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Direction shown by smoke drift but not by wind vanes 2 Light breeze 4–6 knots 4–7 mph 6–11 km/h 1.6–3.3 m/s 1–2 ft 0.3–0.6 m Small wavelets still short but more pronounced; crests have a glassy appearance but do not break Wind felt on face; leaves rustle; wind vane moved by wind 3 Gentle breeze 7–10 knots 8–12 mph 12–19 km/h
Wind gust speeds during Storm Abigail in November 2015 Sound of wind blowing in a pine forest at around 25 m/sec, with gust alterations. A wind gust or just gust is a brief, sudden increase in the wind speed. It usually lasts for less than 20 seconds, briefer than a squall, which lasts minutes. A gust is followed by a lull (or slackening) in ...
The fastest wind speed not related to tornadoes ever recorded was during the passage of Tropical Cyclone Olivia on 10 April 1996: an automatic weather station on Barrow Island, Australia, registered a maximum wind gust of 113.3 m/s (408 km/h; 253 mph; 220.2 kn; 372 ft/s) [6] [7] The wind gust was evaluated by the WMO Evaluation Panel, who found ...
A system is designated as a tropical depression or a subtropical depression when it reaches wind speeds above 28 knots (52 km/h; 32 mph). If a tropical depression reaches wind speeds of 35 knots (65 km/h; 40 mph) then it will be classified as a moderate tropical storm and assigned a name by either the Sub Regional Center in Mauritius or ...
One day looms large in Mount Washington's annals of air: April 12, 1934, known as the Big Wind, when the summit experienced its strongest gust on record: 231 mph. Friday is the Big Wind's 90th ...
Wind gradient can have a noticeable effect on ground launches. If the wind gradient is significant or sudden, or both, and the pilot maintains the same pitch attitude, the indicated airspeed will increase, possibly exceeding the maximum ground launch tow speed. The pilot must adjust the airspeed to deal with the effect of the gradient. [31]
Warm water vs. wind shear. However, while there's plenty of warm water for intensification, strong winds aloft could prevent strengthening: ... Gusts of up to 115 mph are possible.
The von Kármán wind turbulence model (also known as von Kármán gusts) is a mathematical model of continuous gusts.It matches observed continuous gusts better than that Dryden Wind Turbulence Model [1] and is the preferred model of the United States Department of Defense in most aircraft design and simulation applications. [2]