20/03/2018 Weather for the Week Ahead


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20/03/2018

Detailed weather forecast.


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Hello. On Monday we saw sunshine overhead

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thawing quite a bit of the snow that fell over the weekend.

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Tuesday is the start of astronomical spring

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and for the rest of the week

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the weather will actually

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start to feel a bit more like it.

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It's turning milder across most parts of the country.

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A lot of the dry weather, but later on, rain in the west.

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Dry at the moment because high pressure is in charge,

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but notice how it shifts its position now into Tuesday.

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So instead of easterly winds, we're getting winds

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from a northerly direction across England and Wales.

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Quite a bit of cloud to begin with, but that will break up.

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Some sunny spells coming through.

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Frosty to start with across Scotland and Northern Ireland,

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but some of the sunniest weather throughout.

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We'll see more cloud pushing into the Highlands

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and Islands during the day and that's all linked

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into the change of wind direction as our high pressure gradually shifts.

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Temperatures up on what we've seen in recent days.

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That shift in wind direction continues into Tuesday evening

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and it's all down to what's happening in the Atlantic.

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The jet stream's strengthening in the western Atlantic

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and that's starting to shove things a bit further eastwards.

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And as you can see from the yellow colours,

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getting milder air closer and closer towards us.

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By Wednesday, with high pressure to the south of us,

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we're now dragging the air off the Atlantic.

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But with it will come some Atlantic weather fronts.

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They'll affect mainly Northern Ireland and parts of Scotland.

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Nothing desperately heavy, but patchy rain and drizzle.

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Sunny but frosty start across England and Wales.

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Temperatures of -5 or -6 to begin with, lifting up to 7 to 9 degrees

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with sunny spells and increasing cloud during the day.

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But just note across Scotland and Northern Ireland,

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10, 11, maybe 12 degrees across Aberdeenshire.

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That run of Atlantic winds continues into Thursday

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with high pressure to the south, low pressure to the north.

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A ridge of high pressure for Thursday,

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so for many it will be a fine day.

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Could be a bit frosty across eastern areas to begin with,

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but not quite as cold as we start the week.

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Cloud increasing through the day, most places staying dry,

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but Ireland and west Scotland later on,

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rain will gradually work its way in and the breeze picks up.

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But with some sunshine, Aberdeenshire, Angus,

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down through eastern England, 12 or 13 Celsius likely.

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As we go through into the end of the week, low pressure becomes dominant.

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We'll see weak weather fronts spread across England and Wales.

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They'll not amount to much across the south.

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Some heavier bursts further north.

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Then we start to see showers work their way in.

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Some accompanied by rumbles of thunder, hail too.

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But with sunshine in between, starting to feel

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the effect of that strengthening March sunshine overhead.

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Double figure temperatures mostly around where

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they should be for the time of year.

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For the weekend, that low pressure still with us.

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It migrates a bit further north-eastwards

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and allows the winds to go more north-westerly.

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So there's a chance, as weather fronts

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push across Scotland on Saturday,

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some snow over the hills for the time being.

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But a lot of dry and bright weather.

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To take us into the weekend showers developing across the west.

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Some heavy with hail and thunder

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and maybe a bit of snow,

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but that's limited to the tops of the hills.

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Most places seeing double figure temperatures to take us

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into the weekend. That low pressure still close by as we go into Sunday.

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So sunshine and showers once again.

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A brief ridge of high pressure as we go into the start of next week.

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But next week looks like we'll see the split.

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Low pressure to the north, high pressure to the south,

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so we're still going to dominate with Atlantic winds coming in.

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Always looks like, from the computer models,

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that low pressure will be more dominant than the high.

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So it's always going to be a case of rain more likely at times

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with windy conditions.

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They'll be some sunny days as the ridge of high pressure pushes in.

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Maybe some frosty nights.

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Mild overall, but there could be hints

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as we approach Easter of things turning colder.

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We'll keep you updated.

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