Roads are left underwater and trains cancelled after Britain is hit by December deluge with 108 flood warnings and alerts in place and three weeks' worth of rain set to fall in the next 72 hours More than three-quarters of a month's rain is set to fall in just a few days from today, accompanied by gales Up to 2in (50mm) could fall today then 2.4in (60mm) more from tomorrow evening to early hours of Saturday Worst-affected areas are likely to be South Wales and West Country amid 108 flood warnings or alerts in place Forecasters have warned New Year could bring floods with the start of 2021 likely to be wetter than normal