Europe is currently in the grip of its fifth major Heat Dome of the season, a powerful and persistent high-pressure ridge that is locking extreme temperatures over the continent. As mid-August begins, this atmospheric phenomenon is driving widespread afternoon highs past the 40 °C mark, with the most severe thermal anomalies affecting France, the UK, Italy, Central Europe, and the Balkan Peninsula. The primary engine behind this fifth thermal wave is a stubborn upper-level ridge that is acting like a lid on a pot, trapping warm air at all levels and causing surface temperatures in low-lying basins and plains to soar to between 40 °C and 43 °C. The dry continental winds are keeping humidity low, rapidly depleting soil moisture and exacerbating wildfire risks across southwestern and central Europe.
The health and infrastructure impacts of this heatwave are profound, particularly due to the lack of nocturnal relief. Overnight low temperatures are refusing to drop below 22 °C to 26 °C in major urban corridors, denying residents the vital cooling window needed to recover from the daytime heat. This phenomenon, known as „tropical nights,” compounds physiological stress for millions, skyrockets energy grid demand, and maintains extreme wildfire conditions. The Heat Index, which represents the perceived temperature when humidity is factored in, becomes critically important during such events. When air temperatures hover around 35 °C with high humidity, the body’s ability to cool itself is severely compromised, leading to a real feel temperature that can approach 50 °C, increasing the risk of heat exhaustion, heat stroke, and exacerbating pre-existing health conditions like heart and respiratory illnesses.
The synoptic setup shows this fifth and powerful upper-level ridge re-establishing over Western Europe mid-week and expanding into Central Europe by the weekend. The warmest air mass is trapped underneath the core of the heat dome, spreading across Portugal, Spain, France, the UK, and the Benelux through Friday. The most anomalous temperatures will be felt over France and England on Thursday, where the deep wave over the North Atlantic allows a strong warm plume to push far north. By Saturday, the heat dome elongates as it shifts over Central Europe, strengthening the heatwave for Germany, the Alpine region, Italy, and the northern Balkans, while also bringing higher temperatures into Denmark, southern Scandinavia, and the Baltic region.
Regional temperature forecasts reveal the intensity of this event. In Western Europe, England is expected to peak near 38-39 °C on Thursday, while France will see the highest temperatures of 42-43 °C on both Thursday and Friday. The Iberian Peninsula will experience 42-44 °C in southern Spain, with central Portugal reaching 37-40 °C. Central Europe, including Germany and the Benelux, will see temperatures near 40 °C on Friday and Saturday as the heat dome shifts eastward. Italy and the Balkan nations will also challenge the 40 °C mark over the weekend, particularly in the Po Valley, Tuscany, and the Pannonian plains. The strongest temperature anomalies are projected to gradually vanish from west to east late this weekend and into the following week, offering a potential pattern flip that may bring long-term relief.
Ez a cikk a Neural News AI (V1) verziójával készült.