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 ...

On Sunday, the beachgoers in Portugal experienced a spectacular and unusual weather event as a huge roll cloud rolled in from the Atlantic Ocean, leaving scores of bathers in awe. The unusual ...

Beachgoers in Portugal scrambled for cover over the weekend as the sweltering heat gave birth to a rare “tsunami roll,” an ominous wave of dark clouds over the water. Viral video of Sunday’s ...

Images shared across social media showed a huge horizontal wall stretching from the horizon towards the shore, accompanied by a violent gust of wind when it reached land. 'Felt like a tsunami out of a ...

A rare weather sighting occurred in Portugal as tourists and locals witnessed a one-of-a-kind cloud in the sky in recent days. (See the video at the top of this article.) A "tsunami" roll, also known ...

Beachgoers captured photos and video of the shocking weather phenomenon on Sunday, June 29 Rachel McRady is a Digital News Editor at PEOPLE. She has been an entertainment journalist for more than a ...

GRAND RAPIDS, Mich. (WOOD) — Humidity hovering over the surface of Lake Michigan helped to form a spectacularly skinny roll cloud Monday afternoon over Ottawa County. Roll clouds are rare, usually ...