#2185: Cumulonimbus

[Drawing of a small cloud with with a label beneath:]

Cumulus

[Drawing of a medium sized tall hourglass shaped cloud with a label beneath:]

Cumulonimbus

[Drawing of a large cloud, larger at the top than at the bottom, with a label beneath:]

Cumulonimbulonimbus

[Drawing of a huge and very complicated cloud in three layers, with a label beneath:]

Cumulonimbulonimbulocumulonimbus