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Warning Sirens: What the Signals Mean in Poland and Germany

Sirens and alerts: a practical guide

⏱ 3 min read

Signals, phone alerts, sealing a room. A guide based on official advice. The same text is in the free SurvivalZone.app and works without internet.

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Many people only hear sirens during tests. When they sound for real, most do not know what they mean.

It is worth knowing the signals and having a simple plan, because an alert can cover different threats, from air contamination to an attack from the air.

How the signals sound

  1. Signals differ by country. In Germany, a warning is a rising and falling tone for one minute and the all-clear is a steady tone for one minute. In Poland, the alarm is a rising and falling tone for three minutes and the all-clear a steady tone for three minutes. Check your own country's signals on the civil protection website.
  2. A siren only tells you that something is happening. Details come from radio, TV and alerts on your phone.

Alerts on your phone

  1. Most EU countries now send emergency alerts straight to phones in the affected area, for example via Cell Broadcast. Germany also uses the NINA and KATWARN apps. Check in your phone settings that emergency alerts are switched on.

Air contamination

  1. After a fire at a chemical plant or a leak, people are often told to stay indoors and seal a room. Have tape, plastic sheeting and towels ready to seal the door, and know how to switch off mechanical ventilation and air conditioning.

A simple plan

  1. You know how the alert and the all-clear sound.
  2. You have a battery radio and alerts switched on.
  3. You know which room you will seal.
  4. You have water and food for a few days at home.
  5. Your family knows where to meet if the alert finds you apart.

Checklist

  1. Alert and all-clear signals known
  2. Emergency alerts on in your phone
  3. A battery radio
  4. Tape, sheeting and towels for sealing
  5. You know how to switch off ventilation
  6. Water and food
  7. A family meeting place

See also

Frequently asked questions

What does a rising and falling siren mean?

In many European countries it is the warning signal. Turn on the radio or check the alert on your phone to find out what the threat is.

What should I do when sirens sound?

Go indoors, turn on the radio or check your phone for the alert, and follow the instructions.

What are emergency alerts on phones?

Messages from the authorities sent to every phone in an affected area, even without an app.

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Sources

Official sources are checked automatically every day. Last check: 2026-11-04.

General guidance only; it does not replace the emergency services. If a life is in danger, call 112.