Are you ready for this Sunday's Emergency Alerts Test?

Emergency Alerts Test: Sounding the Alarm The second-ever national test of the Emergency Alert system will take place on Sunday 7 September at around 3pm.

This important system ensures we can communicate critical safety information during emergencies.

📣 A loud siren will sound from millions of mobile phones across the UK at 3pm on Sunday 7 September as the government conducts its second nationwide test of the Emergency Alert System – a vital tool that has already proven its worth in real-life emergencies.

Since the first national test of the system in April 2023, Emergency Alerts have helped protect communities during five genuine crises, including warning residents about an unexploded World War II bomb in Plymouth and providing critical safety information during localised flash flooding in Cumbria.

During the test on 7 September, your mobile phone will:

Make a loud siren sound for about 10 seconds (even if on silent)

Vibrate

Display a clear message stating this is only a test

📱 This test alert is expected to reach approximately 87m compatible mobile phones and tablets across the UK.