Snow in South Wales: the latest weather forecast

A yellow weather warning of snow has been issued for South Wales, with many roads in Carmarthenshire suffering snowfall and driving restrictions in place along the M4.

The warning, which urges the public to "be aware", has been issued from midday today until midnight.

Light snow is forecast in Carmarthen today until around 3pm, while sleet is set to fall in Swansea.

Neath could see a flurry of the white stuff until midday, while in Cardiff snow and sleet is on the cards until around 9pm.

Temperatures will linger around the 2C mark, but the Met Office warns it could feel as cold as -2C.

The public are advised to take extra care, and be aware freezing fog patches may add to travel difficulties.

Many roads in Carmarthenshire are currently suffering snowfall, with scores of accidents, BBC travel broadcaster Mark Buckley recently tweeted.

Speed restrictions are in place along the M4 in both directions between J30 Cardiff Gate and J38 Margam due to poor driving conditions, and between J24 Coldra to J30 Cardiff Gate.

More than 20 schools in Carmarthenshire are closing due to heavy snow, with parents being asked to collect their children.

Click here to find out more about Carmarthenshire school closures.

Arriva Trains Wales is reporting a number of delays, particularly affecting services in Swansea and Cardiff.

To find out more about train disruptions, click here.

Some flights from Cardiff Airport are cancelled or operating with a delay. For live flight information, click here.

Thursday is forecast to be chilly and cloudy, with temperatures feeling as low as -4C. There are currently no weather warnings in place.

Temperatures look set to rise on Friday, reaching highs of 7C. However, the Met Office warns it could feel much colder - as low as -1C at times. Showers are expected throughout the afternoon.

Saturday is predicted to be cloudy, with temperatures varying between 4C and 7C.

UPDATE 12.35PM:

Dyfed Powys Police say main roads in Carmarthenshire are passable but motorists are advised to make only essential journeys, BBC News reports.

Three people were injured in a minibus crash in Drefach, which has blocked the Meidrim to Bancyfelin road.

Meanwhile two motorcyclists have been taken to hospital after a crash involving two cars in Birchgrove, Swansea, at 9.15am.

Gower College Swansea campuses at Gorseinon, Tycoch and Llwyn y Bryn are to close because of the weather.

A yellow weather warning of snow remains in place for Swansea, Carmarthenshire, Neath Port Talbot and Cardiff.

A further 2-5cm (1-2in) of snow or sleet is likely in places, with perhaps as much as 10cm (4in) over high ground.

UPDATE 1.10PM:

A yellow weather warning of rain has been issued for South Wales on Sunday.

The warning, which urges the public to be aware of localised flooding of low-lying fields, recreational land and car parks, as well as flooding of a small number of homes and businesses, has been issued between 3am and midnight.

Rain is forecast from around 3pm on Saturday, and set to fall in varying degrees until around 6pm on Sunday. Neath and Carmarthen may see further light showers later that night.

In Cardiff, rain is on the cards from 6pm on Saturday to midnight on Sunday. The showers are set to be heavy overnight but subside into lighter showers by 6am on Sunday.

The Met Office predicts wet road surfaces and warns of the possibility of ponding water, especially in known trouble spots.

There may also be local travel disruption, including longer journey times. Motorists are urged to drive according to the conditions encountered.

UPDATE 2.50PM:

The Met Office has issued a yellow weather warning of ice in South Wales this afternoon.

The warning, which urges the public to be aware of icy stretches on untreated roads and pavements, has been issued between 6pm on Wednesday and midday on Thursday.

A yellow warning of snow remains in place until midnight today.

The public are advised to take extra care when walking, cycling or driving in affected areas, and be aware journeys may take longer than usual.

UPDATE 3.30PM:

The B4309 between Llanelli and Five Roads and between between Furnace and Llanelli has now been re-opened and gritters are treating the road again, Dyfed Powys Police have tweeted.

UPDATE 3.58PM:

It is snowing heavily on the M4 between Port Talbot and Pont Abraham, according to reports on Twitter.

UPDATE 4.55PM

Snow could fall across parts of South Wales tonight, the Met Office has said.

Swansea could see light snowfall until around 9pm, while the heavy snowfall seen in Llanelli this afternoon could subside and fall gently between 6pm and 9pm.

Heavy snow could be on the cards in Carmarthen until around 9pm, while in Neath a flurry is forecast between 3pm and 9pm.

Cardiff is expected to see snow throughout the evening, turning heavy at 6pm and easing off to a gentle flurry at around 9pm.

Wind gusts of 25mph are forecast in the city this evening, and temperatures could feel as low as -4C.