Overview
- The BBK will issue the test via the federal MoWaS system at 11:00, with a one-minute all-clear scheduled for 11:45.
- Alerts will go out through Cell Broadcast, the NINA app, radio and TV, digital city displays, taxi-roof ads and station information systems.
- In Berlin, official warning sirens will sound for the first time in more than 30 years, with more than 200 units activated and a buildout toward about 450 by year-end.
- Hamburg adds local drills with a 10:45 storm-surge message, 11:00 sirens and 11:05 test cannon shots in the harbor.
- Authorities note Brandenburg’s register lists 2,492 sirens expected to sound, and they urge residents to update smartphone software as surveys show high reach via Cell Broadcast.