After public safety agencies transmit wireless emergency alert (WEA) messages to the Federal Emergency Management Agency, the PBS WARN system automatically reformats the messages for transmission to local stations through the public TV interconnection system. The networking technology establishes a redundant, over-the-air path for the WEAs to reach commercial mobile service providers (CMSPs) and their individual clients.
The Federal Emergency Management Agency and the FCC will conduct the first national test of the country’s Emergency Alert System on Wednesday, Nov. 9, at 2 p.m. ET. The duration may be up to three-and-a-half minutes.