Wind

Wind speed is measured by an anemometer, of which there are many kinds. Most common was probably the 3-cup freely rotating anemometer that is calibrated in a wind tunnel.

Wind engineering is a field of structural engineering devoted to the analysis of wind effects on the natural and built environment.

Wind Shift Across A Cold Front from south-southwest to west-northwest A sudden change in wind direction is commonly observed with the passage of a cold front.

Bali wind A strong east wind at the eastern end of Java. Barat A heavy northwest squall in Manado Bay on the north coast of the island of Celebes, prevalent from December to February.

Wind felt on face; leaves rustle; ordinary vanes moved by wind. Small wavelets, ripples formed but do not break: A glassy appearance maintained. 4 ...

Wind felt on face, leaves rustle, wind vanes move. Small short wavelets. 4 - 7 3 ...

Wind chill - a pseudo temperature which lets people know what the cooling effect of the wind would feel like. Wind shear - a velocity gradient. The change in speed and direction over a set change in position of the observer.

Surface wind Wind blowing near the Earth's surface. It is measured, by convention, at a height of 10 m above ground in an area where the distance between the anemometer and any obstruction is at least 10 times the height of the obstruction.

Wind is the natural motion of the air moving parallel to the Earth's surface.

Wind chill Windward Our weather dictionary contains important weather terms from newspaper, radio and television. We strive to enlarge it continuously. If you miss a weather term, don't hesitate to contact us .

WIND WARNING Expect winds to blow steadily at 60 km/hr or more, or gusts of 90 km/hr or more, lasting for at least one hour.

wind vane"An instrument used to indicate or measure wind direction. It consists basically of an asymmetrical, elongated object mounted at its center of gravity about a vertical axis.

wind - Air in motion relative to the surface of the earth. Since vertical components of atmospheric motion are relatively small, especially near the surface of the earth, ...

Wind speeds from 39 to 54 mph (34 to 47 knots). Gale Warning The National Weather Service will issue these marine warnings for 1-minute sustained winds between 34 (39 mph or 63 kph) and 47 knots (54 mph or 87 kph) are expected at end of downwind ...

Wind Shear - the local variation of the wind speed and/or direction in a given direction.

wind Air in motion relative to the earth's surface, caused by the average movement of a "large number" of molecules of air, usually with scales larger than the random motions of individual molecules; ...

WIND CHIMES and WHIRLIGIGS Great Selection at Wind & Weather Online Catalog, click on Yard and Garden WEATHER STATIONS Great Selection at Wind & Weather Online Catalog, click on Weather Instruments ...

Wind Chill Factor - The apparent temperature which describes the cooling effect on exposed skin by the combination of temperature and wind, expressed as the loss of body heat. Increased wind speed will accelerate the loss of body heat.

Wind: Horizontal movement of the air, relating to the surface of the Earth.

Wind-A result due to the differences in air mass pressures (temperature). The wind blows as a result of nature trying to balance the differences. The larger the differences between air masses, the stronger the wind.

WIND Air that flows in relation to the earth's surface, generally horizontally. There are four areas of wind that are measured: direction, speed, character (gusts and squalls), and shifts.

wind shear- vertical eddies or waves of air resulting from one layer of air sliding over another moving at different speeds or directions. Sponsored Links History through Art: Ancient Rome DVD ...

Wind Shear - See shear. Wrapping Gust Front - A gust front which wraps around a mesocyclone, cutting off the inflow of warm moist air to the mesocyclone circulation and resulting in an occluded mesocyclone.

Wind Chill Advisory The National Weather Service issues this product when the wind chill could be life threatening if action is not taken. The criteria for this warning varies from state to state.

Wind speeds in the range of 13 to 19 knots. Monsoon The term originally referred solely to the winds of the Arabian Sea which blow for about six months from the north-east (in winter) and for six months from the south-west (in summer), ...

Wind Chill The wind chill is the effect of the wind on people and animals.

Wind- Air in motion that moves relatively horizontally in relationship to the surface of the Earth. Windchill Factor- A measure of the effect of wind in increasing the heat loss from exposed flesh.

WIND GRADIENT - A slowing of the wind near the earth's surface due to surface roughness or drag. WINDSPEED - The speed of the air in relation to the ground. See AIRSPEED and GROUNDSPEED. WING - The lifting surface of an aircraft.

WIND SHEAR: The change of wind speed or direction with distance, usually vertical. WIND WAVES: Short period and irregular waves created by the flow of air over the water.

WIND PASSAGE: The distance or length of flow of the air past a point during a given interval of time. WIND ROSE: A flower-like diagram indicating the relative frequencies of different wind directions for a given station and period of time.

