The world's cloud authority, having not classified a new cloud in three decades, arose Thursday to name about a dozen new types, including a rolling, slalom-like form known to blanket the Iowa sky.

When's the last time you went cloud-gazing? Sinking, rising, spreading, changing—there’s always something exciting happening to the clouds overhead. The big puffy ones—what are they called? And the ...

A photo taken nearly 11 years ago in Cedar Rapids has led to the worldwide recognition of a previously unclassified type of cloud. 'I feel very privileged to be a part of all that,” said Waterloo ...

There are other cloud classification systems too, such as the National Weather Service's cloud chart, which classifies clouds ...

All photos are available on the WMO International Cloud Atlas website. Some of the newest clouds featured were the subject of concerted, multi-year lobbying campaigns, according to Mashable. The four ...

ALBUQUERQUE, N.M. (KRQE) – Viewers send in photos showing the lenticular cloud formations in Albuquerque sky. According to National Weather Service, lenticular clouds are lens-shaped clouds that form ...

Strange "rainbow clouds" that look like a colorful portal to another dimension have recently appeared across northern skies. These nacreous clouds, also known as polar stratospheric clouds, are one of ...