Sudden stratospheric warming forecast

A Sudden Stratospheric Warming event in February 2018 was responsible for the 'Beast from the East'

Some of these frontal systems perhaps spreading further to the southeast, although much of the south and southeast will likely be relatively drier. Tuesday will likely be dry for most across the UK, with a chance of sunshine particularly in the northwest. Temperatures generally mild or rather mild, although with a chance of cold nights in the south, especially earlier in the period. Tonight: Remaining rather cloudy overnight with a few spots of light rain and drizzle in the west. Cloud increasing from the west with patchy light rain and drizzle arriving this afternoon, although staying largely dry in the east. Although the impact will become clearer nearer the time, any effect on UK weather is most likely to occur in late February and March.” Further into the period a transition away from high pressure in the south allows for more unsettled conditions to become widespread across the UK at times. The settled weather remaining for many into the end of the week, with some bands of cloud and rain possibly progressing into the north and northwest at times. This blocking high pressure can lead to cold, dry weather in the north of Europe, including the UK, with mild, wet and windy conditions more likely for southern areas of the continent. The forecaster wrote: "A major SSW often makes the jet stream meander more, which can lead to a large area of blocking high pressure over northern Europe, including the UK. For example, the SSW in January 2019 had no significant impact for the UK weather. It refers to an area between 10km to 50km above the earth's surface and its effects are not usually felt until several weeks later,