Met Office issues amber warning for snow until 8:00 on Wednesday
Heavy snowfall overnight and through the morning causes transport disruption
Thousands of children enjoy a "snow day" as schools across the country close
Forecasters predict the big chill will last until at least Friday
Giancarlo Rinaldi
South Scotland reporter, BBC news website
That's it from our live page for now, thanks for joining us throughout the day.
An amber warning still remains in place across parts of southern and central Scotland until 08:00 on Wednesday.
Scottish Borders Council's assistant emergency planning officer Kevin Sewell said snow in the region had been more widespread than first anticipated.
"Today has been eventful - we had a yellow weather warning which has escalated to an amber weather warning which has meant we have had to get more resources out to deal with snow on the roadways," he said.
Snowfalls in the Borders spread more widely than expected
"That has had a knock-on effect because we have had problems at school closing time with school buses and having to get children home by alternative means.
"We were not expecting it to come so far across the Borders - it was meant to be in Peeblesshire but it has come across most of the Borders."
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The M74 southbound in Lanarkshire has been closed between J12 Millbank and J13 Abington due to wintry conditions.
Traffic Scotland said gritters were working to make the motorway safe enough to re-open.
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Another reader, Cameron Scott, took this image earlier in the day.
It shows vehicles coming to a halt on Lanark Road in Carluke due to the poor road conditions with some drivers starting to leave their cars.
Image source, Cameron ScottBBC Scotland News website reader Stewart Hunt captured this image of another snow-covered route earlier today.
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BBC Scotland Weather
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BBC Scotland Weather
The latest snow depth details for today show southern Scotland leading the way.
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Dumfries and Galloway Virtual Operations Support Team (DGVost) is ready to swing into action at 18:00.
It brings together a range of agencies to co-ordinate effort and share information during major incidents and weather emergencies.
Mark Thomson of Dumfries and Galloway Council's resilience team said the worst impact was expected later tonight.
Image source, Police Scotland"The information we have currently from the Met Office is that we could expect 15cm to 25cm of further snow on the higher ground and between 5cm and 10cm of snow to lower lying areas," he said.
"Indications are that the most significant snowfall will happen between 20:00 and midnight tonight."
He said a relatively "low level deployment" was in place at present but resources were on stand-by should that need to be stepped up.
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Nick Miller
BBC Weather
What is thundersnow?
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Leisure activities are disrupted in many areas, including those hosted by East Renfrewshire's leisure services.
The council said....