A stationary front is a weather pattern that occurs when two air masses meet but neither is strong enough to replace the other. This results in a boundary that can remain in place for an extended period, often leading to prolonged periods of cloudy weather and precipitation. The air masses involved are typically different in temperature and humidity, which can create various weather conditions along the front. Stationary fronts can be identified on weather maps as a line with alternating blue triangles and red semicircles. They can lead to the development of clouds and rain, as the warm air rises over the cooler air, causing condensation. Understanding stationary fronts is essential for meteorologists when predicting weather changes.