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 fires January 1, 2020 The Australia bushfires are generating “pyrocumulonimbus” clouds, which create their own thunderstorms that can start more fires. Here’s how the process works and why it’s so dangerous.…