Lenticular Clouds: Formation, Global Reach, and the UFO Connection

To the point

Lenticular clouds are lens-shaped, stationary formations formed by air moving over mountains that continually re-form and can stack into layers, are often mistaken for UFOs, occur worldwide near tall peaks such as the Cascades near Mount Rainier, gained fame from early sightings like Kenneth Arnold's 1947 report, do not predict weather but can cause turbulence for pilots, and have been photographed by people including Christopher Balladarez, Rénald Fortier, Geoffrey Beckett, and Geng Yuhe.