Some Coloradans have noticed rainbow clouds over the past few days? This is actually a rare phenomenon called "cloud ...

The highest clouds are the wispiest: cirrus, cirrocumulus, and cirrostratus. They generally form above 20,000 feet, and typically indicate a coming change in the winds or weather.

These root names can be combined to describe more complex cloud types—like cirrocumulus. The prefix “alto” (meaning “high”) helps distinguish mid-level clouds from their lower-level ...

This optical phenomenon is known as cloud iridescence. To form this feature, we first need a thin layer of high to mid-level clouds, such as cirrocumulus clouds like we see in the photo above.

A rainbow cloud can occur because of something called cloud iridescence. It usually happens in altocumulus, cirrocumulus, lenticular and cirrus clouds.

Fallstreak holes, also known as “hole punch clouds,” were spotted in several parts of South Mississippi today.

This cloud formation is known formally as a "fallstreak hole", or more casually a "hole punch cloud". It's a large circular or elliptical gap that appears in cirrocumulus or altocumulus clouds.

The formation is called a fallstreak hole, or a hole punch cloud. It's a circular or elliptical gap that can appear in a deck of cirrocumulus or altocumulus clouds.

BILOXI, Miss. (WLOX) — Fallstreak holes, also known as “hole punch clouds,” were spotted in several parts of South Mississippi. Fallstreak holes are circular or elliptical holes in ...