Stratocumulus lenticularis

Stratocumulus Lenticularis have lens or almond shapes, usually quite elongated, and whose contours are usually well defined; no iridescence or corona. These clouds often appear in the formation of clouds of orographic origin (near mountains), but they can also be seen in regions without marked orography, although less frequently. Usually these "lenses" are almost stationary and indicate approaching thunderstorms.