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

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

A rare roll cloud appeared over Portugal’s coast, surprising beachgoers as strong winds hit during an ongoing extreme ...

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

A dramatic “roll cloud“ spotted up and down the country’s central coast formed during a weeklong heat wave.

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

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

Mediterranean countries have been sweltering in a heatwave for several days, prompting health warnings and alerts about ...

Beachgoers in Portugal were left terrified after spotting what appeared to a tsunami heading their way this week. Thankfully, ...

Cloud Tsunami A viral video making its rounds on social media shows geachgoers in Portugal encountering an enormous and ...

A rare 'tsunami roll' appeared in the sky off the coast of northern Portugal on Sunday, 29 June, causing beachgoers to flee ...

Tsunami-like cloud seen over beaches in Portugal freaked out people. The hot weather triggered the formation of the roll ...