Chart illustrating the four main types of weather fronts, including their names, symbols, and visual representations of air mass interactions.

- Cold Front: Blue line with triangles pointing in the direction of movement. Illustration shows cold air advancing and pushing warm air upwards.
- Warm Front: Red line with semicircles pointing in the direction of movement. Illustration shows warm air advancing over cold air.
- Occluded Front: Purple line with alternating triangles and semicircles pointing in the direction of movement. Illustration shows a cold front overtaking a warm front, lifting the warm air mass completely off the ground.
- Stationary Front: Alternating red semicircles and blue triangles on opposite sides of the line, indicating no significant movement. Illustration shows cold and warm air masses meeting but neither advancing significantly.