what is warm ,cold , stationary fronts
Cold fronts are represented by blue triangles on a weather map, and stationary fronts are represented by interchanging the symbols for warm and cold fronts on weather maps. Warm Front. A warm front is the surface boundary between a warm air mass and a cold air mass it is overtaking. The warm air moves into an area of colder, drier air. The air masses do not readily mix; therefore the warm air rises slowly over the colder air because it is less dense.