What is the first set of weather information provided in a METAR or SPECI?

In a METAR or SPECI report, the first set of weather information presented is indeed the wind. This information is crucial for pilots and air traffic controllers, as it affects aircraft performance, navigation, and safety during takeoff and landing. The wind data is presented immediately after the report's station identifier and the date and time of the observation.

For instance, the wind is typically stated in degrees true and knots, which indicates the direction from which the wind is coming and its speed. This initial reporting ensures that those relying on the data can quickly assess the wind conditions to make informed decisions regarding flying operations.

Temperature, pressure, and humidity are all important meteorological elements as well, but they are included later in the report. Pressure often follows the wind information, followed by temperature and humidity. Understanding this sequence is key for those interpreting METAR reports to prioritize their attention based on the most immediate impacts on flight operations.