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.
the unequal heating of the earth's surface causes wind (warm air rising and cold air sinking), and evaporation creates clouds.
rain
i think stratosphere