The UK is bracing for a significant snow event, now upgraded to as much as 17 inches (44 cm) in certain areas. According to WX Charts, using the advanced ECMWF weather model, snow will begin sweeping across northern England, the Midlands, and Wales around midday on January 7.
By 6pm that same day, heavy snow is expected to reach southern England, intensifying the widespread impact across the country. By midday on January 9, the model predicts up to 44 cm of snow settled on the ground in Merseyside, with 40 cm in the Pennines and 38 cm in northern Scotland. Wales is also forecast to receive significant snow accumulations of around 40 cm, while major cities such as London and Birmingham can expect between 6 cm and 10 cm of snow.
The far south of England appears likely to remain mostly snow-free by midday on January 8. However, the north of Scotland could see the highest totals, with up to 48 cm (19 inches) possible in the most northern regions.
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The BBC Weather forecast for the week of January 5 to 11 highlights a brief milder spell where temperatures may approach or slightly exceed the January average. While a drier interval might initially occur, Atlantic frontal systems are expected to move in, increasing precipitation. Most areas will see rain, but snow remains likely at higher elevations, especially across the Scottish Highlands. Northern and western parts of the UK are anticipated to experience wetter conditions than southern and eastern regions.
Forecast uncertainty remains, as a potential high-pressure system could form to the west. If this happens, it may block frontal systems and result in a drier outlook for the UK.