Spissatus Cloud Species:Packed Tightly, Dense

Get a full description of cirrus spissatus clouds, including pictures and images of their various characteristics, how to identify them, and more.

Cirrus spissatus (Ci spi)
Cirrus spissatus (Ci spi)

Identifying the spissatuscloud species

A thicker and less-wispy species of the high-altitude cirrus cloud

Translated from latin meaning thick, the ‘spissatus’ cloud species is found only in the cirrus cloud type. No other cloud type besides a cirrus cloud can be classified as spissatus. A cirrus spissatus cloud is a thick cirrus cloud.

This species of cirrus cloud is fairly recognizable and distinct. Often, there are other species of cirrus clouds within close proximation. The proper cloud classification abbreviation for this cloud is ‘Ci spi’.

Cirrus spissatus clouds can sometimes get thick enough to almost block out the sun, nearly resembling an altostratus cloud. While these clouds can be formed by a conglomerate of cirrus clouds at high altitudes, they can also form from the death of a thunderstorm that once had a fibrous top. When a cumulonimbus cloud dissipates, usually the top of the cloud is the last thing to go, leaving the remains of an anvil cloud (incus cloud feature).

This type of cirrus spissatus cloud can be classified as cirrus spissatus cumulonimbogenitus, meaning the cirrus spissatus cloud created from a cumulonimbus cloud. Because these clouds can form from dying thunderstorms, cirrus spissatus clouds is your best chance to catch mammatus clouds (mamma cloud feature) in the cirrus cloud type. As a cloudspotter, be on the lookout for cirrus spissatus cloud formations when you see either dying thunderstorms or on days where the sky is overly filled with cirrus clouds.

Spissatus and its cloud type

Spissatus is used with the cloud type shown below. The main type identifies the broader cloud form, while this term adds a more precise classification.

Compare spissatus with related cloud species

Use the defining shape, arrangement, associated cloud type, and full sky context before selecting the most appropriate term.

Spissatus vs. fibratus

Both are cirrus species. Spissatus is unusually dense and thick enough to look grayish in places, while fibratus remains thinner and more distinctly filamented.

Illustration of spissatus clouds
Spissatus
Illustration of fibratus clouds
Fibratus
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