Heavier snow is expected to fall throughout much of Friday and into Saturday on even higher ground across parts of central, eastern and northern Scotland.
Stormy weather is on collision course with Ireland over the next 36 hours with Met Éireann issuing a wind warning to run with an early rain warning.
That band of wet weather is expected to move northeastwards across the United Kingdom but to weaken.
The sudden drop in temperature at the weekend, with winds from the east, have led to the weather phenomenon being dubbed the Beast from the East Two after a similar front brought freezing temperatures and heavy snow to the United Kingdom in early March.
The Met Office is predicting snow for huge swathes of the United Kingdom this weekend as Siberian winds sweep in bringing up to 10cm of snow for London and the South East.
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"The weather front bringing outbreaks of rain northwards and eastward, as we get into the weekend, it starts to move backwards again because it bumps into the area of high pressure". Snow is also in the forecast for St Patrick's weekend.
As this air crosses the North Sea snow showers will form on Sunday, and could well merge into convergence lines producing 2-5 cms of snow in places.
The warning says: "Snow showers are likely throughout Sunday, and where these converge some snow may well accumulate and could then prove disruptive".
The level two alert suggests severe cold weather and heavy snow could fall on Friday morning until Monday.