What does "BKN" denote in a TAF report?

In a TAF report, the term "BKN" signifies "broken clouds." This is a specific aviation meteorological term used to describe cloud coverage. When "BKN" is indicated, it means that between 5/8 and 7/8 of the sky is covered by clouds. This classification of cloud cover is essential for pilots and air traffic controllers as it provides critical information regarding potential weather conditions affecting visibility and flight operations.

Understanding cloud cover is crucial for flight safety, as broken clouds can present challenges for visibility during takeoff and landing. In contrast to this, terms like "CLR" or "SKC" would indicate clear skies, which suggest no significant cloud cover, while "OVC" refers to overcast clouds, meaning the sky is completely covered. Cloudless conditions would denote a state of no clouds present. Therefore, recognizing the terminology used in TAF reports helps in assessing flying conditions accurately.