The predominant westerly air flow shall continue into the first half of next week for Western Europe but it should turn noticeably colder as arctic air returns to the United States, feeding the trans-Atlantic flow.

We have a long wave (full latitude) trough linking North America with Europe at the moment and with the UK above or on the colder side of the jet stream, we stay a little below average this weekend into particularly early next week. The cold that’s now diving south into the US, will get transferred across the Atlantic and that means our unsettled weather turns colder Monday-Tuesday.

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Towards the second half of next week, some change takes place according to the GFS as a major arctic trough drops into the US and as a result, ridging develops north of the UK with a bridge between northern Greenland and Scandinavia where the cold is really getting it’s act together.

As heights build north of the UK, low pressure that lingers this weekend into early next week get’s forced south and fills as it does so, this appears to set up a northeast flow and because it’s turned much colder over Scandinavia, we may find ourselves rather chilly Thursday through Saturday next week.

Below is the GFS surface charts now through next week.

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192 hrs

Below is the GFS 850 temps charts and notice with the UK staying generally north of the predominantly west-east jet, as the US turns cold again, that jet then drives an increasingly colder ‘maritime-polar’ flow across the Atlantic and into the UK. Our source region is from the USA this weekend through about Tuesday, then our source turns to Scandinavia.

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192 hrs

SEE VIDEO FOR MORE.

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