The Met Office has issued a fresh warning for snow and ice as wintry weather continued to disrupt the first week back to school in parts of Scotland. More than 50 schools in the Highlands have been affected on Wednesday, with most closed for the day due to snow and ice on roads.

Scotland is continuing to be hit by freezing weather, with rain, sleet and snow expected to fall across large parts of the country. Temperatures at Loch Glascarnoch in the Highlands fell to -11C on Saturday night after forecasters extended a yellow warning from 09:00 on Sunday until 12:00 on Monday.

A polar vortex is expected to bring snow and ice to 26 states and D.C., threatening travel with blizzard conditions and record-low temperatures.