What weather condition is indicated by "VRB" in a METAR report?

The term "VRB" in a METAR report specifically refers to variable winds. This indicates that the wind direction is changing and does not have a consistent direction. Instead of a steady wind blowing from one specific direction, variable winds can fluctuate over a wide range. This is crucial information for pilots as it impacts flight operations, particularly during takeoff and landing when consistent wind patterns are preferred for safety and maneuverability. Understanding that "VRB" denotes variable winds helps in interpreting wind conditions accurately, which is essential for weather assessments in aviation.