What is a common characteristic of cumulonimbus clouds?

Cumulonimbus clouds are significant for their ability to produce severe weather phenomena, including heavy rain and hail. These clouds are tall, towering structures that can reach high altitudes, and they are often associated with thunderstorms. The intense updrafts within these clouds can lead to the formation of large ice particles, which may eventually fall as hail. Furthermore, the precipitation associated with cumulonimbus clouds can be quite heavy, resulting in localized flooding during thunderstorms. Their development is often linked to unstable atmospheric conditions, meaning they do not indicate fair weather or high-altitude stability, nor do they exhibit a layered structure like stratiform clouds. Instead, cumulonimbus clouds are known for their dynamic and often chaotic development, making them distinct in terms of severe weather production.