How often are Graphic Area Forecast (GFA) Charts issued?

Graphic Area Forecast (GFA) Charts are issued every 6 hours to provide updated and relevant weather information for pilots and aviation operations. This frequency allows for timely updates while balancing the need for comprehensive weather analysis that covers a larger geographic area. The 6-hour issuance cycle ensures that pilots receive weather data that reflects changing conditions without overwhelming them with constant updates, which would be the case with more frequent issuances. This helps in planning flights and routes effectively while maintaining safety.