UK Emergency Alert: Exact Time Phones Will Buzz

A nationwide test of the emergency alert system will take place across the UK next weekend, marking the second trial since its launch in 2023.

When will the alert happen?
On Sunday, September 7 at around 3pm, mobile phones connected to 4G and 5G will vibrate and play a siren-like sound lasting up to 10 seconds. A message will also appear on screens to confirm that it is only a test.

What is the system used for?
The government uses the alert system to send urgent warnings in life-threatening situations. Since its introduction, it has been activated five times — including during Storm Eowyn in January to warn people in Scotland and Northern Ireland, and Storm Darragh in December, which reached about 3.5 million people in Wales and south-west England.

It has also been triggered in specific emergencies:

• February 2023: Around 50,000 people warned after a 500kg WWII bomb was found in Plymouth.

• May 2024: 15,000 phones alerted during flooding in Cumbria.

• January 2024: 10,000 phones received warnings during flooding in Leicestershire.

The alerts can be highly targeted to affected areas and are supported by TV, radio, and even door-to-door notifications if needed.

Why is a new test taking place?
Pat McFadden, Chancellor of the Duchy of Lancaster, said:
“On Sunday, September 7, we will carry out a UK-wide test of the Emergency Alerts system to ensure it works properly in real crises. This is a crucial tool for protecting lives when every minute counts.

“We rarely need to use it, but like a fire alarm at home, it must always be ready. During extreme weather events such as Storm Darragh and Storm Eowyn, we saw how effective it was in getting life-saving advice to people immediately.”