Key facts
- A wildfire in France generated a pyrocumulonimbus cloud, a rare phenomenon.
- The fire-cloud produced lightning.
- This lightning ignited new fires.
- The phenomenon was observed near Bordeaux, marking the first recorded instance in France.
- Pyrocumulonimbus clouds can worsen wildfires by creating powerful winds and igniting new blazes.
France is experiencing an unprecedented fire season, with a wildfire near Bordeaux generating a rare pyrocumulonimbus cloud, or 'fire-cloud.' This phenomenon occurs when intense heat from a large wildfire drives smoke, ash, and water vapor high into the atmosphere, forming a cloud that can act like a chimney. These clouds can make wildfires more dangerous by producing powerful, erratic winds and generating lightning. The lightning from this specific fire-cloud sparked new blazes, complicating containment efforts and leading authorities to consider widening evacuation zones. Experts suggest Western Europe may see more such phenomena in the future, given the trend towards more extensive wilderness fires.