If the METAR weather grouping includes the contraction "VC", what does this denote?

The contraction "VC" in a METAR weather grouping specifically indicates that the weather conditions are occurring in the vicinity of the airport, typically within 5 to 10 statute miles. This term is used to inform pilots and other aviation personnel about weather phenomena that may not be directly at the airport but could still impact operations, such as visibility, precipitation, or other hazards that are nearby.

Understanding the term "vicinity" is crucial since it alerts those interpreting the METAR about conditions that might affect the approach or departure from the airport, even if those conditions are not happening on the airport's grounds. This situational awareness is essential for flight safety and operational decision-making. Thus, the correct choice reflects the correct radius in which the conditions are relevant to the airport's operations.