A resident of Fujisawa, a city in Kanagawa Prefecture, Japan, published a few pictures of a spherical cloud that looks absolutely mysterious.
The user revealed that she saw this ball-shaped cloud when she looked out of the car window. She gazed at the cloud for a while, and only then rushed to take the photo, she wrote on Twitter. The Fujisawa resident, however, claims the cloud was already losing its shape by that time. Its outline was more blurred than when she saw it with her eyes.
Some experts pointed out that the woman lucky enough to have witnessed a rare climatic phenomenon, which spins in the clouds in "rolls." Such clouds appear on windy days, when the cold and denser air mixes with the rising warm and light air, creating a rotational movement.