What effect does cloud cover have on visibility?

Cloud cover can indeed reduce visibility, especially when it involves thick layers of clouds. This is primarily due to the fact that dense clouds can obscure features on the ground or in the distance, making it difficult for pilots to see and assess their surroundings clearly. In addition, thick cloud cover may be associated with precipitation or fog, which can further diminish visibility.

Moreover, clouds can also impact visibility during the transition between different weather conditions, such as when a pilot is ascending or descending through layers of clouds. This can lead to sudden changes in visibility that are critical for flight safety. The presence of clouds can also contribute to conditions of low visibility in conjunction with other weather phenomena, such as mist, fog, or rain, reinforcing that thick cloud cover directly influences visibility.

Understanding the role of cloud cover is essential for pilots in making informed decisions regarding navigation and safety during flights, particularly in varying weather conditions.