A cold front is a boundary that forms when a mass of cold air moves into an area occupied by warmer air. This transition often leads to a drop in temperature and can cause various weather changes, such as rain or thunderstorms. Cold fronts typically move quickly and can bring about sudden shifts in weather conditions. As the cold air pushes under the warm air, it forces the warm air to rise, which can create clouds and precipitation. The passage of a cold front is usually marked by a noticeable change in wind direction and a drop in humidity. Understanding cold fronts is essential for predicting weather patterns and preparing for potential storms.