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Explained in plain English

What is a heat dome?

A 'heat dome' is a weather phenomenon where a high-pressure system traps warm air over a region, much like a lid on a pot. This particular one is coming from North Africa, bringing the UK its final burst of summer warmth. It can lead to prolonged periods of high temperatures and clear skies, as mentioned for London and the south east.

Stories that explain this

UK to see 24C highs in final summer warmth next week Heat dome brings high 30s temperatures to southern Europe in September

Related explainers

Why is Europe so hot? What are the health risks? What are the impacts? Who are the Met Office? What is 'summer warmth'? What causes heat illness? Can cities adapt to heat? How do countries track heat deaths?

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