What is the role of METAR/TAF within RAWS operations?

• A. They provide current and forecast weather data used for flight planning and operational decision-making.
• B. Renders runway lighting sequences automatically.
• C. Provides NOTAM inundation alerts.
• D. Provides airspace sector boundaries.

Answer: (A)

METAR and TAF deliver the weather information that RAWS relies on to plan and operate safely. A METAR is a current weather observation that reports conditions like wind, visibility, ceilings, precipitation, temperature, dew point, and pressure. A TAF forecasts those same elements for the next 24 to 30 hours, or longer in some formats. Together, they give a real-time snapshot and an expected trend of the weather.

In RAWS operations, this information feeds how you plan flights and schedule activities, how you brief crews, and how you make day-to-day decisions. Knowing the current wind and visibility helps determine which runways are suitable, what minimums to apply, and what approach or departure procedures to use. The forecast component informs you about likely changes during the operation—allowing you to anticipate delayed takeoffs, diversions, or the need for contingency plans. This weather data also supports safety-critical actions like deciding when deicing is needed, estimating braking performance, and anticipating icing or precipitation impacts.

These functions aren’t about controlling runway lights, NOTAM alerts, or mapping airspace boundaries. Those tasks involve other systems and sources, while METAR/TAF specifically provide the weather picture that underpins weather-related decisions in RAWS.