MOLINE, Ill — Perhaps one of the strangest appearing things in the sky you'll ever witness, this unique cloud formation comes in different sizes and shapes. It is, however, usually caused by the ...

People in the towns of Middlemarch and Hyde report often seeing the strange cloud formation. Scientists from Nasa were able to capture the spectacle last month in satellite imagery.

The strange spectacle is formed when "shear winds" blowing past each other roll a cloud into a log of sushi, or a ghostly passenger train, maybe some kind of tunnel through the fourth dimension.

Asperitas clouds are a distinctive, but relatively rare cloud formation that takes the appearance of rippling waves.

Did you see something that looked like bubble clouds with Monday's storms? These unusual formations are known as mammatus clouds.

If you looked up at the Wichita sky Tuesday night around sunset, dramatic cloud formations probably caught your eye. For those who missed the evening cloud cover, chances are good you can catch a ...

Strange cloud formation April 29 stretched from Gulf Shores to Butler County Published: May. 18, 2009, 2:45 p.m.

Monday brought strange skies to the Coachella Valley, with unusual clouds — some evoking UFOs or otherworldly scenes from the film “Interstellar” — hovering over the San Jacinto mountains ...

Strange, sagging clouds were spotted over Houston as a severe thunderstorm exited the area on Tuesday.

Sightings of hole-punch clouds inundated the Facebook page for the National Weather Service in Peachtree City, Georgia, on Monday with more than a dozen photos sent in from across northern Georgia ...