Drivers are being warned of icy conditions after the Met Office issued snow and ice yellow weather alerts for large areas of Scotland, England and Northern Ireland. Health officials have also issued cold health alerts, warning of the effects on the NHS.
Thursday 30 November 2023 19:05, UK
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We're ending our updates on the weather warnings across the country for now.
Check the forecast where you are using our Sky News tool below.
Clear skies may often mean a hard frost at this time of the year but there can be upsides, too.
The Met Office says the aurora - or the northern lights - could be visible in parts of the UK tonight or into tomorrow.
Its "aurora forecast" says there may be "some enhanced views of the aurora across northern Scotland and similar latitudes during the evening of 30 Nov".
It also adds some parts of northern England and Northern Ireland may be able to see the lights before dawn.
From 2 December, the chances of seeing anything reduce again. So keep your eyes peeled.
As we start heading into the weekend, you may be wondering whether the conditions will affect your plans.
For most people, tomorrow will be a largely dry and fine day with lengthy periods of winter sunshine.
Parts of Scotland and Northern Ireland will see more cloud early on in the day with a few wintry showers.
The eastern coast will see further wintry showers through the morning.
Saturday will be a mainly dry and sunny day for many.
Scattered showers will spread into the west for Wales, as well as northwest and southwest England, and some of these could be wintry further north.
It will be bright in the North and West on Sunday, with some cloud and a few spots of rain further south and east.
The Yorkshire Wolds are being blanketed in heavy snow, creating a stunning wintry landscape.
Network Rail Scotland has said it has been discussing with colleagues how the very low temperatures forecast over the next few days could impact trains.
It said the cold weather can cause "ice blocks to form and jam our points (moveable track trains use to change direction)" or even "cause them to freeze solid".
In addition, "icicles can form on the roof of tunnels, posing a hazard".
"What are we doing about it? We already have hundreds of heating strips fitted to stop the track freezing up," the rail network said.
"Staff will be out and about to apply antifreeze where required and inspect tunnels for any icicles forming."
The Met Office has published an updated forecast for tonight.
It says there will be a widespread frost across the country - brace yourself for defrosting the car tomorrow morning.
There will also be patchy freezing fog and icy stretches by dawn, which could create hazards for commuters.
But during the night itself, expect wintry showers if you're in a North Sea coast area.
It will be drier in the southwest but there's also a weather warning for ice there, as we reported earlier (see 13.13 post).
Away from the freezing weather conditions, data from the UN weather agency has found this year is all but certain to be the hottest on record.
The World Meteorological Organisation (WMO) said the average temperature for the year is up some 1.4C from pre-industrial times.
The WMO's secretary general said the onset earlier this year of El Nino, the weather phenomenon marked by heating in the Pacific Ocean, could tip the average temperature next year over the 1.5C target cap set in Paris.
"It's practically sure that during the coming four years we will hit this 1.5, at least on temporary basis," Petteri Taalas said.
"And in the next decade we are more or less going to be there on a permanent basis."
The WMO issued the findings for today's start of the UN's annual climate conference, this year being held in the United Arab Emirates city of Dubai.
The UN agency said the benchmark of the key Paris accord goal will be whether the 1.5C increase is sustained over a 30-year span - not just a single year - but others say the world needs more clarity on that.
"Clarity on breaching the Paris agreement guard rails will be crucial," said Richard Betts of the UK's Met Office, the lead author of a new paper on the issue with the University of Exeter, published in the journal Nature.
"Without an agreement on what actually will count as exceeding 1.5C, we risk distraction and confusion at precisely the time when action to avoid the worst effects of climate change becomes even more urgent," he added.
The cold conditions have left a layer of snow in some parts of the UK.
Here are just a few of the images emerging today of the snow.
Amid the freezing conditions the likelihood of frozen or burst pipes can increase.
If you think that one of your pipes might be frozen, turn off your inside stop tap and open all your taps to drain the system as quickly as possible.
Here is some advice provided from the in the event of a burst or frozen pipe:
The National Grid has announced it will pay some households not to use energy for a set window tomorrow, as it continues to react to freezing weather.
"Our forecasts show electricity supply margins are expected to be tighter than normal on Friday evening," an ESO spokesperson said.
"We are activating a live demand flexibility service event between 4.30pm-6pm tomorrow."
It added it did not mean electricity supplies were at risk and said people should not be worried.
"These are precautionary measures to maintain the buffer of spare capacity we need."
You can learn more about what this means here...
