Red warnings are issued by the Met Office when immediate action is required against adverse weather conditions.
An amber warning is issued to urge people to prepare for high impact weather conditions.
A yellow warning is used to make people aware that the weather could be changing.
Today, The Met Office issued a rare "red warning" for parts of south Wales - which closed several schools and affected public transport.
For further weather updates, as well as details of disruption to travel and services, click here.
Zoo animals across the UK have been enjoying the winter weather as a blanket of snow covered much of the UK.
A man today transformed an armchair into a toboggan to take full advantage of the winter snow in Norfolk.
Scores of people have been sending in snow pictures to ITV News and here are some of the best snowmen photos.