Comment by divbzero

Pyrocumulonimbus [1] appears to be the most extreme version of pyrocumulus [2] which, coincidentally, was observed halfway around the world in Washington State this week [3].

[1]: https://en.wikipedia.org/wiki/Cumulonimbus_flammagenitus

[2]: https://en.wikipedia.org/wiki/Flammagenitus_cloud

[3]: https://www.seattletimes.com/seattle-news/climate-lab/little...