FLASH · 63w โก๏ธ๐ต๐น๐ WATCH - A rare 150 km tsunami-like roller cloud has been observed off the coast of Portugal. It is caused by a sudden change in temperatures and winds. https://blossom.primal.net/44... FLASH @flash 1751359253 ๐๏ธ Second source https://www.portugalpulse.com/roll-cloud-what-is-this-rare-phenomenon-that-passed-through-portugal/