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Public warning signal

The public warning signal is a one-minute-long ascending and descending tone or a warning announcement by the authorities. The length of the ascending tone is 7 seconds.

The public warning signal means an immediate danger threatening the public. The warning is given in population centres with an outdoor alarm system and with an alarm attached to a vehicle in rural areas.

The All Clear signal is a one-minute-long monotonous signal. It is an announcement of the threat or danger having passed.

Act in the following way after you've heard the public warning signal

• Proceed indoors.
• Stay indoors.
• Close doors, windows, ventilation holes, and air conditioning devices.
• Turn on the radio and wait for instructions.
• Avoid using the phone to prevent telephone lines from getting jammed.
• Do not leave the areas unless urged to do so by the authorities, so as not to endanger yourself on the way.