The past week has been cold due to a cold north-easterly wind from Scandinavia, although the air has ‘warmed up’ as it crosses the North Sea to be relatively warmer than when it left Scandinavia. There was also snow all around, mainly across northern Scotland and towards the east coasts of Scotland and England, while Thursday also saw an area of rain moving from the southwest to snow inland. across parts of the south west and south central England, causing some traffic problems. in Cornwall.
The weekend remains cold, with temperatures today staying near or below freezing all day in many areas, making this a ‘frost day’. And there will be an additional risk of snow for some, but there will be differences in where the snowfall comes from. Instead of looking east, we’ll look west for systems moving out over the Atlantic to hit cold air and bring snow.
Heavy snow last night across SW Scotland as far as the central belt forced Glasgow Airport to close some time earlier today before opening at 10am, causing disruption to flights. The focus this afternoon has turned further south to Cumbria, where a persistent stream of snow has pushed inland off the Irish Sea forcing the Met Office to issue an Amber Alert.
This evening, a frontal system moves in from the Atlantic, bringing a more organized area of rain, sleet and snow eastward across England and Wales. The front could bring several centimeters of snow across inland areas of Wales, northern England and the Midlands by dawn, over the Pennines, Cumbria Fells and the mountains of North Wales there could be 5-10 cm, in addition to what fell across the North West of England today.
Rain or sleet falling further south across southern England, there will likely be some freezing rain here for a while, as a warm front moves up from the south and moves overhead gas freezes on the surface. So, snow falling from cloud bases turns to rain in warm air aloft before falling into freezing air near the ground. This could cause some freezing before a slow thaw takes place, as milder air will mix at the surface later in the night.
As a result, the Met Office issued yellow warning snow and ice for snowfall overnight across east Wales, the Midlands and parts of northern England. While another yellow warning is in place for SE Wales, South Midlands, East Anglia, London and parts of SE England for rain or sleet falling on icy surfaces. Much of the country in particular saw temperatures around or below freezing all day.
More rain and snow Sunday and Monday
But it doesn’t end tonight. As overnight rain, sleet and snow melts in the east, continued showers or persistent, locally heavy rain, looks set to spread north-east across Wales, the Midlands and northern England on Sunday morning, changing to snow as it moves into a zone of colder air extending northwards, mainly over the hills, but perhaps at lower altitudes in north Wales and northern England during a time. Then, in the evening and overnight into Monday, a deepening low pressure system over the Atlantic looks set to move northeast across SW England by midnight, before moving eastwards through southern England on Monday. This low will spread spells of heavy rain north and east across England and Wales on Monday, reaching southern Scotland in the evening, with rain likely to change to snow over the hills of Wales and the South. northern England, but perhaps it will be lower here too. The snow can be quite heavy, especially on higher ground, leading to significant accumulation. Parts of Wales, Shropshire, Herefordshire, N Midlands and Peak District could see water levels rise by 10-20cm by the end of Monday.
Elsewhere across England and East Anglia – rain or hail. The climate is milder across southern England on Monday, possibly reaching double figures towards the south coast, but remains cold across north Wales and northern England to the north, with temperatures level remains low.
Rain, sleet and snow will move east into the North Sea on Tuesday morning, followed by drier and brighter weather for most everywhere as a ridge of high pressure builds. However, it will be a cold day with northerly winds, slowing the rate of snow melt across northern areas.