Still, calm air, smoke will rise vertically. Water is mirror-like. Small ripples appear on water surface.
Small wavelets develop, crests are glassy.
Large wavelets, crests start to break, some whitecaps. Moderate Breeze Small branches move, raises dust, leaves and paper. Small waves develop, becoming longer, whitecaps. Larger waves form, whitecaps prevalent, spray. Moderate or Near Gale Large trees sway, becoming difficult to walk.