- Cloud type, Acc: Altocumulus Castellanus in discrete elements
- W031217Z
- Cloud type, Acc: Altocumulus Castellanus clouds arranged in discrete elements, like little puffballs on tiny bases. With separated elements, this example leans toward Floccus type but there is enough continuity and flat, black base structure to justify Castellanus as dominant. A casual glance at this sky might lead to the erroneous assumption that they are Cumulus clouds.
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