Which altitude range defines middle clouds?

Middle clouds are defined as those that typically exist at altitudes ranging from 6,500 feet to 20,000 feet above ground level (AGL). This classification is part of the cloud altitude nomenclature established by meteorologists, where clouds are categorized into low, middle, and high based on their elevation. Middle clouds encompass a variety of types, such as altostratus and altocumulus, which can often have a significant impact on weather patterns, including precipitation and visibility.

The altitude range of 6,500 to 20,000 feet AGL is particularly significant because it allows these clouds to develop and persist at a height where they can reflect sunlight and influence weather systems, yet they are not so high that they are only associated with jet streams or other upper-atmosphere phenomena. This makes middle clouds a crucial element for pilots to consider when navigating and understanding prevailing weather conditions.

The other altitude ranges provided do not correspond to the classification of middle clouds, as they either fall below or above the established middle cloud range.