Altocumulus floccus (Ac flo)
Learn to identify a cloud that holds the classification of Altocumulus floccus (Ac flo) in this week's cloud classification lesson.
Read and identify →Cloud Classification Lessons
Practice your cloud classification skills with a dozen of step-by-step lessons that walk you through how you’d go about properly identifying a cloud.
Altocumulus lenticularis duplicatus (Ac len du)
Learn to identify a cloud that holds the classification of Altocumulus lenticularis (Ac len) in this week's cloud classification lesson.
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Stratus nebulosus translucidus (St neb tr)
Learn to identify a cloud that holds the classification of Stratus nebulosus (St neb) in this week's cloud classification lesson.
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Cumulus congestus (Cu con)
Learn to identify a cloud that holds the classification of Cumulus congestus (Cu con) in this week's cloud classification lesson.
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Cirrostratus fibratus (Cs fib)
Learn to identify a cloud that holds the classification of Cirrostratus fibratus (Cs fib) in this week's cloud classification lesson.
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Stratus opacus undulatus (St op un)
Learn to identify a cloud that holds the classification of Stratus undulatus (St un) in this week's cloud classification lesson.
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Stratocumulus floccus (Sc flo)
Learn to identify a cloud that holds the classification of Stratocumulus floccus (Sc flo) in this week's cloud classification lesson.
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Cumulonimbus arcus praecipitatio pannus (Cb arc pra pan)
Learn how to identify cumulonimbus arcus with praecipitatio and pannus in this step-by-step cloud classification lesson.
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Cumulus humilis (Cu hum)
Learn to identify a cloud that holds the classification of Cumulus humilis (Cu hum) in this week's cloud classification lesson.
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Cumulonimbus calvus praecipitatio (Cb cal pra)
Learn to identify a cloud that holds the classification of Cumulonimbus calvus (Cb cal) in this week's cloud classification lesson.
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Altostratus opacus (As op)
Learn how to identify altostratus opacus by its widespread, opaque mid-level layer in this step-by-step cloud classification lesson.
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Stratus fractus fluctus (St fra flu)
Learn to identify a cloud that holds the classification of Stratus fluctus (St flu) in this week's cloud classification lesson.
Read and identify →Take your cloud lesson outside
Use our free cloud observation worksheet to sketch the sky, record identifying clues, and practice three cloud names. The second page includes a teacher key and a quick reference to the ten cloud types.
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Learn cloud identification with a free 136-page ebook
Take the visual guide with you. The ebook explains the ten types of clouds with original photographs, illustrations, identification tips, and comparisons between similar clouds.
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