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

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.

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

Cloud streets explained These cloud formations aren’t terribly mysterious, despite their nearly perfect orientation across the sky.

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 ...

Other formations known as lenticular clouds also took shape and sat in place over the valley, leaving what nearly resembles flying saucers hovering above the desert.

MACON, Ga. — Central Georgia saw several hours of showers and storms Thursday night and as the storms were moving out, a rare cloud formation was on full display for thousands. Several viewers ...

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

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 ...

People across Southern New England were treated to interesting cloud formations on Wednesday as clouds at various heights in the atmosphere formed at the same time. Most of the clouds at the lower ...