Cumulonimbus clouds (thunder clouds)
Tornadoes are produced by cumulonimbus clouds. Often a wall cloud appears near the base of a cumulonimbus before a tornado forms.
Although no tornadoes are the same, they need certain conditions to form - particularly intense or unseasonable heat.As the ground tempertaure increases, moist air heats and starts to rise. When the...
cumulonimbus clouds
Cumulonimbus icnus is the most likely type of storm cloud to produce a tornado. These cumulonimbus clouds are often supercells.