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.

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

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.

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.

Cirrocumulus clouds are high-altitude formations typically found at elevations of 18,000 to 20,000 feet. Composed of ice crystals, they often appear as small, ...

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 ...