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The UK Government will be carrying out a national test of the Emergency Alerts system on Sunday 7 September at 3pm.
Compatible mobile phones and tablets will receive an alert, make a loud siren-like sound and vibrate. You will not 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.