THE Met Office says there is a 60 per cent chance of heavy snow bringing parts of Plymouth a halt on Thursday and Friday.
They have issued a warning of severe or extreme weather.
Heavy snowfall is forecast for Plymouth and other parts of the South West before the weekend.
The Met Office says up to 20cm of snow will settle in parts of the region, with heavy falls in the city, and they say transport infrastructure will be hit.
In general, accumulations of five to 10cms of snow are expected but this could double in some areas.
This is the second big freeze of the winter and while Scotland, the North and the East bore the brunt of the first, this time the West is at the forefront of the weather system.
Ice, snow and freezing rain will sweep across the west of the country from Ireland early on Thursday.
Severe weather warnings are in place for 10 regions and temperatures are set to plunge to -10C.
Snow is likely to continue through the weekend and some parts of the country will see a White Christmas.