Up to 4cm of snow could fall on areas above 250m, the Met Office says.Read more
Helicopters dropped explosives to prevent larger snowslides after heavy snowfall in the region.
Northerly winds have caused conditions which have trapped people in some villages.
Sudden Stratospheric Warming brought a deep freeze to the UK last year. Will the same thing happen this winter? Darren Bett looks at the how the phenomenon affects our weather.