- Cloud types, Cb: Cumulonimbus classic supercell severe storm
- W950180S
- Cloud types, Cb: this severe storm is quickly becoming a classic supercell. The Cumulonimbus cloud is very solid and bulky, with large towers shooting up to form a cumuliform anvil that has not had time to freeze and become fibrous. Such thick, rounded anvils are a good indicator of extreme active growth and severity.
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