Wind gust World Meteorological Organization. Any significant variation at this mean wind during the ten minutes preceding the observation are noted as gusts in messages such as METAR. It is generally reported in METAR when the peak wind speed reaches at least 16 knots and the variation in wind speed between the peaks and average wind is at least 9 to 10 knots. In marine meteorology, the top speed of a burst is expressed in meters per second (m/s) or in knots, while the Beaufort scale is used for reporting the mean speed. When the maximum speed exceeds the average speed by
Scale Force wrote, "Scale Force, the white downfall of which glimmered through the trees, that hang before it like the bushy hair over a madman's eyes." 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