Europe’s heat dome furnace returns: Brutal 40+ °C record heatwave builds into August

As July transitions into August, the European continent is bracing for yet another intense heatwave and potentially historic escalation in the excessive heat. Driven by a textbook atmospheric Omega block, a monstrous, long-lasting fourth heatwave of the season will surge northward from North Africa, with a relentless Heat Dome locking over Western and Central Europe and the Mediterranean.

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Due to prolonged exposure to high temperatures, construction workers, farmers, and other long-hour outdoor workers are at increased risk of heat-related illnesses. People living in poverty are also more susceptible to the fatalities of heat domes, as their houses are often built with heat-trapping surfaces such as concrete and asbestos.

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The end of July is shaping up to deliver yet another powerful upper-level ridge, with a major Heat Dome across the heart of Europe. It is forecast to engulf most of the continent with excessive heat from Iberia to France, Germany, and the Baltic region, as well as over Central Europe and the Mediterranean, where the peak summer season has tens of millions of residents on vacation.

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This powerful blocking High will remain parked over Europe for nearly two weeks, resulting in locally historic heatwave with temperatures above 40 °C in many countries. The only near-normal temperatures will be in NW Europe with maritime air masses in place over northern Scandinavia, the northern British Isles, and the far northern Atlantic.

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This time, the position of the Heat Dome over Europe will only bring a short-term heatwave into the British Isles. Tuesday and Wednesday are forecast to be the hottest days, and later this week temperatures will be lower under the influence of a maritime air mass from the west.

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