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The public warning signal and sheltering indoors

The public warning signal means there is a danger outdoors, such as toxic gas or smoke from a major accident. The first instruction is almost always the same: go indoors and follow the announcements. This guide explains the different signals and what to do, step by step.

You will need

Steps

  1. Recognise the signal

    The public warning signal is a one-minute rising and falling tone. The all-clear signal is a one-minute steady tone.

  2. Tell a test from an alarm

  3. Go indoors

  4. Close doors and windows

  5. Listen to the radio

  6. Do not call unnecessarily

  7. Protect yourself from gas

  8. Stay indoors until told otherwise

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