cumulonimbus, sometimes called a thunderhead.
Nimbus
Towering cumulus clouds.
the biggest cloud today is the cirrocumulus cloudit is also called a thunder cloud
Thunderstorms can result from cumulonimbus clouds: http://en.wikipedia.org/wiki/Cumulonimbus_cloud
cirrus
There is no such thing as a cumulonimbus tornado. A cumulonimbus cloud is a ver large towering cloud. Most thunderstorms are cumulonimbus clouds, and some of the strongest of these storms are what produce tornadoes.
A dense towering vertical cloud associated with thunderstorms and atmospheric instability
Cumulonimbus clouds - scientific name for thunderheads (the clouds that produce thunderstorms)
A cumulonimbus cloud
Cumulonimbus is a type of cloud, very dense and fluffy, sometimes pure white or they can be dark and grey, heavy rain and thunderstorms are usually associated with this cloud.
Yes. Hail is produce by thunderstorms, which form from cumulonimbus clouds.
fluffy fluffy
They cannot form without it. Tornadoes are produced by thunderstorms and by definition must connect to the cloud base. Prolonged non convective cloud cover can preven the air near the ground from becoming warm enough to produce thunderstorms and thus tornadoes.
There are several types of cloud involved in tornado formation at different stages. Tornadoes form from thunderstorms, which take the form of cumulonimbus clouds, though only a fraction of thunderstorms produce tornadoes. The rotation in a thunderstorm that has the potential to produce a tornado is often marked by a wall cloud. Finally, the developing tornado itself is usually marked by a funnel cloud.
Cumulonimbus Cloud:)
Very dark cloud
No. Status clouds can bring rain but not thunderstorms and certainly not tornadoes. Cirrus clouds are sometimes torn away from thunderstorms, but they do not cause them. Tornadoes and the thunderstorms that produce them are associate with cumulonimbus clouds.