Britain is bracing for a significant wintry onslaught, with forecast maps predicting a 21-hour barrage of snow set to sweep across the country around mid-December.
Snow Timeline and Affected Regions
According to data from WX Charts, which utilises advanced modelling systems and Met Desk information, a major downturn in conditions is expected in and around December 15. The charts, marked with blotches of white, grey and purple indicating snowfall, show the wintry weather persisting for a continuous 21-hour period.
The first snow flurries are anticipated to begin at approximately 9am on December 15. Initial hits will affect Northern Ireland, Wales, and parts of northern England. The most intense accumulation is likely north of the border, particularly across the Scottish Highlands. Further south, areas from the Midlands northwards can expect a lighter dusting.
Escalating Conditions and Long-Term Outlook
The snow is forecast to remain throughout December 15 and into the following day, with conditions worsening significantly by 9pm on the 15th. At this point, heavier snowfall is predicted for Northern Ireland, northern England, sections of the Midlands, north Wales, and virtually all of Scotland.
In the short term, the BBC Weather team offers a contrasting picture. The outlook for the first weeks of December suggests mostly mild and unsettled conditions, with temperatures near or above the seasonal average. The period is also expected to be wetter and windier than usual.
Their forecast for Tuesday, December 2 to Sunday, December 7 describes "Unsettled but mostly milder than average" weather. It details breezy conditions with sharp showers, particularly for Scotland where some will be wintry over the Highlands. A couple of bands of frontal rain with stiff winds are due on Thursday and Friday, though a drier, colder interlude may bring local frost and fog by Friday morning.
Uncertainty for Late December
Looking further ahead to later in December, there is a chance of high pressure becoming more established, but forecasters stress this remains very uncertain. For the coming weekend, changeable conditions are expected with blustery showers and sunshine, with the mild theme continuing thanks to west to south-westerly winds.
This potential pre-Christmas snow event, pinpointed by modelling data, serves as a stark reminder of the UK's volatile winter weather, following a period of relative mildness.
