Pyrocumulus Clouds
Our previous list included mushroom clouds which are generated through an atomic blast, but they are, in fact, a type of pyrocumulus cloud (fire cloud) so it seemed better to include the whole classification here. Pyrocumulus clouds are, as you might expect, created by intense heating of the air from the surface of the earth. This can either be through a bomb blast or through wildfires. They often have a grey tinge because of smoke and ash involved in the source.
Linkback:
https://tubagbohol.mikeligalig.com/index.php?topic=59721.0