20-28 Moderate Breeze M Small branches move, loose paper raised into the air. A H C Small waves growing longer, numerous whitecaps. 29-38 Fresh Breeze M Small trees sway. Near Gale e Whole trees moving, resistance felt walking against the wind. A f C Heaps of waves, streaks of foam from breaking waves.
Twigs break off, walking against the wind impeded.
Strong Gale P Large branches break off, slight structural damage. Heavy rolling sea with further reduced visibility. Violent rolling sea with significantly reduced visibility. This is seldom encountered on land. Visibility greatly reduced.