How tall a cumulonimbus cloud can grow?

Cumulonimbus clouds can grow to impressive heights, often reaching up to 60,000 feet (about 18,300 meters) or more in extreme cases. These towering clouds are associated with severe weather phenomena, including thunderstorms, lightning, and tornadoes. Their vertical development is fueled by strong updrafts, allowing them to penetrate the troposphere and sometimes even extend into the stratosphere.