WARM FRONT Definition & Meaning

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warm front

[ wawrm fruhnt ]

Phonetic (Standard)IPA

noun

Meteorology.

a transition zone between a mass of warm air and the colder air it is replacing.

warm front

noun

meteorol the boundary between a warm air mass and the cold air above which it is rising, at a less steep angle than at the cold front Compare cold front occluded front

warm front

The forward edge of an advancing mass of warm air that rises over and replaces a retreating mass of cooler air. As it rises, the warm air cools and the water vapor in it condenses, usually forming steady rain, sleet, or snow. On a weather map, a warm front is depicted as a red line with half circles whose curved sides point in the direction in which the warm air is moving.
Compare cold frontSee illustration at front

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�y��vlog History and Origins

Origin of warm front¹

First recorded in 1920–25

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How does warm front compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

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A warm front arrived across the Central Coast late Tuesday and will spread south into Los Angeles through the day Wednesday, bringing with it a sprinkling of moisture ahead of the brunt of the storm.

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Kayla Mazurkiewicz, a meteorologist with the weather service in Seattle, said it’s unclear whether or not the warm front is a sign of more warmer days to come, but she can’t rule it out either.

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Temperatures will trend upward as the workweek starts, too, with some areas hitting records as a warm front moves north from California to Canada.

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Meteorologists described the atmosphere early Wednesday as “a race between another warm front” arriving from the Pacific Coast, and an “upper level ridge” of colder air amassing to the east.

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The storm system is expected to move east and drag a warm front across the area Friday, followed by a cold front Friday evening into Saturday.

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