Moreover, the turbulence inside a cloud can become extreme and break apart an aircraft. ... At the point where the two zones meet, there is a wall cloud that could initiate tornadoes. Moreover, even the cumulus congestus associated with a supercell thunderstorm can be very dangerous.

Is it safe to fly through cumulus clouds?

As a VFR pilot, never fly above a cumulus cloud or even try to climb above them unless you have an oxygen equipped aircraft that can climb strongly into the flight levels. Cumulus can often out climb general aviation aircraft and the tops can be higher than most GA aircraft can reach.

Are cumulus clouds good or bad?

Cumulus congestus clouds are usually associated with bad weather. These clouds grow to great heights and usually become cumulonimbus clouds. Their tops look like cauliflower heads and indicate that light to heavy showers can occur.