Germany to conduct nationwide emergency warning test on September 10, 2026

Germany will conduct a nationwide warning day on September 10, 2026, to test technical warning infrastructure and increase public awareness of emergency signals. The exercise is scheduled to begin at 11:00 AM with sirens and mobile phone alerts, followed by an all-clear signal at approximately 11:45 AM.

The test utilizes multiple communication channels, including sirens, radio, television, and digital tools such as cell broadcasting and warning apps like Nina, Katwarn, and hessenWARN. These systems are designed to alert the population during various scenarios, including external threats, major disasters, fire department emergencies, or police incidents like terror threats.

For cell broadcasting to function correctly, citizens are advised to ensure their mobile devices are running current operating systems. The siren signals consist of specific tones: an ascending and descending tone for warnings and a continuous one-minute tone for the all-clear signal.