Today is Nationwide Warning Day, when both cell phones and sirens will sound a loud alarm at 11 a.m., even if the phones are muted. This test serves to ensure the functionality of the alerting systems and to make sure that citizens can be informed quickly and effectively in the event of an emergency.
The annual Federal Warning Day is organized by the Federal Office of Civil Protection and Disaster Assistance (BBK) to ensure that all citizens know how to get timely information in an emergency. In addition to cell phone alerts and sirens, other warning systems such as the warning app Nina and the cell phone alert system Cell Broadcast are also being tested. After the alert at 11 a.m., an all-clear message is given at 11:45 a.m.