The UK government is testing the Emergency Alerts system on Sunday 7 September 2025 at 3pm. Compatible mobile phones and tablets will receive an alert, make a loud siren like sound and vibrate. You don’t need to take any action. The Emergency Alerts system is used to warn if there’s a danger to life nearby, including extreme weather. Regular testing ensures the system is functioning correctly, should it need to be used in a life-threatening emergency.
Find out more on the government’s website.