FEMA and the FCC will test the National Emergency Alert System on October 4. You'll hear tones go off on your phone, radio, and TV. There's no need to panic!
Just in case you missed it, The Federal Emergency Management Agency (FEMA), has put off the "Presidential Alert" test sent to American smartphones and wireless devices
This Thursday, if your cellphone buzzes loudly and a message comes on the screen reading "Presidential Alert", don't be alarmed. This is a Nationwide test of the Emergency Alert System.