What typically characterizes a warm front?

A warm front is primarily characterized by the movement of warm, moist air that ascends over a mass of cooler air. The typical behavior of warm fronts is that they move slowly, often at speeds between 10 to 25 miles per hour. As the warm air rises, it cools, which can eventually lead to cloud formation and precipitation, but this process is generally gradual.

The choice indicating that warm fronts cause temperature to rise rapidly can be misleading, as the temperature increase is typically more gradual when a warm front passes through. When a warm front approaches, it often leads to extended periods of lighter precipitation and cloud coverage rather than the sudden and severe changes in temperature that can be observed with other types of fronts, such as cold fronts.

Warm fronts do not replace warm air with cold air but rather transition from a cooler air mass to a warmer one, making the description of replacing warm air with cold air inaccurate. While warm fronts can bring precipitation, they are not typically associated with severe thunderstorms, which are more characteristic of cold fronts.