28/11/2017 Weather for the Week Ahead

Hello. Monday is likely to be the mildest day of the week ahead.

Colder air is going to return, and in the longer term,

it is going to be the position of the jet stream that will be crucial.

What we're seeing now is the milder westerlies being

replaced by colder northerlies.

High pressured the west, low pressure to the east

and those northerly winds bringing down some showers.

A lot of showers to come for Northern Ireland, West Wales

and the south-west of England.

Wintry showers again for northern Scotland.

Initially, showers around coastal areas of north-east England.

As the wind picks up, we blow them further inland

all the way down to the Midlands and across East Anglia.

If you don't get a shower,

you will certainly see more cloud around and it will feel cold.

Temperatures on Tuesday lower than they were on Monday,

so 5 to 8 degrees fairly typically

and feeling cold in the wind as well.

So we're now starting to see this colder air returning

much as it did last week.

So the milder air that we had on Monday was just a blip,

if you like.

That colder air and northerly winds will be pushing back in again.

Particularly windy down the eastern side of England and Scotland.

That's where we'll see most of the showers, most of the cloud.

Further west, fewer showers on Wednesday

for Northern Ireland, west Wales and the south-west.

Still a few wintry ones continuing across Scotland.

Most of the snow will be over the hills in Scotland,

but those temperatures - 3 to 7 degrees.

So another cold day, especially in the wind.

But, again, many inland areas dry with some sunshine.

High pressure then to the west, low pressure to the east.

You can see the isobars, the tramlines

and those winds coming all the way down

from a chilly northerly direction.

Actually on Thursday, the weather very similar to that of Wednesday.

So still a few showers across these western exposures

but more showers down the eastern coastal areas of England.

Temperatures 3 to 5 degrees Thursday,

likely to be the coldest day

of the week ahead.

What we start to see on Thursday into Friday,

around the top of this area of high pressure,

signs of a bit more cloud beginning to topple down from the north-west.

That weather front, a warm front, rather weak.

Now, the coldest air still across this corner of the UK towards

East Anglia and the south-east, Lincolnshire too.

That's where they'll still be a chilly wind and maybe a few showers.

Head further north-west, those temperatures slowly picking

up a bit, but there will be more cloud around.

Still another chilly day on Friday.

That weak weather front, that warm front continues

to topple down around that area of high pressure.

What it does, it brings in more cloud,

it brings down some milder air.

This is Atlantic air that's come around the top of

the high pressure and that is moving down across the UK.

So more cloud, quite low cloud, a bit of rain and drizzle around too.

No great amounts, but those temperatures will be higher,

maybe getting 10 degrees in Belfast on Saturday.

Almost unheard of.

Now, I talked about the jet stream.

This is what we're seeing over the weekend -

the jet stream to the north of us then diving

down into Central Europe

and this is where the colder air is getting pushed.

So, across the UK, over the weekend we are seeing milder air coming in.

But it may only be briefly because, as we move into next week,

the position of the jet stream changes.

You can see those winds there are digging down towards the UK

and this is where the colder air is going to be.

Big fluctuations in that jet stream.

Milder air across the Atlantic, colder air in the UK.

So northerly wind returns into next week.

That means more sunshine and showers.

Quite a few showers down the eastern side of the UK.

This is probably where it's going to feel coldest of all

with the winds off the North Sea.

But with clear skies overnight, we're going to find those

night frosts becoming widespread once again. Goodbye.