What characteristic does a "BKN" report specify regarding cloud cover?

The characteristic specified by a "BKN" report is that clouds are broken. In meteorological terms, "BKN" stands for "broken clouds," which means that between 5/8 and 7/8 of the sky is covered by clouds. This classification is important for pilots and air traffic controllers as it provides critical information about the cloud cover that could impact flight operations, visibility, and weather conditions.

Understanding cloud cover is essential in aviation, as it can affect everything from flight routes to takeoff and landing procedures. Cloud types and their coverage help in assessing weather patterns and making decisions regarding safety and navigation. The term "broken clouds" is thus a specific term used to convey precise information regarding the extent of cloud coverage in the atmosphere.