A mysterious glowing cloud that lit up central Vietnam's skies on Tuesday was likely caused by a Chinese rocket launch, experts say.

Hadfield tweeted an image of an unusually shaped cloud with a question: "We all see faces & familiar shapes in clouds, even astronauts looking from above. Do you see what I see?" The responses ...

Hunter said wave-shaped clouds were spotted rolling over Smith Mountain near Roanoke. "Very cool clouds rolling over Smith Mountain this evening," Hunter said. "They are called Tsunami clouds. I sent ...

Australia's Volcanic Ash Advisory Center (VAAC) Darwin issued a red aviation warning about the volcanic ash plume, saying it rose to an estimated 19.2km altitude and is moving at 30 knots in a ...

Known as shelf clouds or arcus clouds, these clouds are distinctively characterized by their long, horizontal structure and wedge-shaped appearance. Our 11Alive StormTrackers captured some ...

PARRISH, Fla. — This isn't something you see every day — a long, continuous, low-hanging cloud looming over a neighborhood in Parrish. 10 Tampa Bay viewer Alan Weber sent these in Friday ...