This is a photo from two weeks ago when there was an unusual amount of lenticular clouds above and around Mt Shasta in Northern California, USA. Unlike typical days when one cloud forms and remains stationary for a relatively long period of time, this day multiple clouds kept materializing, stay for a few minutes and de-materialize again.

https://steemit.com/mypictureday/@edward.maesen/lenticular-clouds-around-mt-shasta-mypictureday-submission
(my original post contains more photos from that same day as I was driving around the area, each with different cloud formations)