For Altostratus we have terms and definitions in 3 topics. The topics are Climatology, Oceanography and Weather.

Altostratus (Climatology)

A mid-level cloud which occurs as a sheet or layer with a striated, fibrous, or uniform appearance and is gray or bluish (never white)

Altostratus (Oceanography)

A type of cloud found between 3 and 6 kilometres above the Earth. They look like a thick grey or bluish veil over the sky through which the sun or moon can only be seen faintly.

Altostratus (Weather)

This middle cloud genus is composed of water droplets, and sometimes ice crystals, In the mid-latitudes, cloud bases are generally found between 15,000 and 20,000 feet. White to gray in color, it can create a fibrous veil or sheet, sometimes obscuring the sun or moon. It is a good indicator of precipitation, as it often precedes a storm system. Virga often falls from these clouds.

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