Which visual symbol represents a warm front?

A warm front is represented by semicircles in meteorological symbols. This symbol indicates the transition zone where warm air is advancing and replacing cooler air. The semicircles are positioned on the side of the front that is moving forward, visually representing the movement of warm, moist air into an area, which is characteristic of warm fronts.

When warm air pushes into cold air, it rises over the colder, denser air, typically leading to gradual cloud formation and precipitation. Understanding this symbol is crucial for interpreting weather maps and forecasts, as warm fronts often bring changes in weather conditions such as increasing temperatures and prolonged, gentle rain.