Which type of cloud is typically associated with thunderstorms?

Cumulonimbus clouds are prominently associated with thunderstorms due to their characteristics and formation processes. These clouds are large, towering formations that can reach heights of up to 60,000 feet or more and are capable of producing severe weather conditions such as heavy rain, lightning, hail, and even tornadoes. The presence of strong updrafts within these clouds allows for the growth of the cloud structure, often resulting in an anvil-shaped top that is indicative of severe thunderstorms.

In contrast, cumulus clouds are typically smaller and indicate fair weather, while stratus clouds are spread out and usually bring light precipitation or overcast conditions. Cirrus clouds are high-altitude clouds that are thin and wispy, and they generally indicate changes in the weather but are not associated with thunderstorm activity. Therefore, the defining properties of cumulonimbus clouds make them the primary type of cloud associated with thunderstorms.