Winds are only provided in a GFA if they exceed what speed in knots?

Winds are only included in a GFA when they exceed 20 knots. This threshold is significant because it helps pilots focus on wind conditions that can have a notable impact on flight operations. Light winds, such as those below this value, are generally not considered strong enough to warrant particular attention in forecasting and operational planning, thereby streamlining the information presented in GFAs.

In contrast, winds exceeding this speed can affect aircraft performance, handling, and overall safety, particularly during takeoff, landing, and in the vicinity of weather systems. As a result, only significant wind factors are reported in these forecasts to ensure pilots are adequately informed about conditions that could influence flight decisions. Therefore, the information set at 20 knots serves as a useful baseline for pilots operating under various atmospheric conditions.