Britain is set to face a severe drop in temperatures this week, with a significant snowstorm expected to impact up to 25 areas, potentially leading to power outages. A yellow weather warning for snow has been issued, starting at 3am on Tuesday and lasting until 6pm the same day, particularly affecting seven regions in Scotland.

In addition to the snow warning, a yellow weather warning for ice is in effect, with subzero temperatures anticipated in 18 areas across England, including Durham, Cumbria, Northumberland, and Yorkshire. The Met Office has cautioned that the snow could disrupt power supplies, urging residents in the affected regions to prepare accordingly.

Chief Forecaster Paul Gundersen stated, "Scattered showers feed into the northeast and far north of mainland Scotland on Monday night, bringing a risk of icy conditions on roads and pavements. An area of rain will reach the west of Scotland early on Tuesday morning, with a risk of this turning to snow as it moves inland."

He added that while there is some uncertainty regarding the exact path and extent of the storm, a period of snow is likely over high ground, with expected accumulations of 2-5 cm above 150 metres and as much as 5-10 cm above 400 metres.

Deputy Chief Forecaster Tom Crabtree warned that the coldest part of the week will be from Wednesday to Friday, with the highest potential for impactful weather. He noted, "Overnight, temperatures could get down to minus ten, with a significant wind chill from the strong northerly wind making things feel even colder."

Wintry snow showers are predicted to extend southward from Wednesday into Thursday, primarily affecting north-facing coastal areas. Snow accumulations are likely, with 2-5 cm possible in some low-lying areas in the north and east. In hilly regions of Northern Ireland, northeast England, and Scotland, 5-10 cm of snow could fall, with accumulations of 15-20 cm expected above 300 metres in parts of northeastern England and Scotland.

Residents are advised to stay updated on weather warnings and prepare for potential disruptions as the storm approaches.