In a state of disaster, functioning warning systems are essential. For this reason, the nationwide warning channels are tested once a year, this year on September 14. On Thursday at around 11 a.m., the Federal Office of Civil Protection and Disaster Assistance (BBK) triggers the test warning via the so-called Modular Warning System. In response, various warning channels, for example, radio and television, warning apps such as NINA, city information, sirens and loudspeaker trucks are activated. Since February 2023, Cell Broadcast has also made it possible to send warning messages directly to mobile devices – without an app. The warning app NINA can also be used to receive further warning messages and information about hazardous situations on the smartphone.
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