What can measure wind power?

Wind has both magnitude and direction. Therefore, wind forecast includes wind speed and wind direction. The magnitude of wind speed is often expressed by several levels of wind. The level of wind is determined based on how much the wind affects objects on the ground. Meteorologically, winds are currently generally divided into thirteen levels (some typhoons are divided into 17 levels): In weather forecasts, terms such as "north wind level 4 to 5" are often heard. The wind force refers to the average wind force; if you hear terms such as "gust level 7", the gust refers to the wind speed that suddenly increases and decreases, and the wind force at this time refers to the wind force at high speed. Represented by the wind arrow, it consists of wind direction stalks and wind feathers. Wind direction stalk: indicates the direction of the wind, there are 8 directions. Wind plume: consists of 3 or 4 dashes and triangles representing strong wind force, vertically to the right of the end of the wind pole (Northern Hemisphere). Surface scene and wind level comparison table Wind level symbol name Wind speed (meters) Land objects and sea surface wave height (meters) 0 Calm wind 0.0-0.2 Smoke straight up and calm 0.0 1 Soft wind 0.3-1.5 Smoke indicates wind direction, microwave peak, no droplets 0.1 2 Light breeze 1.6-3.3 Feeling windy, small wave peaks are not broken 0.2 3 Breeze 3.4-5.4 Flags are unfolded, wave peaks are broken 0.6 4 Gentle breeze 5.5-7.9 Blowing dust, small waves, and white foam Wave peaks 1.0 5 Strong wind 8.0-10.7 Small trees are swaying and breaking. Mofeng Group 2.0 6 Strong winds 10.8-13.8 Power lines are noisy and the waves drop into droplets 3.0 7 Strong winds 13.9-17.1 Difficulty walking and foam forming on the peaks 4.0 8 Strong winds 17.2-20.7 Broken branches, long waves and spray 5.5 9 Strong winds 20.8-24.4 Minor damage Houses were rolled back by wave crests 7.0 10 Strong winds 24.5-28.4 Uprooted trees and the waves rolled and roared 9.0 11 Storms 28.5-32.6 Widespread damage The wave crests were covered in droplets 11.5 12 Typhoon 32.7-36.9 Destroyed huge waves and soaring waves 14.0 **Note: The wind speeds listed in this table It refers to the wind speed value 10 meters above the ground on flat ground.