Lenticular cloud ufo

Lenticular clouds look like flying saucers and intrigue scientists and weather watchers.

About this subject

Lenticular clouds, technically known as Altocumulus lenticularis, are atmospheric formations that often evoke comparisons to flying saucers. They develop at altitudes between 6,500 and 39,000 feet when strong, moist winds encounter a mountain barrier. The air is forced upward, cools, and moisture condenses into a stationary, lens- or cigar-shaped cloud. Because they remain immobile in the sky despite the wind, their alien appearance is accentuated. They are most common near mountain ranges, such as the Andes, Alps, and Brazil's Serra do Mar. In Brazil, they can be seen in southeastern highlands, especially in winter when air is more stable. In popular culture, these clouds are linked to UFO reports. A classic case is the 1997 Phoenix Lights incident, where thousands saw V-shaped lights later attributed to lenticular clouds lit by searchlights. Technically, lenticulars are important for aviation: they indicate mountain waves, which can cause severe turbulence. Hang-glider pilots also seek them for long-distance soaring, as updrafts are strong. Despite their solid appearance, they consist of supercooled water droplets or ice crystals and dissipate quickly when airflow changes.

Frequently Asked Questions

What are lenticular clouds?

They are lens- or disc-shaped clouds that form when moist winds hit mountains, forcing air upward to condense. They remain stationary even in wind and are often mistaken for UFOs.

Why are lenticular clouds mistaken for UFOs?

Due to their aerodynamic shape, metallic appearance, and ability to stay still. Sunlight can make them glow, reinforcing the illusion of extraterrestrial craft.

Where are lenticular clouds most commonly seen?

Near major mountain ranges: the Himalayas, Alps, Andes, and Brazil's Serra do Mar. They also occur on volcanic islands like Hawaii and Mount Fuji in Japan.