12/07/2017 Weather for the Week Ahead


12/07/2017

Detailed weather forecast.


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Hello there. It was a mud-free Glastonbury,

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and so far so good in terms of the weather for Wimbledon 2017 -

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until Tuesday, and the umbrellas were out for Murray Mount as rain

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stopped play on the outer courts.

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At least Johanna Konta gave us something to smile about,

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but there was also plenty to smile about for gardeners

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and growers, some heavy rain moving its way across England and Wales.

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We could see as much as an inch of rain in many

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places before this system clears through,

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and that will be the first significant rainfall across

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much of eastern and south-east England so far this month.

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But it WILL slowly clear through

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and leave a legacy of cloud first thing in the morning.

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A bit more of a stiffer breeze along exposed east coasts,

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but the sunshine will break through as the day progresses.

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It'll be quite a pleasant day, and in sheltered western areas,

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the temperatures are going to respond,

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a degree or so up on what we've seen on Tuesday,

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with highs of 19 to 23 degrees, just that little bit fresher

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along the east coast, 15 to 18 with the breeze coming in off the sea.

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Now, as we move into Thursday, we'll see a ridge of high pressure just

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building and staying with us before this little weather front

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introduces more showers,

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and again we see this unsettled mobile westerly theme continuing.

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But Thursday will be a relatively dry day,

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with some sunny spells and just a few isolated showers cropping up.

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More significant showers by the end of the day into the far north-west.

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Here, highs of 16 or 17 degrees.

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Elsewhere, we'll see temperatures responding at 20 to 23.

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That weather front will enhance some showers as we move

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through Thursday into Friday.

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Nothing particularly significant with it.

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The winds will swing round to a fresher north-westerly feel

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and, generally speaking, we've got that mobile westerly flow, so

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the potential for a few more showers along exposed west-facing coasts.

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But, again, with a little more shelter we'll see

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highs of around 16 to 22 degrees in the south-east.

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Rain threatens from the west,

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this mobile westerly theme set to continue,

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and we'll see the isobars squeezing together, so there's some

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wetter and windier weather to come for the start of the weekend.

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But as that weather front drifts its way south and east,

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it weakens off substantially.

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There's a risk, though, of breezier conditions,

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more showers to come, potentially, on Saturday.

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But if the showers ease through and we keep some sunshine,

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the wind's coming from a south-westerly direction,

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so a degree or so warmer.

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That weather front still a little bit of a nuisance into Sunday.

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I just want to draw your attention to the high pressure

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building down into the south-west.

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So far this week, we've seen a pretty mobile westerly flow,

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so we keep the showers going potentially out to the west,

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but a good deal of dry, sunny weather, and with some sunshine

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we'll start to see some warmth building in the south-east,

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25 degrees.

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The jet stream has been sat pretty much across the UK and has delivered

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this westerly flow,

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but we'll see more of an amplified jet stream into next week.

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That's going to allow that high pressure to build

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that I pointed out and drive in some warmer air across the country,

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even starting to feel hot and humid again from the south.

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There's only one slight potential problem -

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and it is only a slight problem -

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we could just see a low pressure developing into the south-east,

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and that, as it bumps into the humidity, could trigger

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off some sharp, thundery downpours in the longer six-to-ten-day period.

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The best of the drier weather looks likely to be into the far north

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and west. Still a lot to play for.

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Don't make this the last forecast you're going to see.

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