Sky-watchers were treated to a unique sight on Sunday evening as rare clouds developed west of Calgary, Alberta. DON'T MISS: Weirdest cloud in Canadian history? Here’s the explanation Kelvin-Helmholtz ...

High above the familiar cotton wool of weather systems, a stranger kind of cloud is quietly rewriting what we think we know ...

A viral video making the rounds on social media shows beachgoers in Portugal encountering an enormous and unnervingly tsunami-like cloud rolling in. Footage shows an enormous, foreboding wall of dark ...

A rare phenomenon called a "roll cloud" covered Portugal beaches on Sunday, June 29 The tsunami-like formation shocked beachgoers, many of whom filmed the moment Scientists say the cloud was caused by ...

COLUMBIA, S.C. — Early Wednesday morning, parts of the Columbia area saw rain to start the day with scattered showers and storms. This made for a rainy morning commute for many individuals. As the ...

A picture of a cloud formation in Virginia that resembles rolling waves is going viral. Weather experts say this type of cloud formation, which was spotted in over Smith Mountain Lake near Roanoke, is ...

"About 45 minutes before sunrise this cold morning after a storm front moved through the area, these clouds appeared which looked very similar to NLCs," Griffith told Spaceweather.com. "I've seen NLCs ...

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 ...

A rare anvil or hat-shaped cloud appeared near Mount Fuji after a strong typhoon swept through Japan. The cloud, called "tsurushi-gumo", or hanging cloud, was seen on Wednesday morning. The phenomenon ...

MISSOULA, Mont. — Early Tuesday morning, a delicate, wispy cloud type rarely seen formed over western Montana, lighting up the pre-dawn sky. They were visible looking north from the NBC Montana ...

Early Tuesday morning, meteorologist Elizabeth Gardner showed a camera of Franklinton. It was before sunrise that we noticed an odd-looking cloud on the right side of the frame. Upon investigation, it ...