Wind Aloft- the wind speeds and wind directions at various levels in the atmosphere above the area of surface weather observations, usually above about two thousand feet AGL.

wind chill equivalent temperature: air temperature index that attempts to quantify how cold the air feels when skin is exposed to low air temperature and wind. The faster the wind blows, the colder the air will feel.

Wind Direction The direction from which the wind is blowing. Wind Shear ...

Wind Chill - The perceived cooling that a person feels due to loss of body heat as wind passes over exposed skin. The loss of heat is greater the faster the wind blows.

Wind Chill Factor - It's a number that expresses the cooling effect of moving air at different temperatures. Only air temperature and wind speed is used in the calculation of wind chill temperatures.

Wind Chill Index (Wind Chill Factor, Chill Factor) Index used to determine the relative discomfort resulting from a specific combination of wind speed and air temperature, expressed by the loss of body heat in watts per square meter (of skin).

Wind movement that results in a horizontal net inflow of air into a particular region. Convergent winds at lower levels are associated with upward motion. Contrast with divergence. COOLING DEGREE DAY ...

Wind chill equivalent temperature A theoretical air temperature at which the heat loss from exposed skin under calm conditions is equivalent to the heat loss at the actual air temperature and under the actual wind speeds.

Wind shear-a rapid change in the direction or velocity of the wind. Z Zonal flow-a wind flow that is pretty much in a west to east direction. Temperatures stay fairly close to normal in a zonal flow.

wind shear—The rate of change of wind velocity (direction and/or speed) per unit distance; conventionally expressed as vertical or horizontal wind shear. X-Y-Z ...

Wind shear: the rate at which wind velocity changes from point to point in a given direction (as, vertically).

Wind A natural motion of the air, especially a noticeable current of air moving in the atmosphere parallel to the Earth's surface.

Wind Profiler This is a three beam Doppler Radar system aimed vertically to measure atmospheric winds at different altitudes over a station.

Wind- Air in motion relative to the surface of the earth. Wind Advisory- Issued for sustained winds 31 to 39 mph for at least 1 hour or any gusts 46 to 57 mph.

WIND - Movement of air. Speed is measured in Miles Per Hour (MPH), Knots (KTS), Meters Per Second (M/S), or Kilometers Per Hour (KM/H). A knot is about 1.15 MPH. WIND VANE - Weather instrument for measuring the direction of the wind.

A wind which blows up a valley during the day in quiet, clear conditions (see anabatic), the opposite at night being the mountain or katabatic wind which blows down into the valley. Veering: The action of the wind changing in a clockwise direction.

A wind blowing onshore from the surface of a lake. Lake-effect snows(6) ...

>> Wind: Basic requirement: The wind speed and direction in the first 30 metres or so of the atmosphere varies rapidly with height, due to the varying frictional effect of the general 'surface roughness'.

Gap Wind - Strong winds that are enhanced by the constriction of narrow passes in complex terrain. Turnagain Arm and the Matanuska Valley are two such gaps that enhance winds.

High Wind Warning: A high wind warning is defined as 1-minute average surface winds of 35 kt (40 mph or 64 km/hr) or greater lasting for 1 hour or longer, ...

Fall Wind - See Katabatic Wind. Fata Morgana - A mirage most frequently observed in coastal areas in which extreme towering occurs.

WAD- Wind Advisory WARM CORE HIGH- A dome of deep high pressure that originates from low latitude areas.

W1010 Wind force Number on a progressive scale (Beaufort scale) corresponding to the effects produced by winds within a range of speeds. Force exerted by the wind on a structure, object, etc.

Tail wind A wind blowing in the same direction as the heading of a moving object, thus assisting the object's intended progress. The opposite of a head wind.

Marine Wind Warnings - Small Craft Warning - issued if winds are forecast to be in the range of 20 to 33 knots inclusive. Gale Warning - issued if winds are forecast to be in the range of 34 to 47 knots inclusive.

BOULDER WIND A local name referring to an extremely strong downslope wind in the Front Range of the Rocky Mountains near Boulder, Colorado.

Gradient wind - Wind that flows parallel to the isobars, but non-linearly.

GRADIENT WIND A steady horizontal air motion along curved parallel isobars or contours in an unchanging pressure or contour field, assuming there is no friction and no divergence or convergence.

Sustained wind or frequent gusts to 35 miles an hour or greater; and Considerable falling and/or blowing snow (i.e., reducing visibility frequently to less than ¼ mile) ...

Katabatic wind Any wind blowing downslope. Usually cold. to top of page L Lake breeze A wind blowing onshore from the surface of a lake.

See also: Air, Weather, Surface, Temperature, Water