Unusual Clouds

Posted by on Sunday, July 10, 2016
We've all heard of a couple of the main ten cloud types. There are Cirrus, Cirrostratus, Cirrocumulus, Altostratus, Altocumulus, Stratus, Stratocumulus, Nimbostratus, Cumulus, and Cumulonimbus clouds. But there are also some lesser known cloud types.

Nacreous Clouds: These are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 meters. They glow brightly with vivid iridescent colors.

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Asperatus Clouds: They appear dark and storm-like, they tend to dissipate without a storm forming. These may form near storm clouds.

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Kelvin-Helmholtz Wave Clouds: Cloud known to scientists as a Kelvin Helmholtz cloud. These clouds look like breaking ocean waves.

Mammatus Clouds: Mammatus are most often associated with the anvil cloud and also severe thunderstorms. They often extend from the base of a cumulonimbus, but may also be found under altocumulus, altostratus, stratocumulus, and cirrus clouds, as well as volcanic ash clouds. They appear as bubbles.

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Fallstreak Hole Clouds: Ice crystals form above the high-altitude cirro-cumulo-stratus clouds, then fall downward, punching a hole in the cloud cover.

The Team

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