23/07/2016 Weather for the Week Ahead


23/07/2016

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Transcript


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Well, thanks for joining me.

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There's not been much change to our extended weather outlook since

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our weather forecast for the week ahead yesterday.

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Essentially, the weekend's going to be relatively cool across

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many western areas of the country but briefly warming up across

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the south-east of the country, where temperatures could actually

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nudge up to 29 degrees Celsius in London on Saturday.

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Now, we've had a fairly decent end to the working week.

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This is Friday's satellite picture.

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Quite a bit of sunshine, but then clouds bubbled up,

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we had a few showers around across Merseyside, northern parts of

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England and also one or two scattered showers across

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parts of the south-east.

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After a dry night, many of us waking up to some sunshine,

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but the weather will go downhill across western areas during

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the morning and into the afternoon,

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so that means across Northern Ireland and Scotland around

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the middle of the afternoon it's looking pretty damp,

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temperatures here on the modest side, around 17 degrees Celsius.

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This is much fresher Atlantic air,

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a polar, maritime air mass, if you remember your geography.

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And also we've got bits and pieces of light rain here across

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western parts of Wales and down into the south-west of England.

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But for the south-east, actually,

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and much of the Midlands, East Anglia, it'll be very, very warm.

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Temperatures could actually peak at around 29 degrees Celsius in London.

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For Saturday evening, not much change,

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so western areas hang on to some of that cloud with

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a few spots of rain, and one or two showers in other places, as well.

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Here's Sunday's weather outlook.

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Another weather front pushed by a very weak jet stream,

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which we'll have a look at in a second.

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This rain is going to nudge into Northern Ireland early in the

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morning and then eventually move into parts of Scotland,

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also Wales and down into the south-west, so quite a distinct

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difference between the weather here in the east and also the west.

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The west will remain fresh, temperatures of 17 to 20 degrees,

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still around 26 for London and for Norwich.

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By far again the best of the weather will be across the south-east.

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Now, early next week we are anticipating

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a shot of slightly cooler air from northern parts of the Atlantic,

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so that means many of these northern and western areas will be in

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the teens, whereas the south-east just about hanging on to

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temperatures into perhaps the mid 20s, at the very least the low 20s.

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So, a day of sunshine and showers, quite breezy.

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There's a low pressure centred on Monday just to the north of

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Scotland, all around Scotland, and here around, say, 16 to 18,

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which is actually not bad,

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and temperatures of around 23 again for London and Norwich.

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And then, come Tuesday,

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it looks as though this ridge of high pressure starts to sort of

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make inroads across more southern and central areas of the UK,

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whereas in the north-west we keep getting these little areas of

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low pressure nibbling on the north-west of the country.

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So, this is the kind of pattern that we're really anticipating for

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most of the week, so these weak weather systems being again

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pushed by this weak jet stream.

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I showed you this graphic yesterday. There's no reason to change it.

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It is a very weak jet stream

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that's, where the weather fronts are produced, pushing them

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in our direction,

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whereas more southern areas holding on to that more settled weather.

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And actually, this jet stream of course extends across the Atlantic,

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all the way into Canada.

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It almost sort of domes northwards across this part of the world,

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so it's way to the north. You can hardly see it here, it's so weak.

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To the south we've got some major heat,

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which is continuing to build across many areas of the United States.

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So, next week, I think, back here across the UK,

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it's going to be pretty much what we'd expect this time of the year,

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so neither particularly hot nor particularly cool with some

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sunshine and a bit of rain from time to time.

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We're brave, aren't we? Yes, I am.

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