Cirrocumulus lenticuraris

Cirrocumulus Lenticularis have the shape of lenses or almonds, usually quite elongated and whose contours are usually well defined; sometimes have iridescence and corona. These clouds often appear in the formation of orographic clouds (near mountains), but they can also be seen in regions without sharp orography. Typically, these "lenses" are almost stationary and indicate approaching thunderstorms, especially if accompanied by iridescence.