When the height of a layer falls halfway between two reportable values, which value is reported?

When determining which value to report when the height of a layer falls halfway between two reportable values, the convention is to report the lower value. This practice is in place to maintain consistency and clarity in meteorological reporting.

The rationale behind reporting the lower value is rooted in standard operating procedures for weather observations, which prioritize clear communication and minimize misunderstandings. If a sky layer were to be reported with an exact height that falls in between two thresholds, it could lead to ambiguity regarding the actual conditions. By consistently choosing the lower value, observers ensure that only the more conservative estimate is communicated, allowing for a safer interpretation of conditions, particularly in aviation contexts where precise altitudinal information is crucial.

In meteorological observation, adhering to this convention helps maintain uniformity across various reports, making it easier for pilots, dispatchers, and meteorologists to assess and interpret weather conditions accurately and efficiently.