20/09/2014 Weather for the Week Ahead

Hello. Coming up, why our weather next week becomes more changeable

and the role the jet stream has to play in that.

But first all the weather changes we are all going to experience as

we go through this weekend, because if you've had thunderstorms

they will be easing.

If you've had low cloud, mist and drizzle all of that clears away

and cooler, but fresher air will be pushing

South across the United Kingdom,

as we lose the influence of this area of low pressure to the

Southwest of us which has been pushing energy

our way in the form of thunderstorms for some, high-pressure builds in

and that's going to give us the cleaner, fresher air.

I think the biggest change will be in Eastern Scotland

and North East England.

After a whole week of low cloud, mist

and murk, this cold front moving South on Saturday will clear all of

that away and give us brighter skies, better visibility to look forward to.

The whole of the UK will be in that cleaner,

fresher air by the time we get to Sunday.

Let's look at the weekend day by day.

We start with Saturday and still a lot of mist,

low cloud and murk across England and Wales.

Plenty of cloud throughout the day. There will be some showers to be had.

There will be

some heavy ones developing across parts of Southern England into the

afternoon even though it's not as warm, not as muggy as it's been.

Any showers very hit and miss, and a few throughout affecting

parts of Eastern England that could be heavy and thundery.

And the odd shower

elsewhere in England and Wales, but also plenty of dry weather.

For Scotland and Northern Ireland there will be a few showers moving

through on this North, Northwesterly breeze,

but there will also be some sunny spells to be had.

Sunshine in places that have not seen it for some time.

But as the area of high pressure builds in for Sunday it does mean

under clear skies, especially for the Northern half of the UK

as Sunday begins, it's going to be a colder morning than we've

had recently. There is even the risk of ground frost in places.

Sunday most start dry, a mixture of cloud and sunshine and that fresh

air, less humid air sweeps all the way down towards

the South of the United Kingdom.

Temperatures aren't as high, but it's better air quality,

better visibility.

That area of high-pressure is still around for most of us on Monday.

That same sort of weather applies

after a chilly start. A colder start across Southern areas on

Monday morning than we've had recently.

Some cloud with breeze heading into the North

and North West of Scotland, some rain too, courtesy of a weather front

that weakens as it starts to move South on Tuesday.

Following behind there will be another heading

into Northern Scotland.

That gives you a sign our weather is beginning to change.

Weather systems coming in one after another.

We have not had that for a while.

And because the jet stream,

and this is how it's been looking for the past few weeks, has been blocked,

all the energy from it, and it carries weather systems our way,

hasn't been coming to our shores. That is now changing.

As we go through next week, look at this, midweek onwards that

jet stream is heading right towards the UK with those weather systems.

But the influence felt more towards the Northwest,

first to get those weather systems from the jet stream, and not

so much down towards the Southeast.

Around this area of high pressure that's where our weather will be

coming from, so we end up with a

Northwest-Southeast split towards the end of next

week, even into the following weekend.

The North and West of the United Kingdom will see most frequent

incursions from weather systems giving occasional rain,

breezy conditions, but we're not going to get too

many of those down towards the South and East of the UK.

So here it is drier and brighter in comparison.

Again all the way through the end of next week into the weekend,

even the start of the following week a Northwest-Southeast

split across the UK.

Our weather turning more changeable

and again the jet stream has a major part to play in all of that.

We'll keep you updated day by day. For now, goodbye.