Wind speeds usually mean the movement of air in an outside environment, but the speed of movement of air inside is also important in many cases, including weather forecasting, aircraft and maritime operations, construction and civil engineering. High wind speeds can cause unpleasant side effects, and strong winds often have special names, including gales, hurricanes, and typhoons. The highest wind speed ever measured on earth, 231 miles per hour, was recorded on Mount Washington (New Hampshire).
The most simple method of measuring wind speed is to estimate the speed from the observed event against the Beaufort Scale. Obviously, this method is not the most accurate available, so each value on the scale represents a range of values, three on the scale, for example, covers the wind speeds between seven and ten knots.
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