In the last few hours, X has been filled with videos and photos of an impressive – as well as scary to see – meteorological phenomenon in Portugal, due to the heatwave affecting the country.

A huge “wisdom tsunami” appeared yesterday afternoon in the sky of three coastal cities in central and western Portugal, making social media users talk about apocalypse images.

This huge, ‘Rolling’ cloud It looked like a giant wave pouring into the sky, awe -inspiring to those who saw it on the horizon approaching.

It is estimated that the phenomenon had length 150 kilometers, and extended from Figueira da Foz to Villa Do Conte.

But – despite his frightening appearance – he actually hides no danger, according to experts.

The dense tsunami cloud occurs when warm and cold gaseous masses collide.

The Mário Marques climate expert said this is not the first time this phenomenon has appeared in Portugal.

However, it is the “cloud tsunami” more common in Australia, where cold air from Tasmania collides with hot air from the mainland.