Snow will continue across much of southwest England during Sunday afternoon, easing at times during the evening, but further spells of snow are likely into the early hours of Monday. Strong east or northeasterly winds will lead to some drifting of snow, especially over hills, with significant wind chill. Travel delays on roads are likely, stranding some vehicles and passengers. Delays and cancellations to rail and air travel are likely. There is a good chance that some rural upland communities could become cut off. Disruption to power supplies is possible. The warning has been updated to remove southeast Wales and parts of the West Country, where the snow is now easing, but extending the end time into the early hours of Monday.
A band of heavier snow is moving westwards across southwest England, with falls of 5-10 cm of snow within 2 to 3 hours. Snow will be most persistent and heavy during Sunday afternoon and evening over Dartmoor and much of South Devon, where a further 10-15 cm is expected and as much as 20-30 cm over eastern parts of Dartmoor. The snow will ease at times through the evening, but further spells of heavier snow are possible until the early hours of Monday. As less cold air follows from the south, snow may turn to rain for a time close to the south coasts of Devon and Cornwall.
Further snow showers will affect northern England with a few in southeastern parts of England, whilst more significant areas of snow will affect Wales, southern and southwest England. A separate Amber warning is in force for the areas most likely to see disruption from snow. There is a chance of travel delays on roads with some stranded vehicles, along with delayed or cancelled rail and air travel. Damage to trees or other structures increases the chance that power cuts could occur, especially over southwestern parts of England. There is a small chance that some rural communities could become cut off. Icy surfaces increase the risk of accidents and injuries. Significant wind chill and drifting will be added factors, especially over hills.
The area of snow affecting Wales, the West Midlands and the West Country this morning will continue to move west, with the most persistent and heavy snow becoming confined to parts of southwest England and the West Country later this afternoon and evening. Snow showers will continue across northern England this afternoon with a few lighter ones in the southeast of England as well. Ice will form on untreated surfaces this evening, particularly where snow has melted through the afternoon. Further accumulations of 1-4 cm of snow are likely, whilst greater amounts will occur locally, mostly covered by the Amber warning area.
Ice is expected to form on roads, pavement and cycle paths. This increases the risk of accidents as well as injuries due to slips and falls.
Light snow showers will mostly die away during Sunday afternoon and evening to be followed by a widespread sharp frost on Sunday night. Some melting snow during Sunday afternoon will refreeze on Sunday evening and overnight leading to widespread icy stretches on untreated surfaces.
Ice is likely to form on untreated roads, pavements and cycle paths. This increases the risk of accidents, as well as injuries due to falls. Further snow is likely across parts of the southwest of England, easing from the north by morning, with a few light snow showers for other southern counties for a time.
After a very cold day on Sunday, temperatures are likely to fall well below freezing across many areas into the start of Monday. This will lead to any partly melted snow refreezing. Snow in the south and southwest of England will be slower to clear and may take until morning before dying out completely, whilst some wintry showers may continue to affect eastern coasts, falling onto subzero surfaces. This warning has been updated, chiefly to remove southeast Scotland (covered by a separate warning).