Regional Warntag Tests Emergency Alert Systems Across Four German States

Sirens, cell broadcasts, and other warning methods will be activated today to evaluate preparedness and raise public awareness for emergencies.

The Warntag will take place in four German states today: Rheinland-Pfalz, Hessen, Bayern, and Nordrhein-Westfalen, with alerts scheduled at different times throughout the morning.
Emergency alert systems being tested include sirens, cell broadcasts, warning apps like NINA and Katwarn, and digital city information boards.
Cell Broadcast, introduced nationwide in 2023, sends direct warnings to smartphones without requiring apps or internet access, but older devices may not be compatible.
The tests aim to identify weaknesses in the alert systems and improve public awareness of emergency protocols for potential future crises.
A nationwide Warntag is planned for September 11, 2025, building on lessons learned from regional and past national tests.