A cold front is defined as the leading-edge of a cooler mass of air, which moves forward as a front and replaces a warmer mass of air (at ground level) by ...
What is a Cold Front? A cold front occurs at the leading edge of a cold air mass that is moving to replace a warmer air mass. Diagram showing a cold front.
A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough of ...
Fronts are usually hundreds of miles long. A cold front forms when a cold, dense air mass pushes under a warm, lighter air mass, forcing the warm air to rise.