This in from Community Board 2:
Please be advised that on Wednesday, November 9, 2011 at 2:00 p.m.(EST), the federal government will be conducting the first nationwide test of the Emergency Alert System (EAS). The test will last up to three and a half minutes. During this period, regularly scheduled television, radio, cable, and satellite shows will be interrupted as the system is being tested. This event will be just a test, and not a real emergency alert.
The national Emergency Alert System is an alert and warning system that can be activated by the president, if needed, to provide information to the American public during emergencies. NOAA’s National Weather Service, governors, and state and local emergency authorities also use parts of the system to issue more localized emergency alerts. The test is an important exercise in ensuring that the system is effective in communicating critical information to the public in the event of a real national emergency.
Under the Federal Communications Commission’s (FCC) rules, radio and television broadcasters, cable operators, satellite digital audio radio service providers, direct broadcast satellite service providers and wire line video service providers are required to receive and transmit presidential EAS messages to the public. A national test will help federal partners and EAS participants determine the reliability of the system, as well as its effectiveness in notifying the public of emergencies and potential dangers both nationally and regionally. The test will also provide the FCC and the Federal Emergency Management Agency (FEMA) a chance to identify improvements that need to be made to build a modernized and fully accessible Emergency Alert System.