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.
Rare Weather Phenomenon Grips Beachgoers At Portugal Beach During Heatwave https://t.co/2yyth5i2st pic.twitter.com/icpppv0ufb
– The Independent (@independent) July 1, 2025
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.
Parecía un tsunami
Gigantesca nube en espiral se vió en tres ciudades Costeras de #Portugal.
Estas nubes se formido a la brisa marina que se desplaza por el cielo como una ola.
Es un fenómeno atmosférico poco común conocido como nube enrollada o “#volutus”.#Tsunami pic.twitter.com/3ycrnmtx3
– 𝙈𝙖𝙧𝙞𝙤 𝙈𝙤𝙧𝙖𝙮 (@mario_moray) JUNE 30, 2025
It is estimated that the phenomenon had length 150 kilometers, and extended from Figueira da Foz to Villa Do Conte.
It was cut to have Experienced This Rolling Cloud in the North of Portugal. Felt like a tsunami out of a movie! 😂
Apparently it was 150km long, Stretching from Figueira da foz all the way up to vila do conde, which is close to what I was. pic.twitter.com/bonr4knsje– Helder (@helderhp) JUNE 30, 2025
But – despite his frightening appearance – he actually hides no danger, according to experts.
Tsunami Cloud in Portugal 🌊☁️ pic.twitter.com/ltwsunzkuz
– Nature Is Amazing ☘️ (@amazlngnature) JUNE 30, 2025
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.
Source: Skai
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