blowing dust"Dust picked up locally from the surface of the earth and blown about in clouds or sheets. It is classed as a lithometeor and is encoded BLDU as an obstruction to vision in an aviation weather observation (METAR).
BLOWING DUST: Reduction of visibility by strong winds blowing across dry ground with little or no vegetation. Visibilities of 1/8 mile or less over a widespread area are criteria for a Blowing Dust Advisory.
blowing snow - Snow lifted from the surface of the earth by the wind to a height of 2 m (6 ft) or more above the surface (higher than drifting snow), ...
BLOWING DUST OR SAND - Small particles of dust or sand which are caused by strong winds blowing over dry ground, that has little or no vegetation.
BLOWING SNOW - Wind-driven snow which reduces surface visibility.
Blowing Dust- dust that is raised by the wind to moderate heights above the ground to a degree that horizontal visibility decreases to less than seven miles.
Blowing Snow- wind blown snow that reduces horizontal visibility.
Blowing Snow
Snow raised by the wind to moderate heights above the ground reducing the horizontal visibility at eye level.
Blowing Snow: Snow lifted off the surface by the wind to a height of 6 or more feet and blown about in sufficient density to restrict visibility.
C ...
BLOWING DUST Dust that is raised by the wind to heights of six feet or greater. It is reported as "BLDU" in an observation and on the METAR.
blowing dust—A type of lithometeor composed of dust particles picked up locally from the surface and blown about in clouds or sheets.
Blowing Dust (BLDU) Wind-driven dust that significantly reduces surface visibility to less than 7 miles.
Blowing Snow (BLSA) Wind-driven sand that significantly reduces surface visibility to less than 7 miles.
Blowing
A descriptor used to amplify observed weather phenomena whenever the phenomena are raised to a height of 6 feet or more above the ground
Blowing Dust or Sand ...
Blowing Snow Advisory - Issued when wind driven snow reduces surface visibility, possibly, hampering traveling. Blowing snow may be falling snow, or snow that has already accumulated but is picked up and blown by strong winds.
BLOWING SNOW: Wind-driven snow that reduces visibility near the ground. Blowing snow can be either falling snow or snow that has already accumulated but is picked up and moved by strong winds.
Blowing Snow Advisory - When wind driven snow reduces the surface visibility causing dangerous driving conditions. Blowing snow can be falling or snow that has already accumulated on the ground but is picked up and blown by strong winds.
A wind blowing onshore from the surface of a lake.
Lake-effect snows(6) ...
Why did blowing into the bottle remove the egg?
Explanation
As the air was heated, it began to expand. Some of the air escaped causing the egg to wobble. When the flames went out, the air began to cool and contract. The egg sealed the bottle.
The wind blowing from east to west, (high to low pressure) causes the warm surface water to also move from east to west.
Snow and Blowing Snow Advisory: This product is issued by the National Weather Service during situations that cause significant inconveniences, ...
Falling and/or blowing snow with winds exceeding 30 knots, temperatures below -7°C and visibility less than 400m for more than 3 hours.
Blocking high ...
UPSLOPE - Winds blowing up an incline, such as a mountain or from lower to higher terrain. It often causes storms to develop because air is lifted upward until it rises by itself, initiating convection, as the LFC is reached.
HEADWIND - A wind blowing directly into the nose of the aircraft.
HIGH PRESSURE SYSTEM - An area of high atmospheric pressure which generally means good visibility for flying.
BlizzardIncludes winter storm conditions of sustained winds or frequent gusts of 35 mph or more that cause major blowing and drifting of snow, reducing visibility to less than one-quarter mile for 3 or more hours.
See blowing spray as a factor in visibility at sea and as a possible condensation nuclei. SEA SURFACE TEMPERATURE (SST) The temperature of the water's surface.
Gap WindsStrong winds channeled through gaps in the Pacific coastal ranges, blowing out into the Pacific Ocean or into the waterways of the Inside Passage.
Therefore, strong winds blowing strictly from left to right or from right to left, relative to the radar, can not be detected.)RadianceA measure of the intensity of the radiant energy flux emitted by a body in a given direction.
Fire WindA thermally driven wind blowing radially inward toward a fire, produced by horizontal temperature differences between the heated air above the fire and the surrounding cooler free atmosphere.
Magnetic wind direction The direction, with respect to magnetic north, from which the wind is blowing. Distinguish from true wind direction. Magneto anemometer A cup anemometer with its shaft mechanically coupled to a magneto.
Drifting snow is usually associated with blowing snow.DrizzlePrecipitation consisting of numerous minute droplets of water less than 0.5 mm (500 micrometers) in diameter.
Lake BreezeA thermally produced wind blowing during the day from the surface of a large lake to the shore, caused by the difference in the rates of heating of the surfaces of the lake and of the land.
