- Cloud types, Cb: the forward side of a Cumulonimbus cloud
- W031235Z
- Cloud types, Cb: the forward side of a Cumulonimbus cloud features an anvil plume that spreads out and forward from a dark area in the distance where rising air feeds the storm’s active core region. As the highest anvil parts move away from their source, they become thinner and frayed, and completely frozen.
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