- Cloud types, Cb: a young Cumulonimbus cloud with classic flat base
![Cloud types, Cb: a young Cumulonimbus cloud with classic flat base](http://www.skyartstock.com/peas/W012597Z-SKYART.jpg)
- W012597Z
- Cloud types, Cb: a single Cumulus Congestus cloud has grown into a small, young Cumulonimbus cloud with classic flat, dark base and cauliflower top (behind bits of Fractus). An anvil is just beginning to appear on the forward side.
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