Bavaria tests warning systems: Sirens and Cell Broadcast across the state

On Thursday, March 12, 2026, at 11:00 AM, a statewide test alarm begins across Bavaria, aiming to verify the technical readiness of public warning systems. Residents of Germany's largest federal state will hear the sound of alarm sirens and receive notifications on their mobile devices. The Cell Broadcast system will be used, which sends messages directly to phone screens, often bypassing mute settings. Additionally, popular warning apps such as NINA and KATWARN will be activated. The entire operation is routine and serves to prepare citizens for real threats.

Coordination of today's activities is the responsibility of the Bavarian State Ministry of the Interior, for Sport and Integration. The ministry is headed by Joachim Herrmann, who has served as Bavaria's Minister of the Interior continuously since 2007. Officials emphasize that regular checks of critical infrastructure are essential for ensuring efficient information flow in crisis situations. The test also aims to sensitize residents to acoustic signals and teach them to recognize them properly. The ministry appeals to the public to remain calm and not to initiate any rescue actions upon hearing the sirens.

German warning systems underwent a thorough modernization after the tragic floods of 2021, which revealed significant gaps in crisis communication at the local and federal levels. Since then, nationwide and regional warning days have been regularly conducted to synchronize various information channels, from analog sirens to modern apps. The introduction of Cell Broadcast technology in February 2023 became a key element of the security strategy, allowing it to reach almost every mobile phone user in a danger zone. Bavaria, due to its terrain, places particular importance on maintaining a dense network of stationary sirens.

Today's action will allow experts to identify any coverage gaps or software errors in the digital systems. Schedule of the test alarm in Bavaria: March 12, 11:00 — System activation; March 12, 11:15 — Range monitoring; March 12, 11:45 — Test conclusion