Yes. All clouds are in the atmosphere.
troposphere
Almost all clouds, including the cumulonimbus, are contained in the troposphere although some clouds occasionally protrude upward into the next level.
Cumulonimbus clouds form when the atmosphere is unstable. One factor in an unstable atmosphere is a rapid temperature drop with increasing height. When the sun can shine directly on the ground it heats the lowest part of the atmosphere, which can lead to instability. Conversely, clouds block some of the sun's light from reaching the ground and tend to make the atmosphere more stable, which makes it harder for cumulonimbus clouds to form.
Cumulonimbus clouds are storm clouds.
the clouds are cumulonimbus clouds
cumulonimbus clouds
Cumulonimbus clouds Cumulonimbus clouds.
Cumulonimbus are the clouds of thunderstorms.
Cumulonimbus clouds bring thunderstorms.
The clouds that usually produces precipitation are called cumulus, cumulonimbus and nimbostratus clouds. These clouds are in the lowest level of the atmosphere.
Cumulonimbus clouds are also called thunderheads.
No. Thunderstorms form from cumulonimbus clouds, and tornadoes form from thunderstorms. Cucmulonimbus clouds develop in highly unstable atmosphere, while nimbo stratus indicates a fairly stable atmosphere.