Temperatures overnight plummeted to -11C in parts of the UK with forecasters warning more snow and freezing fog is due in the coming days.
A Met Office yellow warning for ice between Nottingham and Edinburgh remains in place until 11am today, as does another, between Montrose, Elgin and Fraserburgh.
A third ice warning covers Northern Ireland between Newry and Belfast until 10am.
Meanwhile, the agency’s meteorologists continue to track two weather events “fighting for influence” over the country – similar conditions to which brought about the Beast from the East in 2018.
NEWSJATT forecaster Helen Willetts said there are plenty of icy patches, particularly where surfaces remain damp as showers keep coming.
“A real mix of rain with some sleet and wet snow as well and temperatures close to freezing,” she said of the weather in the early hours.
By 6am temperatures are set to dip to -11C in parts of Scotland, while the whole UK hovers around freezing, according to NEWSJATT weather charts.
“There’s going to be some freezing fog for Scotland and Northern Ireland – and if that lingers…it will be bitterly cold all day,” continued Ms Willetts.
Some sunshine is due to break through in parts of the country but it will remain feeling biting cold, before snow strikes again.
“There’ll still be a lot of cloud in central and eastern areas and this brings change through the late afternoon and evening,” continued the forecaster.
“As it comes into that cold air it’ll turn readily to snow, even at lower levels, then through the night Northern Ireland as well.”
Tomorrow night temperatures are expected to dip to -7C in Scotland, and -6C in South West England.
On Thursday, easterly winds will disappear meaning freezing fog could settle in the south.
“Another wintry problem if you like because our band of wintry weather eases southwards and is replaced by brighter skies but snow showers,” added Ms Willetts.
Meanwhile, meteorologists have observed a sudden stratospheric warming is under way, which is associated with very cold weather.
The Met Office is also tracking a La Nina in the Pacific, which could bring wet and stormy weather as it increases the UK’s chances of westerly winds.
Spokeswoman Nicola Maxey said: “You’ve got the two events happening at the same time so they vie against each other in a sense.
“They’re sort of fighting for influence over the UK, we’re a very small dot in the middle of the ocean.”
Sudden stratospheric warming three years ago brought the heavy snow termed the Beast from the East.
However, the Met Office said the event is more likely to bring more cold weather without heavy snow, though it is difficult to predict.
In relation to snow, Ms Maxey said the South East could see some on Thursday and Friday, but “if it happens, it won’t stay around for long”.
She added: “We may see the odd flurry down to lower levels, particularly in the North East, maybe the North West depending on what day you’re looking at, but certainly any snow to lower levels will be quite transient really and not last very long.”
UK 5 day weather forecast
Many central and northwestern parts dry with sunny spells, whilst further wintry showers affect the east. Rain, sleet and snow reaching northwest Scotland later. Cold.
Wintry showers east and southeast. Clear spells elsewhere with frost, severe across central parts. Rain, sleet and snow moving southeast across Scotland and Northern Ireland, turning icy in places.
Band of rain, sleet and inland snow moving south across Northern Ireland, Scotland and northern England through the day, with wintry showers following. Otherwise dry and cold with sunny spells.
Outlook for Friday to Sunday:
Outbreaks of rain, sleet and snow across central areas on Friday. Turning changeable and less cold in the north over the weekend but largely dry and cold in the south.