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 __Cumulonimbous Cloud: __ A Cumulonimbous Cloud is the largest cloud in the sky. This cloud appears when a storm is coming. This cloud produces rain, and sometimes bad storms such as tornadoes. Cumulonimbous clouds are low clouds. These clouds don't just produce rain and storms, they can also be in nice and fair weather. They can be white and puffy or dark and gray. The suffix on 'Cumulonimbous' is '-nimbous'. The suffix '-nimbous' means rain. Cumulonimbous has 'Cumulo-' in it, which is a type of cloud but smaller than a Cumulonimbous cloud.

Here are some pictures of Cumulonimbous clouds that appear in stormy weather, and are gray:









Here are Cumulonimbous clouds that appear in fair weather, and are white:











Lenticular Clouds are clouds that look like spaceships. These clouds are found in the mountains. (Shown in the picture above.)