The confirmed date you will receive an Emergency Alert from the government in national test.
This is the date you’ll get an emergency alert text. The government plans to send an emergency alert message to every phone in the UK this week.
The system’s second national trial date has been chosen. Two years after the previous test, millions of people will receive a text message accompanied by a distinct’siren’ sound.
It is expected to arrive in a matter of days, and mobile carriers are beginning to send notifications. But when will the text arrive, and what should you expect? Here’s everything you need to know.
When will the Emergency Alert test be sent?

The government has confirmed that the second nationwide test of the Emergency Alert system is set to take place on Sunday (September 7). The previous one also took place on a Sunday.
Millions of people will receive the text message at 3pm on Sunday. It will be accompanied by a siren-like sound and it will vibrate for roughly ten seconds.
Even if your phone is set to silent, it will still make a loud noise. The test will be accompanied by a message that will appear on your screen, making it clear the alert is only a test.
Just like the fire alarm in your house, it’s important we test the system so that we know it will work if we need it.
“This test is part of our action plan to build resilience across the whole country and secure the nation under the Plan for Change – from the £1 billion we’re investing in a new network of National Biosecurity Centres to the £4.2 billion we’re investing to build a new generation of flood defences to protect local communities.”
Who will receive the Emergency Alert text?
Since the initial test two years ago, the system has been employed on a few occasions, primarily during extreme weather.
Alerts were sent out during Storm Darragh in 2024, and again in early 2025 for Storm Éowyn, the latter being the most widely used so far.
The warnings can only be sent by emergency services, government departments, agencies, and public bodies that handle emergencies.
You may also receive them in the event of catastrophic flooding, fires, or extreme weather, for example.
The government has announced that the Sunday test will be delivered to all phones in the UK. It adds that the country has around 87 million mobile phones.
The alarm can be turned off; for example, victims of domestic abuse with a hidden phone may find it appropriate to disable the text. However, others can choose to turn them off.
What happens when you get an emergency alert?
The messages are normally transmitted to mobile phones, but they can also be delivered to tablets.
Even if your device is set to silent, it will emit a loud siren-like sound, vibrate, and display the warning.
The sound and vibration will last for around 10 seconds. An alert will contain a phone number or a link to the GOV.UK website with additional information.
You will receive alerts based on your present location, not where you live or work. You do not have to enable location services to receive alerts.
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