
This unrelenting heat is fueled by an expansive heat dome that originated over the North African deserts, where historic highs were also recorded in Morocco. That same air mass is now sweeping across the Mediterranean, creating a corridor of oppressive warmth that stretches from coastal lowlands to alpine peaks.
In the French Alps, where June typically brings melting snow and cool breezes, the temperature spike has rewritten the record books. The freezing line, the altitude where the temperature falls to 32 °F (0 °C), soared to an unprecedented 16,850 feet (5,135 meters) above sea level — a height never before recorded in June.
The ongoing heat wave caps what is now expected to be one of the hottest Junes ever recorded in Europe, setting the stage for a blistering start to July.

