The rare type of cloud, whose name is Latin for "roughness," was first observed in 2006 by an amateur cloudspotter in Iowa.

Weather watchers were treated to an exceptionally rare display on Friday evening as rare cloud formations filled Vancouver ...

Roll clouds are not and do not produce tornadoes. These are considered arcus clouds, like a shelf cloud. Shelf clouds are ...

A rare cloud formation called the Taieri Pet was seen over New Zealand. NASA's satellite captured an image of this cloud. The ...

“We usually see them around the southern plains, but they’re super rare.” Formerly known ... when another distinctive ...

On the rocky slopes high above lush pine forests and mountain lakes, a group of researchers have just finished setting up ...

opens new tab describes Undulatus Asperatus clouds as a rare cloud formation that appears dark and storm-like but tends to dissipate without a storm forming and that the name translates ...

Oct 25, 2020 Oct 25, 2020 Updated Oct 28, 2020 0 Axel Hildebrandt took this picture in Upper Saucon Township, Lehigh County. Axel Hildebrandt took this picture in Upper Saucon Township, Lehigh ...

Stunned sky-watchers in the US state of Wyoming have snapped photos of a rare cloud formation crashing across the horizon like ocean surf. "This was special and I immediately knew I needed to ...

Pollution from industrial hotspots can trigger ice formation in supercooled clouds, altering their reflective properties and increasing regional snowfall, according to a new study. The findings shed ...

This is the spectacular moment a vibrant pink sunset illuminated the skies over the Philippines amid successive typhoons. Locals were in awe at the breathtakingly rare cloud formation above ...