The cloud type associated with thunderstorms is called cumulonimbus. These towering, dense clouds are capable of producing severe weather, including heavy rainfall, lightning, hail, and strong winds. Cumulonimbus clouds form when warm, moist air rises rapidly, often during warm days, creating convection currents. The height of these clouds can extend well into the atmosphere, sometimes reaching 39,000 feet or more. Within these clouds, updrafts and downdrafts create dynamic and turbulent conditions that can result in severe weather events. Recognizing cumulonimbus clouds is essential for meteorologists and individuals in settings vulnerable to thunderstorms.