30/12/2017 Weather for the Week Ahead


30/12/2017

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Progressively through the last few days of 2017,

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the weather will be turning less wintry, but there are now signs

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that something colder could return

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through the first part of 2018.

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Friday certainly brought some of us

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some wintry scenes, but more of us will be

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getting into mild air as we head through this weekend,

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particularly in the south, something that bit colder

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holding on towards the north.

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Now, the mild air has been ushered in

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by a band of rain. As that slides northwards

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across Scotland during Saturday,

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it could still be cold enough here

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for some snow over the hills.

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Then we see bright skies and sunshine

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and then down to the south,

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an area of cloud and rain

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just flirting with southern England

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and the Channel Islands.

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Mild here, though -

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13 in Plymouth, just 3 in Aberdeen.

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Now, Saturday night brings the potential

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for some stormy weather.

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It doesn't look like much on our chart,

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but the Irish weather service

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have named this developing area

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of low pressure Storm Dylan.

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It could bring gales

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for Northern Ireland and Scotland.

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It could also bring this band of heavy rain

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with squally winds southwards

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and eastwards across England

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and Wales through the first part

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of New Year's Eve.

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Then we're expecting things to brighten up

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with some sunshine,

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a scattering of hefty showers

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and all of us just about into that milder air -

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6 to 12 degrees.

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If you're planning to celebrate at midnight,

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there's a good chance of having clear skies overhead.

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One or two showers blowing through on the breeze,

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particularly in western areas,

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and that breeze will be quite strong

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so it may feel a little bit chillier

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than temperatures of 5 to 9 degrees suggest.

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New Year's Day,

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the weather chart looks like this.

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Quite complex, actually -

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low pressure to the north,

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another low trying to run its way in

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towards the south and in between,

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a zone of breezy, yes,

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but fairly bright weather,

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some spells of sunshine.

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Windy with rain into northern Scotland,

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still cold enough for snow over the high ground here

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and also cloud and rain for the Channel Islands

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and the south of England

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and temperatures perhaps at this stage

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just a couple of degrees down

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at 4 to 10 degrees.

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Now, into Tuesday,

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things are likely to start off fine and dry,

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but our next Atlantic frontal system pushes in.

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Outbreaks of rain,

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increasingly strong winds

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and that is the theme for the start of the week -

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things chopping and changing,

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quiet spells and then wet and windy spells

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following in quick succession,

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all being pushed along very quickly

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by areas of low pressure.

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Quite a deep low likely to be moving its way

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across the north of the British Isles on Wednesday.

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That could bring gales, bands of rain,

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followed on by showers.

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Still cold enough for those showers to be wintry

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over high ground in the north

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with some spells of sunshine in between.

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So, the theme during next week

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is a strong jet stream,

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the winds high up in the atmosphere

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really energising the weather systems

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and pushing them through quickly,

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but there are signs of a change later next week.

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We're expecting some cold air

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to dive its way out of Canada across the Atlantic

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and that will have the effect

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of turning the jet stream a little bit bendier,

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more kinks in the jet stream.

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Now, what that means

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is that our weather pattern

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may slow down a little bit

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so while there will still be areas of low pressure

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close to the scene, there's a bit more chance

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that high pressure will have an influence

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as we go into next weekend.

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Low pressure still close by

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and that's likely to bring us

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a generally north or north-westerly wind.

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What does all that mean?

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Well, longer dry spells are likely into next weekend,

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albeit with some further rain and perhaps some snow

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with things expected to turn colder.

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That's all from me. Bye for now.

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