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

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 ...

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

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

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

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, ...

A rare "roll cloud" phenomenon resembling a tsunami startled beachgoers in Portugal, triggering strong winds. What is this ...

A “tsunami roll” cloud phenomenon has appeared over the beaches of Portugal, mesmerizing and shocking beachgoers. This rare ...

Check out this incredible roll cloud spotted off the coast of Portugal on Sunday. Roll clouds are most common with ...