What does the abbreviation "BCFG" represent in a METAR?

The abbreviation "BCFG" in a METAR stands for "patchy fog." This term is used in aviation weather reports to indicate that there are areas of fog that are not uniform; some places may have reduced visibility due to fog, while other nearby areas might be clear. Recognizing patches of fog is crucial for pilots and dispatchers as it can significantly impact visibility and flight safety.

Understanding the other terms can provide clarity on why they don’t apply: "blowing fog" would refer to fog that is moving due to wind, while "bottom cloud fog" and "bank fog" are not standard terminologies used in METAR reports. Being familiar with these distinctions can assist in better interpreting METAR reports and making informed decisions regarding flight operations and safety.