Definitions for "FUNNEL CLOUD"
tornado which is beginning its descent from the base of a cumulonimbus cloud. This severe weather event may or may not reach the ground surface.
A ROTATING vortex extending from the base of a thunderstorm (or developing convective cloud) that would become a tornado IF it touched the ground.
A violent, rotating column of air which does not touch the surface, usually appended to a cumulonimbus cloud.