20/04/2016 Weather for the Week Ahead


20/04/2016

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Hello, again. There are still a couple of days of fine,

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warm spring sunshine before the weather turns.

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But let's set the scene on what's happening right now.

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And high pressure is sitting right over the UK.

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It's keeping these cloud

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and weather systems at bay for the time being but this low will

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push cloud northwards, the winds will pick up ahead of it as well.

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And these weather systems,

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this cloud will just nudge into the north-west of Scotland on Wednesday.

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But away from here, a lot of sunshine around,

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a lovely day on Wednesday.

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Stronger, gusty winds, particularly across the south-west of England.

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Here, the sunshine may be a little bit hazy.

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But on the whole, many places will actually be a bit warmer

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than on Tuesday.

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The top temperature this time for the west, the north

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and west of Wales, and north-west England. Could get 17 degrees.

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Now, our high pressure, as we head into Thursday,

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is starting to get squeezed by that low

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and those weather fronts coming up from the south.

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More isobars, stronger winds, and a weak weather front just

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nudging into the north of Scotland.

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We've still got lots of dry weather,

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there will still be some sunshine around on Thursday.

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There'll be stronger winds in southern England and South Wales

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and there's likely to be more cloud ahead of the rain,

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which is staying out at sea at this stage.

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A little rain for the north of Scotland, best of the sunshine for

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these central areas and temperatures could get up to 16 degrees.

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Friday looks different.

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We've got this rain now starting to edge into the Channel,

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maybe affecting the south-west of England, possibly South Wales.

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A few showers coming into Scotland,

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but temperatures with the northerly wind will be some

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four degrees lower on Friday compared with Thursday.

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And that's because the high pressure that is right over the UK

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right now on Friday will have retreated out into the Atlantic

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and that is crucial.

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With that big area of high pressure there,

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we start to draw down our winds from the north.

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And this is the pattern that we've got as we head into the weekend.

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Those colder wins possibly coming all the way down from the Arctic.

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So, as we head to the weekend, it's getting colder,

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a bit like it did last weekend.

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There will be some sunshine around on Saturday,

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but there could be showers around, too.

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And maybe a bit of sleet and snow over the hills.

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Get in a heavier shower, you may get some hail as well.

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Temperatures struggling, at six degrees in Aberdeen,

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possibly double figures across southern England.

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And again, some sunshine on Sunday after a chilly start.

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A chilly wind blowing again with some sunshine

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and also some showers around, too.

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So the weather pattern that we're moving into during the weekend

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and into next week looks like this.

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This is the jet stream.

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So there's no fast-moving jet whistling across the Atlantic,

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instead it's moving north-south in a looping pattern.

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This is a meridional flow that we have.

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And we're on the cold side of that jet stream, it looks like,

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throughout next week, in actual fact.

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And with this sort of configuration,

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you find an area of low pressure to the east of the UK,

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big area of high pressure in the Atlantic,

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and this weather pattern is stubborn.

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This weather pattern takes a lot of shifting.

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Every time you have a high to one side, low to the east of us,

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you are going to you're going to draw down those winds

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from the north and just keep feeding in that colder air.

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So, this was actually a picture from last weekend

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and this could be similar to next week, actually.

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There will be a cold feel - looks pretty cold, doesn't it?

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There will be some sunshine,

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some of the showers could be of a wintry flavour as well.

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And it's possible that this weather pattern,

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bringing the colder air could linger into the start of May.

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