Start studying Aviation Meteorology Thunderstorms. A squall line'is a narrw band of active thunderstorms. It often oontains steady-state . a. Squall Lines. Squall lines may contain severe thunderstorms. Search. Often it develops on or ahead of a mid front in moist, unstable air, but it may develop in unstable air far removed fran any front. squall line A narrow zone of meteorological activity usually parallel or nearly parallel to a cold frontal surface, occurring some distance away. The term is also used to describe a line of heavy precipitation with an abrupt wind shift but no thunderstorms, as sometimes occurs in association with fronts. Log in Sign up. Flight 250 continued ahead toward the line of thunderstorms, requesting a deviation to the left to avoid weather (Job, 1994, p. 55). A line of thunderstorms often located along or ahead of a vigorous cold front. Dry Line - a boundary separating moist and dry air masses. A squall line or quasi-linear convective system (QLCS) is a line of thunderstorms forming along or ahead of a cold front.In the early 20th century, the term was used as a synonym for cold front. Frontal thunderstorms, squall line thunderstorms, steady state thunderstorms, embedded thunderstorms, and air mass thunderstorms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Squall-line activity, or a line squall, is characterized by thunderstorms, heavy rain, brief wind shifts, gusty winds, abrupt … !Ihe line may be too long to detour easily and too wide and severe to penetrate. It suddenly encountered a severe gust of wind in the turbulent shear zone near the line of thunderstorms. Squall Line - a line of active thunderstorms, either continuous or with breaks, including contiguous precipitation areas resulting from the existence of the thunderstorms. The squall line is propelled by its own outflow, which reinforces continuous development of updrafts along the leading edge Squall lines tend to be hundreds of miles long These lines can move swiftly and in some parts of the line, bow echoes can form, bringing with it high winds, dangerous lightning, and possibly tornadoes Log in Sign up. Create. 51 terms.

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