UK emergency alerts test - Sunday 7 September

Emergency alerts test
The government will be carrying out a national test of the UK Emergency Alerts system on Sunday 7 September at 3pm

During the test, mobile phones and tablets will:

• Emit a loud, siren-like sound for approximately 10 seconds, even if set to silent.

• Potentially vibrate or read out the alert.

• Display a message confirming that the alert is a test.

The Emergency Alerts system is designed to warn people if there is a risk to life, such as severe flooding, fires or extreme weather.

Visit Public testing of the Emergency Alerts system - GOV.UK to find out more.

Last modified: 02/09/2025