Not yet at least. Kek

The National Park Service confirmed a cloud atop Mount Rainier Wednesday morning led to Twitter users speculating it was "venting" or worse, erupting.

https://www.king5.com/mobile/article/news/local/mount-rainier-not-erupting-lenticular-cloud/281-478ea154-7084-4fdd-ac59-f5839b6649b1