Microbursts downburst less than 2.5 miles in diameter
A downburst is a strong downdraft which includes an outburst of potentially damaging winds on or near the ground. If the diameter of the downburst is less than 2.
Microbursts are recognized as capable of generating wind speeds higher than 75 m/s (168 mi/h).
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Danger to aircraft ...
Microburst: The microburst is a downburst which is confined to a small area, less than 4 km (2.5 miles) in diameter from the initial point of downdraft impact and lasting for less than 10 minutes.
Microburst - an intense downdraft (downburst) less than 4 km wide (about 2.5 miles) that may occur beneath a thunderstorm
Microclimate - the essentially uniform local climate of a usually small site or habitat ...
Microburst One of 2 categories of downbursts (the other category is called a macroburst). This downburst has an affected outflow area of less than 2.5 miles wide and peak winds lasting less than 5 minutes.
Microburst
A small, concentrated downburst affecting an area less than 4 kilometres across. Most microbursts are rather short-lived (5 minutes or so), but on rare occasions they have been known to last up to 6 times that long.
Microscale ...
MICROBURST
A severe localized wind blasting down from a thunderstorm. It covers an area less than 2.5 miles (4 kilometers) in diameter and is of short duration, usually less than 5 minutes.
MICROBURST: A strong localized downdraft from a thunderstorm with peak gusts lasting 2 to 5 minutes.
MILLIBAR: A unit of atmospheric pressure. 1 mb = 100 Pa (pascal). Normal surface pressure is approximately 1013 millibars.
MICROBURST- A 4 kilometer diameter or less downdraft of air that sinks due to strong negative buoyancy.
MICROBURST - Small downbursts, less than 2.5 miles in outflow diameter, with peak winds lasting 2 to 5 minutes. They may induce dangerous wind and downflow wind shears which can affect aircraft performance.
Microburst A strong localized downdraft less than 4 km wide that occurs beneath severe thunderstorms. A strong downdraft greater than 4 km across is called a downburst.
Microburst A downburst that affects a path on the ground that is 4.0 km (2.5 mi) or shorter.
Microscale system The smallest spatial subdivision of atmospheric circulation, such as a tornado. ...
Microburst - A small downdraft of air with an outflow diameter of less than 2.5 miles with the peak winds lasting from 2 to 5 minutes. May affect aircraft performance.
Dry Microburst - A microburst with little or no precipitation reaching the ground; most common in semi-arid regions. They may or may not produce lightning.
Microburst- A downburst from a thunderstorm that is confined to a small area.
Mid-Latitudes- The areas in the northern and southern hemispheres between the tropics and the Arctic and Antarctic circles.
MICROBURST - A violent sinking of a parcel of air in the atmosphere, commonly associated with thunderstorm downdraft regions. When such a downdraft hits the ground it spreads out forming a brief and violent wind gust, which can be very destructive.
Wet MicroburstA microburst accompanied by heavy precipitation at the surface. A rain foot may be a visible sign of a wet microburst.Wet-Bulb TemperatureThe lowest temperature that can be obtained by evaporting water into the air.
MicroburstA convective downdraft with an affected outflow area of less than 2½ miles wide and peak winds lasting less than 5 minutes.
TERMINAL DOPPLER WEATHER RADAR (TDWR) Doppler radar installed at major airports throughout the United States to detect microbursts. TERRESTRIAL RADIATION Long wave radiation that is emitted by the earth back into the atmosphere.
It is a visual indication of a wet microburst.Rain ForestA forest which grows in a region of heavy annual precipitation. There are two major types, tropical and temperate.
Doswell III, 1989: Microbursts - A Handbook for Visual Identification. NOAA, Environmental Research Laboratories, National Severe Storms Laboratory.
Doswell, Charles A. III, 1982: The Operational Meteorology of Convective Weather.
com graphic shows what a microburst is. While the graphic shows what a microburst can do to an airplane that's taking off or landing and much of the research into microbursts was prompted by the danger to aviation, ...
In certain cases, shafts of virga may precede a microburst.FANAVN MOS Guidance (older version)FanningA pattern of plume dispersion in a stable atmosphere, in which the plume fans out in the horizontal and meanders about at a fixed height.
32 Wind: Microbursts. A downburst the affects a path on the ground shorter that 2.5 miles. 33 Wind: Monsoon. Change in wind direction. 34 Wind: Mountain Breeze. Nighttime. Cold. 35 Wind: Mountain Waves. Rotor Winds 36 Wind: Mt.
Downburst - a strong burst of wind from a thunderstorm, also called a microburst.
Drizzle - liquid water precipitation in the form of tiny droplets, much smaller and slower moving than raindrops.
It appears as wisps or streaks of rain or snow falling out of a cloud. As the precipitation evaporates, it cools the air and starts a down draft. In certain cases, shafts of virga may precede a microburst; see dry microburst.
Dust
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: AFTN, Dry Microburst, Dust Devil, Dust Plume, Dust Whirl, Fugitive Dust, Whirlwind
Also listed in ...
macroburst"A downburst on the misoscale. Bow echoes are often associated with macrobursts. See also microburst.
previous ...
Same as Virga; streaks or wisps of precipitation falling from a cloud but evaporating before reaching the ground. In certain cases, shafts of virga may precede a microburst.
FAN
AVN MOS Guidance (older version) ...
He has cirrus cloud for hair and ice crystal dandruff. His feet are made from strata cloud. One leg is a tornado and the other is a heavy down pour of rain (microburst).
DOWNBURST A severe localized downdraft from a thunderstorm or shower. This outward burst of cool or colder air creates damaging winds at or near the surface. Sometimes the damage resembles tornadic damage. Related term: microburst ...
microburstAn intense, localized downdraft of air that spreads on the ground, causing rapid changes in wind direction and speed; a localized downburst.
 See also: Storm, Cloud, Thunder, Thunderstorm, Air
  
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