A warm front is a weather phenomenon that occurs when a warm air mass moves into an area occupied by cooler air. As the warm air rises over the cooler air, it cools and condenses, often leading to cloud formation and precipitation. This process typically results in gradual temperature increases and can bring extended periods of rain or drizzle. Warm fronts are usually associated with specific types of clouds, such as stratus and nimbostratus, which can cover large areas. The transition from cooler to warmer air can also lead to changes in wind direction and pressure, impacting local weather patterns and conditions.