Yellow warning Thursday (12/01)
Devon and Cornwall:
Occasional snow showers which could bring around 2 cm of snow in low level places. 5-10 cm of snow is possible on higher ground (200m+ above sea level).
There is the potential for disruption to transport networks with longer journey times. Icy stretches on untreated roads and pavements are also possible.
Somerset, Bristol, Dorset, Gloucestershire and Wiltshire:
There's potential for rain to turn rapidly to snow in the cold air. However, there is a great deal of uncertainty over the track and intensity of this weather system, meaning that confidence is low in the amount and extent of any snow.
As skies clear on Thursday night there is also potential for widespread ice to form quite rapidly on untreated surfaces.
Yellow warning Friday (13/01)
Devon, Cornwall and Somerset:
Further showers of snow, sleet and hail will continue across parts of the UK. 2 to 4 cm of snow may affect some lowland areas, while high ground may see locally 5 to 10 cm.
Disruption to transport networks seems likely either due to snow or ice.