Red, amber and yellow weather warnings explained

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.

A matrix used to define the warning colour; an event with a high likelihood and medium impact would result in an amber warning. Credit: The Met Office

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.