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Heat dome

Heat dome

Topic Science

A heat dome is a weather phenomenon where hot air is trapped by a high-pressure system, causing extreme heat.

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Topic Overview

A heat dome is a meteorological phenomenon characterized by a persistent area of high pressure that traps warm air over a region. This phenomenon is currently newsworthy as it has settled over Western Europe, including the UK, France, Italy, and Spain. The trapped warm air, originating from northern Africa, is causing temperatures to soar to record highs for May, well above average seasonal temperatures. Forecasters are warning of a prolonged period of extreme heat throughout the week. This event is significant because it brings unseasonably high temperatures to the region, impacting daily life and potentially posing health risks. The current relevance lies in the immediate threat of extreme heat and the unusual timing of such intense warmth, typically associated with mid-summer rather than late spring.
Last updated: June 21, 2026