The Federal Emergency Management Agency (FEMA), in coordination with the Federal Communications Commission (FCC), will conduct a mandatory nationwide test of the Emergency Alert System (EAS) on Sept. 27, 2017 at 2:20 pm EDT. The test will assess the readiness for distribution of the national level test message, as well as verify its delivery.
The EAS test is made available to radio, television, cable and direct broadcast satellite systems, and is scheduled to last approximately one minute. The test’s message will be similar to the regular monthly test message of the EAS with which the public is familiar, only inserting the word “national.” “This is a national test of the Emergency Alert System. This is only a test.”
See the whole story at: https://www.fema.gov/emergency-alert-system