What is the encoding for a calm wind in the International Terminal Aerodrome Forecast (TAF)?

In the context of the International Terminal Aerodrome Forecast (TAF), a calm wind is represented by the encoding "00000KT." This format specifies that the wind is calm, with "00000" indicating no wind direction or speed. The "KT" at the end denotes that the measurement is in knots.

This specific notation is crucial for pilots and dispatchers, as it provides clear information regarding wind conditions at the airport. When there is no wind, it is essential for operational planning and runway utilization to understand that wind factors are negligible.

Other options, while they represent wind conditions, do not accurately convey a state of calm. "00003KT" suggests a light wind from a specific direction at three knots, "VRB00KT" implies variable winds with no specific direction but still indicates some movement, and "CalmWind" is not a recognized format for TAF and lacks the requisite numeric and directional components. Thus, "00000KT" is the correct and widely accepted representation of a calm wind in TAF reports.