Really timely article in Live Science on pyrocumulus clouds, which occur in the vicinity of large wildfires as is happening in Southern California at this time, and also in volcanoes all over the world. Always been fascinated by these, especially when develop into pyrocumulonimbus clouds and vivid lightning. Featured image is from the Thomas Fire in the Santa Barbara area of California.

Enjoy! 

https://www.livescience.com/61167-what-are-pyrocumulus-clouds.html