In the Remarks (RMKS), what does CIG stand for?

CIG stands for Ceiling in the context of meteorological remarks. In aviation weather reporting, the term "ceiling" specifically refers to the height of the lowest layer of clouds that is reported as being broken or overcast, or to the height of the highest cloud layer that obscures the sky. This information is crucial for pilots as it helps them assess the conditions they may encounter during flight, especially for takeoff and landing, where minimum ceiling requirements must be met for safe operations.

While visibility, cloud coverage, and wind information are also important elements in weather reporting, they are not encapsulated by the acronym CIG. Understanding ceiling helps pilots make informed decisions regarding flight safety and navigation.