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An anemometer is commonly used to measure wind speed. Global distribution of wind speed at 10m above ground averaged over the years 1981–2010 from the CHELSA-BIOCLIM+ data set [1] In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in ...
A wind speed gradient of 4 (m/s)/km can produce refraction equal to a typical temperature lapse rate of 7.5 °C/km. [51] Higher values of wind gradient will refract sound downward toward the surface in the downwind direction, [52] eliminating the acoustic shadow on the downwind side. This will increase the audibility of sounds downwind.
Knowing the wind sampling average is important, as the value of a one-minute sustained wind is typically 14% greater than a ten-minute sustained wind. [16] A short burst of high speed wind is termed a wind gust ; one technical definition of a wind gust is: the maxima that exceed the lowest wind speed measured during a ten-minute time interval ...
The wind speeds are greatest where temperature differences between air masses are greatest, and often exceed 92 km/h (50 kn; 57 mph). [24] Speeds of 400 km/h (220 kn; 250 mph) have been measured. [29] The jet stream moves from west to east bringing changes of weather. [30]
Recently, the wind speeds were re-examined and adjusted to a maximum official wind speed of 321 mph (516.6 km/h). [ 314 ] A DOW calculation of a subvortice of the 2013 El Reno tornado was estimated in a range of 257–336 mph (414–541 km/h) in 2024.
Conditions necessary for a fully developed sea at given wind speeds, and the parameters of the resulting waves Wind conditions Wave size Wind speed in one direction Fetch Wind duration Average height Average wavelength Average period and speed 19 km/h (12 mph) 19 km (12 mi) 2 hr: 0.27 m (0.89 ft) 8.5 m (28 ft) 3.0 sec, 10.2 km/h (9.3 ft/sec)
Commercial flights typically travel between 480 to 575 mph speeds, ... the second "strongest upper-level wind recorded in local history going back to the mid-20th century," the National Weather ...
Tropical cyclones can attain some of the lowest pressures over large areas on Earth. However, although there is a strong connection between lowered pressures and higher wind speeds, storms with the lowest pressures may not have the highest wind speeds, as each storm's relationship between wind and pressure is slightly different. [1]