What does wind direction indicate in a METAR or TAF report?

In a METAR or TAF report, wind direction indicates true north. This means that the wind direction is reported based on the way the wind is coming from, measured in degrees from true north, which is the geographical North Pole. This standardization allows pilots and air traffic controllers to have a consistent and clear understanding of wind conditions for flight planning and operational safety.

Understanding that wind is reported in relation to true north is crucial for various reasons. Firstly, it enhances navigational accuracy, as pilots use true north for their navigation and flight paths. Additionally, this consistency is essential when cross-referencing with navigational charts and other reports to ensure safety during flight operations.

In contrast to true north, magnetic north varies by location and can shift over time due to changes in the Earth's magnetic field, which is why it is not used in METAR or TAF reports. The distinction ensures that all aviation-related information is based on a widely understood reference point.