Gail Force -

Winds are categorized based on their intensity and the observed conditions they cause:

Gale force winds can cause structural damage to roofing and siding and create life-threatening conditions for mariners. Weather Spotter's Field Guide - Non-supercell Tornadoes gail force

34–40 knots. Moderately high waves of greater length; edges of crests break into spindrift. Winds are categorized based on their intensity and

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