We just learned that a Tornado Family is multiple tornadoes in one storm.
Another type of weather is a Wall Cloud.
We learned a while back that a shelf cloud is a big cloud that is at the edge of a thunderstorm moving out.
A wall cloud looks a lot like a shelf cloud, but it is on the inside of the thunderstorm, not on the outside edge.
![wall cloud](https://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Wall_cloud_with_lightning_-_NOAA.jpg/640px-Wall_cloud_with_lightning_-_NOAA.jpg)
(from: wikipedia - wall cloud)
Kid Facts - Blast from the past: Cumulonimbus Clouds