The bushfires in Australia are so big they're generating their own weather — 'pyrocumulonimbus' thunderstorms that can start more fires

The "front" between the calm air outside the fire zone and the storm cloud is so sharp that it can generate lightning — and that can start new fires.

The bushfires in Australia are so big they're generating their own weather — 'pyrocumulonimbus' thunderstorms that can start more fires

The bushfires in Australia are so big they're generating their own weather — 'pyrocumulonimbus' thunderstorms that can start more firesThe "front" between the calm air outside the fire zone and the storm cloud is so sharp that it can generate lightning — and that can start new fires.