Emergency Alerts - GOV.UK
Your mobile phone or tablet may get an emergency alert if there’s a danger to life nearby. Alerts tell you what to do to stay safe.
https://www.gov.uk/alerts?fbclid=IwAR193KDHqQ6AttTv0-3sYftgrLUmU1nK9NLsxwlJgk-oQLJ3EMs4Nzm5hik