A large part of the region has an amber warning in force for moderate to heavy falls of snow this evening and tonight. The amber warning covers Somerset, Dorset, parts of Wiltshire, Bristol, Bath and South Gloucestershire.
There could be 2 to 5 centimetres of snow falling with up to 10 cms locally. The Mendips and Quantocks could have even higher totals. Temperatures drop to freezing tonight - so where the surface is wet there is the risk of ice.