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instability line

Any nonfrontal line or band of convective activity in the atmosphere. It is a general term and includes the developing, mature, and dissipating stages. However, when the mature stage consists of a line of active thunderstorms, it is properly called a squall line; therefore, in practice, instability line often refers to the less active phases. See also pseudo front, prefrontal squall line.

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Penulis

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