Beaufort scale used in Taiwan and mainland China, which are often affected by typhoons. Internationally, WMO Manual on Marine Meteorological Services (2012 edition) defined the Beaufort Scale only up to force 12 and there was no recommendation on the use of the extended scale. Wind speed on the 1946 Beaufort scale is based on the empirical relationship: Where "v" is the equivalent wind speed at 10 metres above the sea surface and "B" is Beaufort scale number. For example, "B" = 9.5 is related to 24.5 m/s which is equal to the lower limit of "10 Beaufort". Using this formula the highest
Scale Force Scale Force Scale Force is considered the highest waterfall in the English Lake District. Opinions vary about how its precise height is calculated, but the total height is normally stated as 170 feet (51.8m). It lies on the stream Scale Beck. The waterfall – or force (a Norse term for waterfall) – is hidden in a deep gorge on the northern flank of Red Pike. It lies south of Crummock Water and is near the village of Buttermere. William Wordsworth described Scale Force as "a fine chasm, with a lofty, though but slender, fall of water", while Samuel Taylor Coleridge