Britain will be hit by a week of snow and freezing temperatures, as the country shivers in cold blasts from Greenland and Iceland today. The North will be worst hit with ‘thundersnow’ storms striking - while snowfalls of up to 6in (15cm) are predicted by forecasters tonight. The Met Office has a yellow 'be aware' weather warning in place for snow and ice in almost all of Britain - excluding south-west England - today. Snow depths already recorded in the north of England include 4in (10cm) in Cumbria, 2in (5cm) in Northumberland and 1.2in (3cm) in West Yorkshire. But the deepest snow fell in Scotland and Northern Ireland, with 9in (23cm) at Tulloch Bridge, Inverness-shire, and 8in (21cm) at Glenanne in Armagh.