A cold front that leads a cold air mass toward the south and southwest along the Atlantic seaboard of the United States.
This is one of the occurrences to which New Englanders give the name sea turn, for the cold wind following a backdoor cold front blows from the northeast quadrant.
Any nonoccluded front, or portion thereof, that moves so that the colder air replaces the warmer air; that is, the leading edge of a relatively cold air mass.
Any nonoccluded front, or portion thereof, that moves so that the colder air replaces the warmer air; that is, the leading edge of a relatively cold air mass.
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