Gail Force (2024)

28–33 knots. Sea heaps up and white foam from breaking waves begins to be blown in streaks.

48–55 knots. Very high waves with long overhanging crests; the sea surface takes on a white appearance. Safety and Preparation Guide gail force

34–40 knots. Moderately high waves of greater length; edges of crests break into spindrift. 28–33 knots

Winds are categorized based on their intensity and the observed conditions they cause: sea begins to roll.

41–47 knots. High waves; dense streaks of foam along the direction of the wind; sea begins to roll.