An emergency alert has been sent to millions of people in Scotland ahead of a rare red weather warning. People with compatible mobile phones living in the 22 council areas of the country expected to be worst hit by the storm received the alert at approximately 18:00.

Storm forecasters say "a strong event cannot be ruled out" in the UK - with an explosive cyclogenesis caused by a major drop in air pressure bringing the "risk of a few tornados".

The rare red weather warnings highlight the potential for life-threatening conditions, with wind gusts reaching up to 100mph