The four main types of clouds have been expanded into 10 classifications in the WMO's International Cloud Atlas. But there are many special clouds beyond these classifications.

Nacreous clouds, also known as mother-of-pearl or ice polar stratospheric clouds, are made of very cold ice. When the sun goes down they catch the light and reflect brilliant colors.

TOKYO, JAPAN - AUGUST 14: Shafts of sunlight beam down from behind clouds on August 14, 2019 in Tokyo, Japan. (Photo by Carl Court/Getty Images) One misconception is that there are only four types ...

Clouds were studied and named by Englishman Luke Howard in the late 1700s. There are four types of clouds: cumulus, stratus, cirrus, and nimbus.

Tuesday evening, if you happened to be looking up, you may have seen some rainbow-esqe clouds high in the sky.

Mid-level clouds, identified with the prefix “alto-” can be found at elevations between 6,500- and 20,000-feet. The two main types are altostratus and altocumulus.

Different types of clouds have different effects on a person’s viewing experience. When the moon completely covers the sun April 8, it will be the first total eclipse in North Texas since 1878.