Powys residents are being warned to brace for "frequent and heavy snow" this week (November 18 to 24).

The Met Office has issued yellow weather warnings for parts of the UK - including North Wales - due to snow and ice, some of which will come into force as early as 4pm on Sunday (November 17).

Powys could also see snow this week, as early as Tuesday (November 19), according to forecasts.

But the heavier falls in Powys are forecast for later in the week/into the weekend.

When will it snow in Powys?

The Met Office forecast for Wales said "frequent and heavy snow showers" are likely to hit between Tuesday and Thursday (November 19 to 21).

The forecast for that period reads: "Turning much colder with a mixture of sunny spells and occasional wintry showers.

"Frequent and heavy snow showers are possible at times, mainly in the north. Frost and ice overnight."

It looks like the snow could be here to stay, according to the Met Office's UK long-range weather forecast (November 21 to 30).

How to drive safely in snow and ice

The long-range forecast says: "Cold or very cold conditions are expected across most if not all parts of the UK early in this period, with wintry showers affecting in particular northern parts and exposed coastal districts, although it may well be largely sunny inland.

"Overnight frost will be widespread and occasionally strong winds will result in significant wind chill.

"However, there is an increasing chance through the first weekend and into the following week of more organised areas of rain, snow and strong winds affecting many areas, this probably also associated with milder temperatures, at least in the south.

"Later in the period, conditions remain uncertain, but it is most likely to remain mostly unsettled with further spells of rain and snow."

Where to see snow in Powys

Most of Powys - including Newtown, Brecon and Machynlleth - is set to see snow at some point this week.

Northern areas of Powys including Newtown are likely to see the first lot of snow this week on Tuesday - with light levels expected, WX Charts shows.

A weather map from WX Charts for Saturday (November 23) showing where it is going to snow (in purple) in Powys.A weather map from WX Charts for Saturday (November 23) showing where it is going to snow (in purple) in Powys. (Image: WX Charts) While the lower areas of Powys including Brecon and Llanwrtyd Wells will see heavier snowfalls of around 1cm to 2cm per hour late on Wednesday (November 20).

More snow is expected across the county on Friday (November 22) before the heaviest falls of the week hit Powys on Saturday (November 23).

Some areas including Welshpool could see falls of around 5cm per hour, according to WX Charts.

RECOMMENDED READING:

Temperatures are also set to drop below 0 this week, according to the Met Office.

Friday is forecast to be the coldest day of the week with temperatures in Newtown and Welshpool set to drop to -2.

While it will reach lows of -1 in Brecon and Machynlleth.