On Dec. 2, 2024, huge, towering waves appeared in the sky above Montreal, Que. The clouds, called Kelvin-Helmholtz clouds, form when a layer of faster-moving wind sits above a layer of slower-moving ...

A woman in Calgary, Alberta, Canada, saw a strange, wavy cloud in the sky on Feb. 22, 2025, and took to X, formerly known as Twitter, to crowdsource an answer. "Does anyone know what is happening here ...

Gravity wave clouds form in wave-like patterns in sky, oftentimes resembling ripples in a body of water from a rock being thrown. These types of clouds are created from air in the atmosphere coming ...

SOUTH BOSTON, Va. (WSET) — Many folks reached out to me and ABC13 about some impressive-looking clouds. Many across Southside Virginia and in Richmond witnessed these formations on Tuesday afternoon.

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Before, during and after strong thunderstorms, you often get a variety of interesting cloud types. Last week was no exception, and you all captured things perfectly. The shelf cloud isn't exactly rare ...

Iowans pointed their cameras and phones to the sky Friday morning as gravity wave clouds moved through the state. Chief Meteorologist Jason Sydejko explained the cool weather phenomenon."It looks like ...

This 2023 astronaut photo shows a pair of perfectly aligned "wave clouds" rippling above the Crozet Islands in the Southern Ocean. The unusual patterns are the result of changes in temperature caused ...

On June 24, 1947, pilot Kenneth Arnold reported seeing multiple mysterious, gleaming circular objects along the crest of the Cascade Mountains in Washington. It was one of the most famous UFO ...