The nationwide test to radio and TV stations will take place at 2:20 p.m. EDT. The one-minute test message, conducted through FEMA’s Integrated Public Alert and Warning System, will originate from designated radio stations known as Primary Entry Point stations.
The test will evaluate the readiness of the national alerting capability in the absence of Internet connectivity.
The FCC says the test will have a limited impact on the public with only minor interruption of radio and television programs.
The test will not include a message on cell phones.