News Channel 11 viewers captured stunning, rare clouds in the Tri-Cities Sunday. The formations are called “undulatus ...

NewsNation affiliate WJHL viewers captured stunning, rare clouds in the Tri-Cities area of Tennessee on Sunday.

Weather watchers were treated to a unique display on Friday evening as rare cloud formations filled Vancouver skies. The weather phenomenon cast sheets of grey-tinged cloud, knitted together to ...

Residents of the Indonesian island of Tidore witnessed a rare natural spectacle at the beginning of December. A cloud shining ...

Residents awoke to a shock this morning as a rare lenticular cloud that looked like a UFO was above their homes near Saddleworth ...

A MYSTERIOUS cloud shaped just like an alien spaceship has been spotted hovering over the UK. The strange sighting has been ...

Named after physicists Lord Kelvin and Hermann von Helmholtz, these fairly rare clouds can be hard to spot as they can only form on very windy days with exceptional levels of vertical shear.

Undulatus Asperatus is classified among the rarest clouds. Other rare cloud formations include octilucent, Polar ...

People across the north-west of England woke up to unusual cloud formations against vividly coloured skies. The Met Office ...

Essentially, it’s the same process that results in waves forming over open bodies of water under high winds—just in the sky! Named after physicists Lord Kelvin and Hermann von Helmholtz, these fairly ...