Video: Met Office forecaster predicts more rain The Met Office has issued an amber weather warning - its second highest alert - for south west England, with up to 30mm of rain expected to fall in some places today. Lower-level yellow weather warnings have also been issued for much of southern England and Wales. The rain is expected to ease by Christmas Day but many places remain on flood alert as forecasters warn of more heavy showers overnight, bringing further flood risks on ground that is already saturated from torrential downpours in the last few days. Some areas have exceeded their full-month December average since December 19 - such as Plymouth, which has seen 5.1in (128.8mm) of rain compared with a December average of 4.7in (118.8 mm). Flooded railway lines have caused delays and cancellations of trains, with many people left unable to return home to their families for Christmas. National Rail Enquiries says anyone travelling today should use the company's journey planner to check if their journey is affected.