Gale force for coastal areas, between and . The definition is very non-standard. A common alternative definition of the maximum is . The most common way of measuring wind force is with the Beaufort scale which defines a gale as wind from to . It is an empirical measure for describing wind speed based mainly on observed sea conditions. On the original 1810 Beaufort wind force scale, there were four different "gale" designations whereas generally today there are two gale forces, 8 and 9, and a near gale 7: The word "gale" is derived from the older "gail", but its origin
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