City of Mount Pleasant issued the following announcement on Aug 11.
FEMA and the Federal Communications Commission will test the nation’s public alert and warning systems TODAY 8/11/21 at 2:20 p.m. (EST).
You will receive a test message on your cell phone, radio and television.
Wireless Emergency Alerts provide life-saving information to the public during emergencies.
This is the sixth test of the nationwide alert system.
Original source can be found here.
Source: City of Mount Pleasant