Exact date 21-hour snow storm will hit UK in Arctic blast

Weather charts forecast snow will begin falling in northern Scotland before moving south to Northern Ireland, Wales and northern England in a blast of Arctic conditions

Britain is bracing for a 21-hour snow onslaught - with new weather maps pinpointing when and where the first flakes are set to fall.

Wintry showers are set to begin in Scotland on December 15, before gradually moving southwards and hitting Northern Ireland, Wales and parts of northern England. By 9am, the heaviest snowfall will be seen in southern Scotland's Galloway Forest Park, along with the Lake District and the Pennines. A lighter sprinkling is also anticipated in Northern Ireland around this time.

North Wales, especially Snowdonia, is predicted to be covered in heavy snow by 3pm on December 15. As the wea