A new and ominous word has entered the vocabulary of firefighters struggling to cope with the vast wildfire sweeping through south-west France. A pyrocumulonimbus is a fire-generated thunderstorm that can whip up winds in unpredictable ways, making the containment of a blaze and assessment of its likely course far more difficult. A known phenomenon in North America and Australia, firefighters believe France is suffering its first in the Bordeaux region, as the country endures the consequences of the third major heatwave of the summer and prepares for a fourth.
The dire statistics of the ongoing fires in France and Spain tell a story of deepening devastation and human misery. A far greater expanse of French land has already been burnt this year, compared with the 30,000 hectares during the whole of 2025, while 220,000 people have been evacuated from their homes in the Gironde. In Spain, the environment ministry has calculated that over 170,000 hectares have been affected, compared with 29,000 last year. Over 100,000 people have been forced to flee.
