Warning Day: Germany to test emergency alerts on September 10
On September 10, 2026, Germany will hold its annual Warning Day (Warntag) to test its emergency alert system. Here’s what you need to know.
Germany will conduct its annual Warning Day (Warntag) test on September 10, 2026, aiming to assess the effectiveness of its emergency alert system. At 11am on that day, residents should expect an emergency alert on their mobile phones, which will be followed by an "all clear" alert at 11.45am. This annual test, held during the second week of September, seeks to raise the percentage of people receiving the warning message while ensuring the prompt delivery of the alert.
You can expect to receive the message on your mobile phone, but it may also appear on train platform displays, TV, radio, or through the NINA and Katwarn warning apps. In case you do not receive the alert, ensure your mobile device's operating system is up-to-date. The test may trigger siren warnings in certain regions and communes across Germany, although participation is not mandatory.
The first siren will emit a wailing tone, ascending and descending, lasting for one minute, followed by a continuous tone for one minute at 11.45am. The Federal Office for Civil Protection and Disaster Assistance advises reaching out to vulnerable groups, such as war refugees, the elderly, and children, beforehand to inform them about the test and its insignificance.
For further guidance on what to do if a real emergency warning occurs in Germany, consult the article "What to do if there is a real emergency warning in Germany."
Written by urgent.news from IamExpat Germany (All Germany News)'s reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
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