Perhaps scattered white horses. Chance of some spray. Probably some spray. The foam is blown in well-marked streaks along the direction of the wind. Dense streaks of foam along the direction of the wind.
Crests of waves begin to topple, tumble and roll over.
Spray may affect visibility. Storm Very high waves with long over- hanging crests. The resulting foam, in great patches, is blown in dense white streaks along the direction of the wind. On the whole the surface of the sea takes on a white appearance. The 'tumbling' of the sea becomes heavy and shock-like.