Fire clouds worsen European wildfires, experts warn

Extreme wildfires in Europe are generating pyrocumulonimbus, or 'fire clouds,' dangerous thunderstorms that create their own weather, including lightning and strong winds that accelerate fire spread. Experts say the phenomenon, previously observed in Australia and California, may be occurring for the first time in France. Climate change is increasing the likelihood of such events, with another heatwave forecast to hit France this week.