cold-front clearance

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cold-front clearance Clearing of the sky after the passage of a cold front, the cold air displacing the warm, moist air of the warm sector as a depression moves away. The process is usually marked by a veering of the wind (in the northern hemisphere, backing in the southern hemisphere), rising pressure, and a fall in temperature. The clearing of the cloud may be partly due to some subsiding motion in the upper layers behind the front.

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