A high-pressure heat dome is trapping hot air over western Europe, creating a record-breaking heatwave during the end of May 2024 [1].
This weather pattern is significant because it pushes temperatures well above seasonal norms for the region, threatening public health and challenging long-standing climate records across the continent.
The system is currently affecting residents across western Europe, including the U.S. and the United Kingdom [1]. Meteorologists said the persistent high-pressure system acts as a dome, trapping warm air and preventing cooler air from circulating into the region [2].
In the United Kingdom, the impact is particularly acute in the southeast of England. Forecasts indicate temperatures in that region are expected to reach approximately 35 °C [2]. This surge puts the region in a position to surpass the previous May record of 32.8 °C, which was set in 1944 [1].
The heat extends further south into mainland Europe. Major cities including Paris, Rome, and Athens are expected to see temperatures approach 40 °C [2]. These extreme temperatures are a direct result of the heat dome's ability to compress and warm the air it holds in place.
Such systems often lead to prolonged periods of heat because the high pressure prevents the movement of weather fronts that would typically bring relief. The current situation in western Europe is creating a concentrated pocket of extreme heat across several national borders [3].
“A high-pressure heat dome is trapping hot air over western Europe”
The occurrence of a heat dome in late May suggests an increasingly volatile spring transition in Europe. When temperatures approach 40 °C before the traditional summer peak, it places immediate stress on urban infrastructure and public health systems that are not yet fully prepared for mid-summer extremes.
