What does a "broken" cloud cover signify in a METAR?

A "broken" cloud cover in a METAR indicates that the cloud coverage is significant, specifically falling within the range of 5/8 to 7/8 of the sky being covered by clouds. This term is used to describe the extent of cloudiness in a way that is useful for pilots and meteorologists, as it reflects important information regarding visibility and potential weather conditions.

When meteorological observations classify cloud cover, different terms are used to denote various extents, such as few, scattered, broken, and overcast. "Broken" clouds suggest a substantial amount of cloud cover that might affect flight operations, particularly in determining whether visual flight rules (VFR) can be safely maintained. Thus, understanding this terminology is crucial for interpreting METAR reports effectively.