Why do cold fronts cause sudden changes in weather?

Answer 1

"Weather" is caused when water vapor, evaporated by a warm front, hits a cold front, which causes it to condense into rain. A storm is formed when when a thermal, an area (such as a city) that reflects a large amount of the sun's heat back into the atmosphere, creating a column of warm air. Since, warm air has a lower pressure than cool air, a "low pressure area" is created. This area, literally, sucks in surrounding water vapor creating a dense system of multi-layered clouds, and when it is hit by a cold front, you have a storm.

Answer 2

A cold front is a transitional zone where a cold air mass is replacing a warm air mass.

A cold air mass is heavier than a warm air mass therefore the warm air mass is lifted above the cold air mass and causes the weather closer to the earth to be cooler.

The warm air mass that raises above the cold air mass condenses and forms clowds that are capable of producing some form of precipitation.

Cold fronts normally travel from the northwest to the south east.

Answer 3

Cold fronts cause sudden changes in weather because they occur when a cold air mass advances and replaces a warmer air mass. As the cold air moves in, it forces the warm air to rise rapidly, creating instability in the atmosphere. This rapid lifting of air can lead to the development of thunderstorms, strong winds, and temperature drops.

Answer 4

Warm moist air is being lifted over cold dry air behind the front. This lifting saturates the air, creates clouds, and makes precipitation.