Web15 rows · These values refer to well-developed wind waves of the open sea. The lag effect between the wind getting up and the sea increasing should be borne in mind. The official … WebWind-speed definition: (meteorology) The local speed of the wind .

Beaufort scale - Wikipedia

The scale was devised in 1805 by the Irish hydrographer Francis Beaufort (later Rear Admiral), a Royal Navy officer, while serving on HMS Woolwich. The scale that carries Beaufort's name had a long and complex evolution from the previous work of others (including Daniel Defoe the century before) to when Beaufort was Hydrographer of the Navy in the 1830s, when it was adopted offi… WebBeaufort Scale Number Description Mean wind speed in knots Mean wind speed in km/h Illustration Calm <1 < 2 1 Light 1-3 2 - 6 2 4-6 7 - 12 local pinch point fund

Wind speed definition and meaning Collins English Dictionary

http://www.bom.gov.au/marine/knowledge-centre/reference/wind.shtml WebThe instruments used to measure wind are known as anemometers and can record wind speed, direction and the strength of gusts. The normal unit of wind speed is the knot ( … WebSpeed: Description: Specifications for use at sea (mph) (knots) Specifications for use on land: 0: 0-1: 0-1: Calm: Sea like a mirror. Calm; smoke rises vertically. 1: 1-3: 1-3: Light Air: Ripples with the appearance of scales are formed, but without foam crests. Direction of wind shown by smoke drift, but not by wind vanes. 2: 4-7: 4-6: Light ... indian food store austin