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Definition of Weather front

Babylon English

(Meteorology) zone of transition between two masses of air of different temperatures or different densities, place where two masses of air of different temperatures meet
Weather front Definition from Science & Technology Dictionaries & Glossaries
The sloping region where air of two different kinds meets. It is a place of cloud and rain. See also: cold front and warm front.
Weather front Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. In surface weather analyses, fronts are depicted using various colored triangles and half-circles, depending on the type of front. The air masses separated by a front usually differ in temperature and humidity. Cold fronts may feature narrow bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. Warm fronts are usually preceded by stratiform  precipitation and fog. The weather usually clears quickly after a front's passage. Some fronts produce no precipitation and little cloudiness, although there is invariably a wind shift.

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