Which type of cloud is often associated with severe turbulence?

Cumulonimbus clouds are often associated with severe turbulence due to their vertical development and the weather phenomena they can produce. These clouds are characterized by their towering structure, which can extend from low altitudes to high altitudes, often resulting in intense updrafts and downdrafts within the cloud. This vertical motion leads to abrupt changes in airflow, creating turbulence not only within the cloud but also in the surrounding atmosphere.

Cumulonimbus clouds are also linked to severe weather conditions such as thunderstorms, heavy rain, hail, and even tornadoes. The combination of strong thermal currents and moisture contributes to the development of this type of cloud and its associated turbulence, making it critical for pilots to avoid flying near or through these clouds when possible.

In contrast, other types of clouds such as cumulus clouds can indicate fair weather but are typically not associated with the extreme conditions found in cumulonimbus clouds. Stratus clouds, which are generally low and gray, are more indicative of overcast and stable weather with little turbulence. Cirrus clouds, being high-altitude wispy clouds made of ice crystals, usually indicate fair weather and are not associated with turbulence. Understanding these distinctions is vital for pilots in making informed decisions about flight safety and comfort.