Altostratus

English: Altostratus

Italiano: Altostrato

日本語: 高層雲

한국어: 고층운

Varieties

Opacus

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  Altostratus opacus with some Cumulus toward the horizon
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  Altostratus opacus

Translucidus

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  Diffuse Sun through Altostratus translucidus
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  Altostratus translucidus
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  Altostratus translucidus

Undulatus

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  Altostratus opacus undulatus
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  Sun shining through Altostratus undulatus

Supplementary features

Mamma

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  Altostratus opacus mamma
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  Altostratus translucidus mamma
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  Small region of Altostratus translucidus mamma
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  Altostratus mamma
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  Small region of Altostratus mamma

Accessory clouds

Pannus

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  Altostratus opacus undulatus with some Pannus in the lower left

Altostratus combined with other clouds

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  Altostratus translucidus and Cumulus congestus