Schools shut as snow causes more travel problems
· BBC NewsPaul Pigott
BBC News
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Some rail passengers will have to get the bus with snow still on the ground in many places including Bettws Gwerfil Goch, DenbighshireImage source, Olga | BBC Weather Watchers
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Slide 1 of 4, a snow covered country lane. The trees, hedgerows and verges on either side of the road are blanketed in snow. the road has two tracks where tyres of vehicles has melted the snow into two dark lines that run to the top of the picture where the sun is setting in a yellow sky. , Some rail passengers will have to get the bus with snow still on the ground in many places including Bettws Gwerfil Goch, Denbighshire
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Snow is causing a second day of school closures and travel disruption.
Almost 50 schools will be shut on Wednesday in Wrexham, external, Powys, external, Caerphilly, external and Denbighshire, external.
Meanwhile buses replaced trains between Llandudno, Conwy county, and Blaenau Ffestiniog in Gwynedd and a road is Wrexham is shut.
The Met Office has issued six yellow warnings, external for snow and ice across the UK, with the warning for Wales in place until 10:00 GMT on Wednesday.
A lorry stuck in snow near Bwlchgwyn, Wrexham county, left a section of the A525 impassable in both directions.
Snow started falling across parts of the UK on Monday night, causing more than 140 schools to shut in Wales and several roads to close on Tuesday.
Transport for Wales said 13% of its services had been disrupted due to severe weather on Tuesday.
The UK Health Security Agency also issued the first amber cold weather health alert of the season, warning conditions could be dangerous for elderly and vulnerable people.
"With cold Arctic air firmly in place over the UK, continued winter hazards are likely through much of this week," said Met Office chief meteorologist Neil Armstrong.
The Met Office said cold northerly winds will continue through the week across much of the UK, with further warnings likely.
It added that temperatures were likely to increase from the south-west this weekend, though this will be accompanied by some strong winds and heavy rain.
The Alzheimer's Society warned that cold weather can be "particularly challenging" for people with dementia.
"Colder temperatures can be difficult for a person with dementia to adjust to, and they may not always be able to communicate that they are cold - or they may not even recognise it themselves," the charity said.
Another charity, Asthma and Lung UK, urged those with lung conditions to be "extra careful".
The charity warned cold weather can trigger potentially life-threatening asthma attacks or "flare-ups" for people with other lung conditions.