UK weather forecast: Britons braced for longer hot spell from tropical Atlantic pressure

UK weather: Met Office forecast rain and cloudy conditions

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Britain basked in a mini heatwave last week as the mercury soared to highs of 30C in parts of the country. And the UK is expected to see some warm weather for the final week of September, according to BBC forecasters.

However conditions could be changeable as despite high pressure lingering in the sub-tropical Atlantic to the southwest, low pressure near Iceland is expected to move nearer to the UK.

Ridges of high pressure will bring dry and sunny breaks in between rain spells.

And temperatures are forecast to be above average.

The BBC’s outlook for September 20 to 26 says: “High pressure is most likely to build in East Europe and Scandinavia as well as linger in the sub-tropical Atlantic to our southwest.

“This will open the door for low pressure near Iceland, the aptly named ‘Icelandic Low’, to displace nearer to the UK.

“An unsettled and rather changeable pattern is expected to continue throughout the week, with weather fronts bringing spells of rain and cooler days while occasional ridges of high pressure mix things up with some dry, sunny breaks.”

Low pressure systems are forecast to slow down as they approach Europe due to high pressure to the east.

As low pressure systems slow, warmer southwest winds will bring some sub-tropical Atlantic air into the UK.

The BBC’s forecast says: “Temperatures will tend to fluctuate day-to-day but hover just above average.

“This is because low pressure systems will slow down as they approach Europe, thanks to high pressure to the east.

“As they slow, warmer southwest winds will feed some sub-tropical Atlantic air into the UK.

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“There will be cooler spells behind cold fronts as the North Atlantic air moves in from the northwest.”

A separate model would see sunny and warm weather with southerly winds bringing air from Spain and France.

However, the chances of this model are dropping and are around 25 percent.

The BBC’s outlook says: “The alternative scenario is for a strong high pressure system to build overhead, either extending into the UK from the east or building in from the southwest.

“This would be a dry, largely sunny, and warm pattern as southerly winds bring air from Spain and France.

“Support for this pattern is waning, but there is still perhaps a 25 percent chance.”

The UK roasted in end-of-summer heat last week, with the highest temperature recorded on Tuesday reaching 30.7C at Gogerddan, in Dyfed, Wales, according to the Met Office.

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