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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

... whirling columns of water droplets that spiral up from a lake or sea [and that] frequently form under clear skies.  3, fiche 1, Anglais, - fair%20weather%20waterspout

Record number: 1, Textual support number: 1 CONT

Waterspouts form over (or move across) the coastal waters or intracoastal waters ... They are treated as tornadoes over water. There are two type of waterspouts: "fair weather" and "tornadic". Fair weather waterspouts are usually weaker, move slowly, and may not be associated with a thunderstorm. Tornadic waterspouts form within developing thunderstorms, or severe thunderstorms, and move much faster while being more intense.  4, fiche 1, Anglais, - fair%20weather%20waterspout

Record number: 1, Textual support number: 2 CONT

The most common type of waterspout is a fairweather waterspout, which arises over warm seas, e. g. near Florida. It lasts for only a few minutes. These waterspouts are generally of F0 intensity, with winds of no more than 30 m/s. They typically occur during the developing stage of an airmass thunderstorm, below the main updraft. These thunderstorms are found in weakly sheared environments, so the spin-up must result mainly from vortex stretching and less from vortex tilting.  2, fiche 1, Anglais, - fair%20weather%20waterspout

Record number: 1, Textual support number: 3 CONT

Fair weather waterspouts only form over water. ... The fair weather waterspouts are much more regular than tornadic waterspouts.  5, fiche 1, Anglais, - fair%20weather%20waterspout

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

La trombe marine véritable se forme au-dessus de l'eau et n'est pas accompagnée d'un violent orage. Si jamais un orage intense produisant une tornade passe au-dessus d'une masse d'eau, cette tornade présente autant de danger que sur terre. La différence entre la tornade et la trombe marine tient exclusivement aux conditions atmosphériques en présence dans le second cas. Si le temps est frais et nuageux et qu'il y a quelques averses mais pas d'orage comme tel, tout entonnoir ressemblant à une tornade qui pourrait se former au-dessus de l'eau est une trombe marine.  1, fiche 1, Français, - trombe%20marine

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

A downburst is a strong downdraft which induces an outburst of damaging winds on or near the ground. They are divided into macrobursts and microbursts according to the horizontal scale of the damaging wind field.  1, fiche 2, Anglais, - outburst%20of%20winds

Record number: 2, Textual support number: 2 CONT

The outbursting winds beneath the vortex ring accelerate as the ring expands and stretches. The very strong outflow wind boundary propagates outward rather slowly but with time the ring vortex reaches a stretching limit, weakens and disappears or breaks into small rotor vortices that move off by themselves and disappear.  1, fiche 2, Anglais, - outburst%20of%20winds

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

The outbursting winds beneath the vortex ring accelerate as the ring expands and stretches. The very strong outflow wind boundary propagates outward rather slowly but with time the ring vortex reaches a stretching limit, weakens and disappears or breaks into small rotor vortices that move off by themselves and disappear.  1, fiche 3, Anglais, - rotor%20vortex

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 OBS

Les mouvements tourbillonnaires purement horizontaux ont [...] une composante de vorticité purement verticale. Des mouvements atmosphériques en rouleaux d'axe horizontal, un cisaillement de vent horizontal, ou une variation horizontale du vent vertical ont une vorticite purement horizontale. On appelle «vortex», ou plus communément tourbillon, une région de forte vorticité; l'axe du vortex ou du tourbillon est la direction vers laquelle pointe le vecteur vorticité.  2, fiche 3, Français, - tourbillon%20en%20rouleaux

Fiche 3,  Justifications,  Espagnol