UP TO two inches (2-5 centimetres) of snow is forecast to fall in east Wales during the second half of tomorrow, as part of a cold snap affecting large parts of Britain.
The official temperature will remain above freezing all day tomorrow, according to the Met Office forecast.
But it will seem much colder by daybreak on Sunday – as low as -6ºC – with little improvement until next Tuesday.
By then, there is likely to be frozen snow on the ground, as from noon on Saturday a warning for Wales indicates rain will increasingly turn to snow in the east.
Potentially, five to ten centimetres of snow could fall on high ground, with 2-5cm lower down.
Temperatures are predicted to fall rapidly on Saturday evening, with icy surfaces causing possible disruption on roads.
The public is being warned of potential travel delays while councils are gearing up to grit major and key routes.
Areas such as Blaenau Gwent, at risk of some of the heaviest snowfalls, are on alert. Council chiefs there are preparing to activate a snow plan, with 2,000 tonnes of road salt ready to grit roads to keep services going.
Across South Wales, anyone planning to go out after noon on Saturday is advised to check the weather forecast and make sensible preparations in the event of their journey being disrupted.