Sirens

In what situations are sirens used to trigger alerts?

Sirens are used to warn the population in the event of danger. They can be activated locally or nationwide depending on the nature of the event. Sirens are tested monthly, on the first Monday of the month at noon.

Siren warnings include several different warning tones.

Listen Signal Signal type What to do
Listen to the signal (Mpeg)

_______

60 s

Monthly test

Continuous tone

No action required.

_______

2 min

Warning signal

Continuous tone

Get to safety and stay informed (via official warning channels and the media). Follow the authorities' instructions.
Listen to the signal (Mpeg)

mmmm

60 s

Nationalwide alarm signal

Rising and falling tone

Seek shelter as soon as possible in a sturdy building, with all doors and windows closed.

m m m m

12s 12s 12s

60 s

End of alarm

Rising/falling tone with pauses

The risk has passed. Return to normal activities.

However, more detailed information regarding the situation in question will be disseminated via Cell Broadcast (CB), the "LU-Alert" mobile app, the website www.lu-alert.lu, other government websites, and the media.

If you have not found the answer to your question among the questions above, please consult the other sections of “All about LU-Alert”. If you do not find the answer to your question there either, you can contact us directly using the contact form by clicking on the link below.

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The LU-Alert mobile app

With the “LU-Alert” app, you can follow all the alerts and information issued by the public authorities via the national warning and information system for the population (LU-Alert).

Download the application free of charge from the Apple App Store and the Google Play Store.