cumulonimbus clouds
multicell thunderstoms
Tornadoes are spawned by cumulonimbus clouds, which are multi-level clouds.
The clouds that thunderstorms from in are Nimbus clouds. Any type of Nimbus cloud can forms a thunderstorm. p.s. To divine a Nimbus cloud it is ether black or gray. But not every Nimbus cloud forms a thunderstorm only some, but keep that in mined.
When a tornado forms it often produces a funnel cloud.
Clouds at 4
Nimbo-stratus and stratus clouds form at low altitudes.
clouds
Water vapor forms clouds when it condenses in the atmosphere.
It forms clouds.
rain
i think stratosphere
Hail normally forms in cumulonimbus clouds.