cumulonimbus
The entire thunderstorm is a cumulonimbus cloud.
This kind of cloud is typically called a wall cloud. Wall clouds are often associated with severe thunderstorms and can be a precursor to the development of a tornado.
A cumulonimbus cloud/thunderstorm cloud
Cumulonimbus
by cloud
Communolimbus
A thunderstorm cloud is a type of rain cloud that produces thunder and lightning due to the presence of strong updrafts and downdrafts within the cloud. While rain clouds can produce precipitation in the form of rain, they do not necessarily have the same intense vertical movement and electrical activity as thunderstorm clouds.
cumulonimbus cloud
It is a thunderstorm.
The anvil is not part of a tornado nor is it directly related to tornadoes. When a thunderstorm forms, is produces a tall cloud called a cumulonimbus. The cloud rises until it reaches a stable layer, at which point the top spreads out flat. This flat top to the thunderstorm cloud is called the anvil. Most tornadoes are produced by a kind of thunderstorm called a supercell. Supercells usually have very well shaped anvils.
Neither. A funnel cloud that touches the ground is a tornado. A thunderhead is the sort of cloud that develops into a thunderstorm, and a supercell is the kind of thunderstorm most likely to produce a tornado.
The cumulonimbus cloud.