What does PL stand for in a METAR?

In the context of METAR reports, the abbreviation "PL" stands for "Ice Pellets." METAR is an aviation routine weather report that provides essential information about weather conditions, and specific codes are used to represent various weather phenomena.

Ice pellets, also referred to as sleet, are small balls or lumps of ice that form when freezing rain falls through a layer of cold air, causing the rain to freeze before reaching the ground. This specific code is essential for pilots and dispatchers as it indicates the potential for icy runway conditions, which can significantly affect aircraft operations.

While other options may seem plausible, they do not represent established meteorological or aviation terminology as accurately as "Ice Pellets." For instance, precipitation level and partial light are not standardized terms used in METAR reports, and precipitation liquid is not a recognized abbreviation within this context. Understanding these details is critical for interpreting METAR reports accurately and ensuring safe flight operations.