p.m. ET on Wednesday, October 4. The purpose of the October 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 October 4 test is postponed due to widespread severe weather or other significant events, the back-up testing date is October 11. " https://www.fema.gov/press-release/20230803/fema-and-fcc-plan-nationwide-emergency-alert-test-oct-4-2023