This is a photo of mammatus clouds, taken in Weld County, Colorado.
Click on image for full size
Photo courtesy of Gregory Thompson

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Clouds

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Cloud Formation Due to Surface Heating

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Mammatus

Mammatus clouds are pouches of clouds that hang underneath the base of a cloud. Usually mammatus clouds form with cumulonimbus clouds.

Mammatus clouds can look like a field of tennis balls or melons.

Last modified November 30, 2007 by Becca Hatheway.

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