The next nationwide warning day will take place on 14 September 2023. The nationwide warning day is a joint day of action organised by the federal government, federal states and local authorities. It takes place annually on the second Thursday in September.
The nationwide warning day serves to test the warning systems. On the nationwide warning day, a test warning in the form of a warning text is sent to all warning multipliers (e.g. radio stations and app servers) connected to the modular warning system (MoWaS for short) of the federal government from 11:00 am.
The warning multipliers send the test warning to warning devices such as televisions, radios and smartphones with a time delay. You can then read and/or listen to the warning there.
At the same time, municipal warning devices (e.g. loudspeaker vans or sirens) can be triggered at state level in the participating districts and municipalities.
At around 11:45 a.m., an all-clear is given via the warning devices and terminals that were previously used to send the warning. No all-clear is currently sent via cell broadcast. The possibility of issuing an all-clear via this warning channel is currently being examined by the mobile network operators and others.
All information is available on the website of the Federal Office of Civil Protection and Disaster Assistance.