SESoutheastSea BreezeA thermally produced wind blowing during the day from a cool ocean surface onto the adjoining warm land, caused by the difference in the rates of heating of the surfaces of the ocean and of the land.
Is the snow drifting or blowing? Some types of snow will drift more that others - note whether snow is drifting after having earlier fallen, or is blowing around as it falls. In blizzard conditions the distinction will not always be clear.
CFCs include refrigerants, propellants for spray cans (this usage is banned in the U.S., although some other countries permit it) and for blowing plastic-foam insulation, styrofoam packaging, and solvents for cleaning electronic circuit boards.
Upper level winds near cloud summit were blowing from west to east (left to right) at 130 MPH. Surface winds were from the south at 20 MPH, indicating over 100 MPH of shear through the cloud layer! ...
The direction from which the wind is blowing.
Wind Rose
Any one of a class of diagrams designed to show the distribution of wind direction experienced at a given location over a considerable period; it thus shows the prevailing wind direction.
Chinook - Chinooks occur when a mountain range is exposed to a strong winds blowing at right angles, or near right angles to the direction of the mountain ridge.
When a wind is blowing, a laminar boundary layer is formed near the surface which is dominated by the molecular viscosity of the air. There is a relatively large velocity gradient in this layer, but it is not very thick.
No matter which direction the winds are blowing, they are always off the water, thus making Florida the place most often struck by lightning in the United States, and one of the most on Earth.
Wind Direction - the direction from which the wind is blowing
Wind Shear - the local variation of the wind speed and/or direction in a given direction.
According to the National Weather Service, some of the obstructions to visibility include blowing and widespread dust, fog (including freezing fog and patchy fog), haze, mist, sand and blowing sand, smoke, blowing spray, and volcanic ash.
A narrow band of winds blowing high in the troposphere at speeds in excess of 60 miles per hour but can reach speeds in excess of 300 miles per hour. Typically thousands of kilometres long, hundreds of kilometres wide and a few kilometres deep.
Also issued when visibilities from blowing snow or a combination of snow and blowing snow will be reduced to 1/4 mile or less.
Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure difference is proportional to the square of the wind speed.
Lake breeze A wind blowing onshore from the surface of a lake.
Lake-effect snows Localized snowstorms that form on the downwind side of a lake.
Haugull This is not a type of seabird, but a Scottish term used to describe a cold, damp wind blowing from the sea. This type of wind often brings either fog, rain or mist. The literal meaning of this word is a "gray coastal meadow.
sea breeze: wind blowing from the ocean to land at the coast, due to the cool air replacing the warmer air that has moved up on the coastline.
sea level: the imaginary line from which sea depth and land elevation are measured.
Jet Stream- A narrow band of winds blowing high in the troposphere at speeds in excess of 57 miles per hour or greater.
Kelvin Temperature Scale- A temperature scale in which 0 degrees is the point at which all molecular motion ceases (absolute zero).
The waves initially formed by the action of wind blowing over the sea surface. Wind waves are characterised by a range of heights, periods and wave lengths.
Land breeze - night wind blowing across a beach onto the water. Sea breeze - midday wind blowing across a beach onto the land. Both of these winds blow on the warmer surface.
Upwelling results when winds blowing nearly parallel to a continental coastline transport the light surface water away from the coast.
HEADWIND: A wind blowing in a direction opposite to the course of a moving object. Often used when referring to winds affecting ballistics.
Frictional force: The resistive force caused by wind blowing over the Earth's surface.
Frontal lifting: The forced lifting of warm, less dense air over colder air in the vicinity of a front.
Country Breeze - A circulation pattern characterized by a light wind blowing into a city from the surrounding countryside. It is best developed on clear and otherwise calm nights when the urban heat island is most pronounced.
Blizzard warning Issued when falling or blowing snow is accompanied by winds of over 55 km (35 mi) per hour and reduced visibility.
Stationary front A front that is nearly stationary with winds blowing almost parallel and from opposite directions on each side of the front.
Station pressure The actual air pressure computed at the observing station.
(Blowing dust and rising temperatures also may follow, especially if the dry line passes during the daytime; see dry punch). These changes occur in reverse order when the dry line retreats westward.
duststorm: when strong winds blow over a dusty area, blowing the dust into the air and reducing visibility significantly.
STREAMLINES- Arrows showing wind speed and direction. The head of the arrow points toward where the wind is blowing and the length of the arrow is proportional to the wind speed. Sometimes shows wind direction and trajectory only.
True Wind: Direction, relating to true north, from which the wind is blowing.
geostraphic windA theoretical horizontal wind blowing in a straight path, parallel to the isobars or contours, at a constant speed. The geostrophic wind results when the Coriolis force exactly balances the horizontal pressure gradient force.
(The component of motion perpendicular to the beam cannot be seen by the radar. Therefore, strong winds blowing strictly from left to right or from right to left, relative to the radar, can not be detected.) ...
 See also: Air, Wind, Weather, Surface, Temperature
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