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In a Winds Aloft Forecast, what does "light and variable" refer to?

  1. Coded group indicating no wind

  2. Wind speed of 10 to 15 knots

  3. Wind speed less than 5 knots

  4. Coded group for gusty winds

The correct answer is: Wind speed less than 5 knots

In a Winds Aloft Forecast, the phrase "light and variable" specifically describes wind conditions where the wind speed is typically less than 5 knots. This terminology indicates that the winds are gentle and can change direction frequently. Very light winds can have minimal impact on flight performance and are generally not significant enough to be characterized by a steady direction or strong intensity. Unlike stronger winds, which are typically associated with specific directional and velocity indicators, "light and variable" reflects calm and inconsistent wind conditions, helping pilots anticipate the likelihood of turbulence and adjustments needed during flight.