Mesoscale Convective System (MCS) a large cluster of storms
The second satellite photo shows a huge anvil cloud arising from a large cluster of storms. This is called a mesoscale convective system or "MCS".
Mesoscale, is sub-Synoptic scale (that is larger than the Microscale).
Mesoscale is divided into these subclasses (Orlanski, 1975): ...
mesoscale eddies - See mode eddies.
mesoscale model - A model designed to simulate mesoscale atmospheric phenomena.
Mesoscale - Size scale referring to weather systems smaller than synoptic-scale systems but larger than storm-scale systems. Horizontal dimensions generally range from around 50 miles to several hundred miles.
Mesoscale: The middle of three scales used to describe the size range of atmospheric processes. The mesoscale covers the range from a few kilometres to a few tens of kilometres.
Mesoscale Discussions (MCD) When conditions actually begin to shape up for severe weather, SPC often issues a Mesoscale Discussion (MCD) statement anywhere from roughly half an hour to several hours before issuing a weather watch.
Mesoscale
Used to describe weather systems that lie in between synoptic scale and local scale. This generally means weather features that are between 25km and 250km in size.
MESOSCALE CONVECTIVE COMPLEX (MCC)
A large mesoscale convective system (MCS) which is about the size of the state of Ohio or Iowa and lasts at least 6 hours.
Mesoscale - A middle-sized event that usually is measured in 10's of miles and hours of time; a thunderstorm-sized phenomenon; e.g. thunderstorms and sea breeze circulations.
Mesoscale - a study of thunderstorms and similarly sized weather features. These things takes less than a day to pass, usually.
Meteorology - The science that studies the atmosphere.
Mesoscale The scale of meteorological phenomena that ranges in size from a few km to about 100 km. It includes local winds, thunderstorms, and tornadoes.
Mesoscale convective complex (MCC) A nearly circular organized cluster of many interacting thunderstorm cells covering an area of many thousands of square kilometers.
Mesoscale Convective System (MCS) This expression, often used by the National Weather Service, refers to a cluster of thunderstorms which is larger in scale than any individual cumulonimbus cloud, but smaller in scale than a frontal system.
2) Mesoscale (Sub-Synoptic Scale) Cyclone Type: This type develops in or near a dying frontal zone with horizontal wind shear.
MCV- Mesoscale Convective Vortex. It is an MCC or MCC-like grouping of storms that shows a mesoscale rotation.
MET- MOS output from ETA forecast model
MEX- MOS output from extended GFS forecast model ...
MESOSCALE - A scaling term for medium sized weather systems. May also be used as a MESO prefix with other types of words such as in MESOCYCLONE. Often depicts a size of a couple of miles to about a hundred miles. Sometimes called MID or MEDIUM SCALE.
A mesoscale area of high pressure, typically associated with cooler air from the rainy downdraft area of a thunderstorm or a complex of thunderstorms. A gust front or outflow boundary separates a bubble high from the surrounding air.
MCC: Mesoscale Convective Complex.
McIDAS: Man-Computer Interactive Data Access System.
MVRF: Marginal VFR Ceiling. Avaition.
METOR: Aviation Routine Weather Report.
(2) A mesoscale cyclone originating in or near a frontolyzing zone of horizontal wind shear, with radius of maximum sustained winds generally less than 30 miles.
Mesoscale - of or relating to meteorological phenomena approximately 2 to 200 kilometers in horizontal extent; thunderstorms and squall lines are two examples of mesoscale events ...
MCS- Mesoscale Convective System. A large cluster of thunderstorms and rain. Can be a squall line, multi-cells or a mesoscale convective complex.
MEASURABLE- Precipitation of 0.01" or more.
Storm and Mesoscale Ensemble Experiment
Sampling Frequency
The rate at which sensor data is read or sampled.
Storm and Mesoscale Ensemble Experiment
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Left Mover, Right Mover, Splitting Storm, Storm, Storm Scale, Storm Tracking Information ...
mesojet"A mesoscale wind maximum. It typically may have an along-flow length scale of tens to hundreds of kilometers and a cross- flow length scale of < 100 km.
Also used for short duration mesoscale events such as a strong cold front, gravity wave, squall line, etc., lasting less than 2 hours and producing winds or gusts of 34 knots or greater.
MCSMesoscale Convective System. Mesoscale Convective System. A complex of thunderstorms which becomes organized on a scale larger than the individual thunderstorms, and normally persists for several hours or more.
MESOSCALE The scale of meteorological phenomena that includes MCCs, MCSs, and squall lines. These weather systems may cover fifty to several hundreds of miles. Smaller phenomena are classified as storms, while larger are classified as synoptic-scale.
It is important in the development of Mesoscale Convective Complexes (MCC) or Mesoscale Convective Systems (MCS).Nocturnal ThunderstormsThunderstorms which develop after sunset.
Mesonet A regional network of observing stations (usually surface stations) designed to diagnose mesoscale weather features and their associated processes.
Dry Punch[Slang], a surge of drier air; normally a synoptic-scale or mesoscale process. A dry punch at the surface results in a dry line bulge.
The serious tornado is aided by rotation aloft, especially at the edges of large mesoscale rotating convective storms. Again, centrifugal force aids the formation of a core of low pressure that hurries air upwards.
A second type of subtropical cyclone is a mesoscale low originating in or near a frontolyzing zone of horizontal wind shear, with radius of maximum sustained winds generally less than 30 miles.
NAM (North American Mesoscale) - One of the operational forecast models run at NCEP. The NAM is run four times daily, with forecast output out to 84 hours over the Northern Pacific. The current operational run has a horizontal resolution of 12 km.
DRY PUNCH
A surge of drier air; normally a synoptic-scale or mesoscale process. A dry punch at the surface results in a dry line bulge. A dry punch aloft above an area of moist air at low levels often increases the potential for severe weather.
frequent reversals of this 'normal' lapse are observed, particularly in the lower layers - these zones of increasing temperature with height are inversions (i.e. the inverse of the average state), and are very important for both synoptic/mesoscale ...
mesoscale eddies (mode eddies) In the ocean, dense and irregularly-oval high- and low- pressure centers about 400 km in diameter. The intensities of currents in these centers are about 10 times greater than the local means.
DRY SLOT An area of dry, and usually cloud-free, air that wraps into the southern and eastern sections of a synoptic scale or mesoscale low pressure system. Best seen on a satellite picture, such as a water vapor image.
In weather analysis and forecasting, it usually refers to the vertical component of rotation (i.e. rotation about a vertical axis) and is used most often in reference to synoptic scale or mesoscale weather systems.
BSBlowing SnowBTRBetterBTWNBetweenBubble HighA mesoscale area of high pressure, typically associated with cooler air from the rainy downdraft area of a thunderstorm or a complex of thunderstorms.
 See also: Weather, Cloud, Air, Temperature, Storm
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