Known as the UFO cloud, its formal name is “Altocumulus Lenticularis Clouds” and they are named for their smooth, round, lens-like shape, commonly known as a lenticular cloud (lenticular means lens or lentil-like). These alien clouds form when winds blow across a mountain range, to form air waves on the lee side. This process, knownContinue reading “Clouds from the Twilight Zone”