This tapering cone doesn't appear to be in contact with the ground, but a close inspection reveals the telltale presence of debris being kicked up by its tail. Twisters, in their appearance, can fool poorly trained storm spotters. Sometimes, particularly in dry environments, they will not be "filled out" all the way down. But what seems to be only a hovering funnel cloud may be actually a tornado, spinning furiously on the ground.

The wall cloud is a low-hanging, rotating feature below the base of the thunderstorm updraft. "Wall" is probably not a good descriptive word for it, but an early and better characterization, "pedestal", never caught on. A wall cloud often precedes the formation of a tornado. Here, the tornado on the left is roping out as the wall cloud on the right organizes further and strengthens. Out of the shaggy cloud, a new tornado will appear.