What is the purpose of a TAF?

The purpose of a Terminal Aerodrome Forecast (TAF) is to provide forecasted weather conditions. TAFs are specifically designed to communicate expected weather phenomena at an airport or aerodrome over a period, typically covering a 24 or 30-hour timeframe. These forecasts include information about wind direction and speed, visibility, significant weather, and expected changes, which are crucial for flight planning and operations.

Unlike a METAR, which reports current weather conditions, TAFs look ahead to what pilots and air traffic controllers can expect in terms of weather. This forward-looking aspect is essential for ensuring safety, as it allows for proper planning for takeoffs, landings, and in-flight conditions by providing crucial details on potential hazards such as turbulence or severe weather.

The other choices reflect different aspects of meteorological reporting but do not encompass the specific aim of TAFs, which is to forecast rather than to report, summarize, or warn.