A “roll cloud” spotted off the coast of Portugal looked like something out of a movie. Here’s the science behind it.

The dark, tsunami-like cloud formation billowed across parts of Portugal’s northern and central coasts, as the country set a ...

A rare and stunning roll cloud formation captivated beachgoers in Portugal, resembling a massive horizontal wave. The unusual atmospheric phenomenon, ...

A rare roll cloud surprised beachgoers in Portugal amidst a severe heatwave, appearing along the coast on Monday. This ...

It resembles a giant wave rolling across the sky. Read more at straitstimes.com. Read more at straitstimes.com.

People in Portugal witnessed one of the most beautiful natural phenomena– after ‘roll clouds’ took over the ocean, turning it ...

Beachgoers in Portugal scrambled for cover over the weekend as the sweltering heat gave birth to a rare “tsunami roll,” or ...

A dramatic video showing a "roll cloud" over a beach in Portugal is going viral on social media, leaving netizens mesmerised.

On Sunday, across some parts of the northern and central Coast of Portugal, a “roll cloud”, as it is commonly referred to, ...

A rare roll cloud was seen passing over several beaches in Portugal on Sunday, June 29. The phenomenon features a cloud that ...

The roll cloud appeared in the midst of an intense heatwave gripping mainland Portugal and much of Western Europe.