Front

In meteorology, a front refers to the boundary between two air masses of different temperature, humidity, and/or density. Fronts are often associated with changes in weather conditions. There are several types of fronts, including cold fronts, warm fronts, stationary fronts, and occluded fronts. When a front passes through an area, it can bring about shifts in wind direction, changes in temperature, and alterations in cloud cover and precipitation patterns. Cold fronts occur when a cooler air mass replaces a warmer air mass, while warm fronts form when a warmer air mass advances over a cooler air mass. Stationary fronts indicate a boundary where two air masses are not moving, while occluded fronts occur when a faster-moving cold front overtakes a warm front. Fronts are important features in weather forecasting, as they can lead to the formation of storms and other weather phenomena.