A wildfire can already devastate forests, homes and entire communities. But some of France’s biggest blazes are now becoming something even more dangerous: they are creating their own thunderstorms.

A rare wildfire spreading across France's Bordeaux region and has spread to Western Madrid is fire cloud that can generate its own thunderstorms.

Near Bordeaux, a wildfire grew so intense it spawned self-feeding firestorms, forcing 220,000 people from their homes.