What Is Backdoor Cold Front?
A cold front that sneaks in from the east or northeast instead of the usual west or northwest, often bringing a sudden chilly, damp change, especially in New England and the Mid-Atlantic. In technical terms: A cold front moving southward or southwestward, typically along the US East Coast or east of the Rockies, driven by a surface high to the north or northeast and often reinforced by marine air and cold-air damming.
Backdoor Cold Front In Plain English
A cold front that sneaks in from the east or northeast instead of the usual west or northwest, often bringing a sudden chilly, damp change, especially in New England and the Mid-Atlantic.
The Technical Definition
A cold front moving southward or southwestward, typically along the US East Coast or east of the Rockies, driven by a surface high to the north or northeast and often reinforced by marine air and cold-air damming.