Multiple Vortex Tornado
A tornado that contains more than one vortex rotating around the main, central circulation.
multiple tropopause"A frequent condition in which the tropopause appears not as a continuous single "surface" of discontinuity between the troposphere and stratosphere but as a series of quasi-horizontal "leaves" that are partly overlapping in ...
Multiple vortex tornado
(or Multi-vortex tornado) a tornado in which two or more condensation funnels or debris clouds are present at the same time, often rotating about a common centre or about each other.
Multiple Doppler Analysis: The use of more than one radar (and hence more than one look angle) to reconstruct spatial distributions of the 2D or 3D wind field, which cannot be measured from a single radar alone.
Multiplexer A device that combines several separate communications signals into one and outputs them on a single line.
Multiple predictions from an ensemble of slightly different initial conditions and/or various versions of models.
MULTIPLE VORTEX - Term applied to a tornado containing multiple smaller vortices within the main vortex.
NADER - Slang name given to TORNADO. Comes from the southern or country accent applied to the word.
A multiple-vortex tornado had just dissipated from beneath this distant updraft, and an opaque precipitation shaft was developing in the previously rain-free area where the tornado occurred.
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Radar MosaicA radar product that combines information from multiple radars to give a regional or national view of reflectivity or precipitation. An individual NEXRAD radar is limited to a range of about 200 miles.
terms, a sudden eruption of energy on the solar disk lasting minutes to hours, from which radiation and particles are emittedFlashA sudden, brief illumination of a conductive channel associated with lightning, which may contain multiple strokes ...
Particle Trajectory ModelA computer sub-model that tracks the trajectories of multiple particles that are released into an atmospheric flow model.Partly CloudyBetween 3/8 and 5/8 of the sky is covered by clouds.
Multiple register A chronograph used to make a time-record of certain measured meteorological elements.
BroadbandA method of signaling in which multiple signals share the bandwidth of the transmission by the subdivision of the bandwidth into channels based on frequency.
Ensemble ForecastMultiple predictions from an ensemble of slightly different initial conditions and/or various versions of models.
There may be multiple updraft and downdraft segments, highly variable rates of rainfall, and some moderate hail. These systems may last for hours and produce flash flooding or weak tornadoes.
Multiple vortices usually form, twisting around one another to produce awesome variations of pressure and wind velocity over very small distances.
Data from several radar scans at multiple angles are combined to form a composite image that approximates a cross section through the atmosphere at a constant altitude.
A computer sub-model that tracks the trajectories of multiple particles that are released into an atmospheric flow model.
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The International System of Units prescribes the symbols and prefixes shown in the table to form decimal multiples and submultiples of SI units. The following examples illustrate the use of these prefixes: 0.
Tornado Watch- A Tornado Watch outlines an area where large hail and damaging wind threats, as well as the possibility of multiple tornadoes are possible.
contouring circuit—On weather radar, a circuit which displays multiple contours of echo intensity simultaneously on the plan position indicator or range-height indicator scope. See contour (2).
Lightning never stikes twice in the same place is false. Many flashes of lightning are of the multiple variety and strike many times in a few seconds. Tall towers often receive many strikes during thunderstorms.
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Several suction vortices typically are present in a multiple-vortex tornado. Much of the extreme damage associated with violent tornadoes (F4 and F5 on the Fujita scale) is attributed to suction vortices.
Some student worksheets have information that provides students with the solutions to questions. You may want to remove that section before you make multiple copies for student use (you could cover it during photocopying).
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Cyclic storm - A thunderstorm that undergoes cycles of intensification and weakening (pulses) while maintaining its individuality. Cyclic storms are capable of producing multiple tornadoes and/or several bursts of severe weather.
REPEATABILITY: The degree of agreement between a sensor's output values in response to the same input value when this same input condition is presented multiple times. The repeatability is usually expressed as a percentage of full scale range (i.
Cyclic supercells are capable of producing multiple tornadoes (i.e., a tornado family) and/or several bursts of severe weather. A storm which undergoes only one cycle (pulse), and then dissipates, is known as a pulse storm.
LEWP - Line Echo Wave Pattern. A feature within a line of storms that resembles a wave with a mesolow at the crest of this feature. Often associated with multiple bowing segments within a larger squall line.
In meteorology, the signal from a weather radar unit is reflected and scattered from precipitation particles (rain, hail, snow) to determine the location, height and intensity of precipitation areas; comparison of multiple radar echoes permits ...
It has become apparent that the tropopause consists of several discrete, overlapping "leaves," a multiple tropopause, rather than a single continuous surface. In general, the leaves descend, step-wise, from the equator to the poles.
Multiple-vortex tornadoes can be especially damaging.MushroomA thunderstorm with a well-defined anvil rollover, and thus having a visual appearance resembling a mushroom.Night, overnightSunset to sunrise.
MULTICELL STORM A thunderstorm made up of two or more single-cell storms. MULTIPLE VORTEX TORNADO A tornado which has two or more condensation funnels or debris clouds, often rotating around a common center.
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 See also: Weather, Air, Surface, Temperature, Cloud
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