14/01/2018 Weather for the Week Ahead


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14/01/2018

Detailed weather forecast.


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Hello. If you're fed up of the almost relentless greyness

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of the skies over this past week, things are about to change.

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We're about to see a bit more sunshine but a marked change

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in the way the weather feels. Bringing about the

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change is this weather front which on Sunday is way to

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the north-west in the UK to begin with, it's going to be

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driven towards us by a strengthening jet stream.

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Before it arrives, well, it's more of the same for Sunday -

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for many of you, at least.

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Lots of cloud around, the odd spot of light rain

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or drizzle, maybe a better chance into the afternoon

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of a few cloud breaks here and there, bit of

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sunshine coming through, particularly across

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parts of Northern Ireland and Scotland as the

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breeze starts to strengthen. That strengthening breeze

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is only a sign of the change getting closer and closer.

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These are your afternoon temperatures for

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Sunday, little bit down on Saturday's values,

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but where they should be for the time of year.

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So here comes the change. Up towards Western Scotland

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and Northern Ireland, a spell of heavy rain

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and strong to gale force if not sever gale force winds.

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Accompanying it is that band of rain. Active weather

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front pushes its way southwards and eastwards across all

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parts through Sunday night and into Monday morning.

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On the charts, by the time we start Monday morning it's

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towards the south and east, but follow the isobars

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back behind it, it's coming from a very cold source,

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Greenland, northern parts of Canada, and that colder air

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will be pushing southwards and eastwards as we go

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through Monday, introducing a marked change for all of us.

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So let's take you through Monday. If you're up early

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and commuting across East Anglia and the south-east

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it'll be a wet and very windy start. Still gales around

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across parts of England and Wales first light

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on Monday morning. Persistent rain gets out the way

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during the morning, then some sunny conditions developing

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but a scattering of showers, showers possible just about

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anywhere into the afternoon. Most frequent to north

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and west and as temperatures drop through the day

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those showers will turn increasingly wintry,

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initially across parts of Western Scotland and

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Northern Ireland.

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But the wintry weather will become a bit more extensive

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into Tuesday as we see those north-westerly winds

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bring in yet colder and colder air.

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The showers will push across just about anywhere,

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given the strength of the wind. Most frequent in the west,

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heavy with hail and thunder and some sleet and snow,

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some of the snow coming to low levels across parts

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of Scotland. Northern Ireland and northern England, too,

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get a slight covering in places. And we stick with that flow

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of air across the UK, it's a mixture of sunshine and

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frequent showers, showers still at the heaviest

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towards the north and the west and an added wind chill

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across the country, so wherever you are through Tuesday

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and Wednesday, it will feel colder than the thermometer suggests.

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But we've got to watch this on Wednesday night,

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we could see in that run of north-westerly winds

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a very nasty area of low pressure develop.

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It looks like it's set to track across the southern

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half of the country, but its exact position will be crucial

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because on the southern flank of it we'll see the strongest

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of the winds, maybe severe gales through the night

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into Thursday, some snow on the northern flank of the

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low pressure system, but it does clear off into the

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near continent very, very quickly indeed.

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So it's going to be an overnight feature,

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so for Thursday sunshine and wintry showers probably sums it up.

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End of the week we've got that run of north-westerly winds

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with high pressure to the south-west,

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low pressure to the north,

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this is the continuous direction we get the winds coming in from,

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but as we go through the weekend that area of low pressure finally

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takes some movement off into the near continent,

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allowing a more northerly air flow to set up. That's still going to be

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feeding in some pretty cold air

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but as winds fall lighter the story into the weekend

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may be fewer showers

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but increasing risk of some pretty sharp overnight frost.

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So for the next ten days, get Sunday out the way,

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the winds pick up, it turns colder and wintry,

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made to feel much colder

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given the strength of the winds

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but into the weekend it's those

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overnight frosts which will return.

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