Blowing

Blowing Dust Bear's Cage [Slang], a region of storm-scale rotation, in a thunderstorm, which is wrapped in heavy precipitation. This area often coincides with a radar hook echo and/or mesocyclone, especially one associated with an HP storm.

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 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 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 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.

Blowing Snow - wind-driven snow that reduces visibility near the ground. Blowing snow can be falling snow or snow that has already accumulated but is picked up and blown by strong winds.

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—A type of lithometeor composed of dust particles picked up locally from the surface and blown about in clouds or sheets.

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 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 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.

BNBlowing Sand BNDRYBoundary BombPopular expression of a rapid intensification of a cyclone (low pressure) with surface pressure expected to fall by at least 24 millibars in 24 hour.

B0950 Blowing dust Blowing sand Dust (sand) raised by the wind to moderate heights above the ground sensibly reducing the horizontal visibility at eye level. B0960 Blowing sand (B0950) ...

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

The wind blowing from east to west, (high to low pressure) causes the warm surface water to also move from east to west.

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 in a direction opposite to the course of a moving object. Often used when referring to winds affecting ballistics.

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.

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.

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.

Fire wind: a wind blowing radially inward toward a fire, produced by horizontal temperature differences (and thus pressure differences)between the heated air above the fire and the surrounding cooler free atmosphere.

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.

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.

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.

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.

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.

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! ...

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.

* The side away from the direction the wind is blowing from. Fig.1 Air is forced to flow against and over a mountain range in a short period of time. The air cools as it rises up the mountain range, cloud forms and rain or snow falls.

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.

WIND DIRECTION The direction from which the wind is blowing. For example, an easterly wind is blowing from the east, not toward the east.

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.

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.

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 - A local wind blowing from the land toward the sea during the night in coastal areas. La Nifia - An episode of strong trade winds and unusually low sea-surface temperatures in the central and eastern Pacific. The opposite of El Niflo.

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.

Sea breeze: a 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.

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.

(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 wind A 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.) ...

pattern; visible signs may include a cumulus cloud or small Cb with a high base and high-level virga, or perhaps only an orphan anvil from a dying rain shower. At the ground, the only visible sign might be a dust plume or a ring of blowing dust ...

Upwind Weather: The direction from which the wind is blowing. Also the windward side of an object. The opposite of the downwind or leeward side.

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