How often are Terminal Aerodrome Forecasts (TAF) issued and what is their typical validity period?

Terminal Aerodrome Forecasts (TAF) are indeed issued four times daily, providing updated weather information critical for aviation operations. The typical validity period of a TAF is usually 24 hours, which is essential for pilots and air traffic controllers in their planning and safety decision-making processes.

TAFs are designed to offer brief yet specific predictions of weather conditions—for example, visibility, wind conditions, and significant weather phenomena—over the terminal area of an airport. The four issuance times ensure that pilots receive timely updates, which is crucial given the rapidly changing nature of weather conditions that can affect flight operations and safety.

Consequently, the choice stating that TAFs are valid for 24 hours and issued four times daily accurately reflects the standard practice within the aviation community, thereby highlighting the importance of these forecasts in supporting safe and effective flight operations.