Sirens, warning apps and cell broadcast are being tested
The science city of Darmstadt is participating in the statewide warning day in Hesse on Thursday, March 12, 2026. The aim of the day of action is to test the functionality of various warning systems and to raise public awareness of warning signals.
Siren alarm at 10:01 AM
The test alarm will begin at 10:01 a.m. with a one-minute, rising and falling siren wail throughout the city. This signal serves as a warning to the population .
In addition, warning messages are disseminated via the NINA and hessenWARN apps. The Cell Broadcast , which sends warning messages directly to smartphones, is also used.
In the event of a genuine warning, the city recommends the following rules of conduct:
• Seek shelter indoors
• Close doors and windows
• Turn on the radio or television and listen for announcements
• Inform neighbors
• Follow warnings via apps
• Turn off ventilation and air conditioning systems
All clear at 10:30 a.m
The test alarm will end at 10:30 a.m. with the all-clear , a one-minute continuous tone from the sirens.
For the first time, an all-clear message will be sent via Cell Broadcast during a test alarm in Hesse. Since the technical protocol was not originally designed for this, the all-clear message will be implemented as a hazard warning of the lowest alert level. Depending on smartphone settings, the message may therefore appear with only a system tone or without any audible signal.
To ensure that all-clear messages are received, the Federal Office of Civil Protection and Disaster Relief recommends activating the cell broadcast function even for warning level 3.
Further information on warning systems and siren signals is available on the website of the Darmstadt Fire Department and the Federal Office of Civil Protection and Disaster Relief.
The next nationwide warning day is already scheduled for September 10, 2026 .
(DARMSTADT – RED/PSD/stip)
