What does an overcast cloud cover imply?

An overcast cloud cover indicates that the sky is completely covered by clouds, which corresponds to full cloud cover. This condition can affect visibility and may have implications for flight operations. In aviation, understanding cloud cover is crucial for assessing weather conditions, planning flights, and ensuring safety.

Full cloud cover means that there are no breaks in the clouds, which is significant for pilots as it often suggests that the sky is entirely obscured, potentially leading to low visibility situations. Different measurements of cloud cover, such as 1/8, 1/2, or 7/8, indicate varying degrees of cloud coverage, but in the case of overcast conditions, the term specifically denotes that the entire sky is clouded.