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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Cloud system, usually not associated with a depression, and the formation of which is largely caused by convection and instability effects.  4, record 1, English, - thundery%20cloud%20system

Record number: 1, Textual support number: 1 CONT

Active thundery systems - probably in 3 waves - bring heavy rain and some flash flooding esp. in the south. Tropical storm remnants or after-effects are expected in this period.  2, record 1, English, - thundery%20cloud%20system

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Système nuageux, habituellement non associé à une dépression caractérisée, et dont la formation est due pour une large part aux phénomènes de convection et d'instabilité.  2, record 1, French, - syst%C3%A8me%20orageux

Record number: 1, Textual support number: 1 CONT

Le système nuageux orageux [...] se manifeste principalement au printemps et en été lorsque de l'air humide, d'origine maritime, stagne dans une zone à faible gradient barométrique. L'air se réchauffe alors, de jour, par l'intermédiaire du sol déclenchant, dans certaines conditions de profil thermique de l'atmosphère, de puissants mouvements convectifs générateurs de cumulonimbus orageux qui se développent alors de façon aléatoire dans un vaste secteur, par exemple la moitié sud de la France.  3, record 1, French, - syst%C3%A8me%20orageux

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Sistema nuboso formado no asociado a una depresión caracterizada y cuya formación se debe en gran parte a fenómenos de convección e inestabilidad.  1, record 1, Spanish, - sistema%20nuboso%20de%20tormenta

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

An issue of considerable interest is the so-called multicellular thunderstorm system, as opposed to supercells, which are often presumed to be unicellular. A form of multicellular convection that has already been simulated extensively is the squall line. The typical method for simulating this form of deep line-oriented convection has been to release a number of laterally-aligned IB's. After the initial storms develop, their outflows merge, producing a line of convection resembling a squall line. Squall lines are not the only type of multicellular convection observed, however. In isolated multicell storms, a succession of updrafts is typical.  1, record 2, English, - multicellular%20thunderstorm%20system

Record number: 2, Textual support number: 1 OBS

Thunderstorms are often classified into a spectrum based on their cell structure: single cells, multicellular storms, and supercells. The type of storm depends on the instability and relative wind conditions at different layers of the atmosphere (shear). The "single-cell" (unicell) thunderstorm is [a] three-stage situation ... usually lasting about 30 minutes from the start of significant precipitation. A severe unicell storm is often referred to as a pulse thunderstorm. ... In a multicell thunderstorm, several thunderstorm cells merge into a larger system. The cloud becomes divided into updraft and downdraft regions separated by a gust front. The gust front may extend for several miles ahead of the storm, bringing with it increases in wind speed and atmospheric pressure, decreases in temperature, and shifts in wind direction. The storm itself will have different portions sequentually going through the various thunderstorm stages. In many cases the immature cells develop along a line known as a "flanking line," resulting in what is known as a line multicell.  6, record 2, English, - multicellular%20thunderstorm%20system

Record number: 2, Textual support number: 2 OBS

storm system: Often refers to "thunderstorm system" (in French: "système orageux"), which is a frequent type of storm system but not the only one; an elliptic form which can be used when there is no risk of ambiguity.  3, record 2, English, - multicellular%20thunderstorm%20system

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish