Wind atmosphere based upon how far clouds move from one image to the next. Wind engineering describes the study of the effects of the wind on the built environment, including buildings, bridges and other man-made objects. Historically, the Beaufort wind force scale (created by Beaufort) provides an empirical description of wind speed based on observed sea conditions. Originally it was a 13-level scale, but during the 1940s, the scale was expanded to 17 levels. There are general terms that differentiate winds of different average speeds such as a breeze, a gale, a storm, tornado, or a hurricane. Within the Beaufort scale,
Ode to the West Wind is not sure of that either. He says that it might be "a creative you interpretation of the billowing seaweed; or of the glimmering sky reflected on the heaving surface". Both possibilities seem to be logical. To explain the appearance of an underwater world, it might be easier to explain it by something that is realistic; and that might be that the wind is able to produce illusions on the water. With its pressure, the wind "would waken the appearance of a city". From what is known of the "wind" from the last two cantos, it became clear that the