Heavy snowfall and icy weather conditions have prompted the closure of over 60 schools in the Highlands and about 100 in Devon and Cornwall. The UK faces a yellow weather warning for snow and icy conditions, particularly in Scotland and south-west England. Authorities are advising motorists to drive cautiously due to numerous collisions reported. As temperatures plummeted to -10C in parts of Scotland, further wintry weather is expected into Friday, with continued snowfall and freezing conditions across northern Scotland and parts of Wales.