Pyrocumulonimbus is a type of cloud that occasionally forms during a large fire. They are related to their cousin, ...

The fire burning in north-east Victoria near Walwa was so fierce it generated its own weather this afternoon, including a substantial pyrocumulonimbus cloud with lightning and thunder.

Bushfires are strongly driven by weather: hot, dry and windy conditions can combine to create the perfect environment for flames to spread across the landscape. But sometimes the relationship flips: ...