A nationwide test of the Emergency Alert System will be conducted at 1 p.m., next Wednesday. This will be the first time that a national Emergency Alert test will be conducted. TV and radio will broadcast a test warning message for two to three minutes.
The Federal Emergency Management Agency and Federal Communications Commission are coordinating this test with broadcasters throughout the United States.
NOAA weather alert radios will not broadcast the alert.
Read more at http://www.fcc.gov/guides/emergency-alert-system-nationwide-test-eas.