Featuring Mammatus Cumulonimbus Capillatus

A cumulonimbus is a dense, towering vertical cloud, forming from water vapor carried by powerful upward air currents. If observed during a storm, these clouds may be referred to as thunderheads.

Cumulonimbus can form alone, in clusters, or along cold front squall lines. These clouds are capable of producing lightning and other dangerous severe weather, such as tornadoes and hailstones. Cumulonimbus progresses from overdeveloped cumulus congestus clouds and may further develop as part of a supercell.

The cumulonimbus base may extend several kilometers across and occupy low to middle altitudes - formed at altitudes from approximately 200 to 4,000m. Peaks typically reach to as much as 12,000m, with extreme instances as high as 21,000m or more.

Cumulonimbus capillatus: cloud with cirrus-like, fibrous-edged top

Mammatus is a cellular pattern of pouches hanging underneath the base of a cloud, typically a cumulonimbus raincloud, although they may be attached to other classes of parent clouds. They are most often associated with anvil clouds and also severe thunderstorms. The distinct "lumpy" undersides are formed by cold air sinking down to form the pockets contrary to the puffs of clouds rising through the convection of warm air.

Source: #wikipedia
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Shot on the Nikon Z7II
This was a supermassive cloud on the morning of a thunderous night.

Dimensions: 5400 x 3600