What does "light and variable" refer to in a Winds Aloft Forecast?

In the context of a Winds Aloft Forecast, "light and variable" specifically refers to conditions characterized by wind speeds that are less than 5 knots. The term indicates that the winds are calm and fluctuate in direction rather than having a sustained steady breeze. This is significant for pilots as such conditions generally imply minimal impact on flight operations, making for smoother flying.

A wind speed of less than 5 knots indicates very light winds, often resulting in calm and stable flying conditions. It's essential for pilots to understand this description, as it can affect flight planning, especially regarding takeoff and landing operations.

Other options provided do not correctly define "light and variable." Winds defined as 10-15 knots would be considered moderate rather than light. Winds from multiple directions may imply a lack of consistency in air movement but does not specifically denote the low strength referenced by "light." Lastly, a gusty wind condition suggests faster, stronger changes in wind speed and direction, which is contradictory to the calmness implied by "light and variable."