What occurs during an occlusion?

During an occlusion, a cold front catches up with a warm front, which is described in option C. This meteorological phenomenon typically occurs in mid-latitude cyclones when the cold air behind the cold front moves faster than the air mass ahead of the warm front. As the cold front overtakes the warm front, the warm air mass is forced upward over the colder air masses. This upward motion can lead to the development of clouds and precipitation, characteristic of occluded fronts.

In this context, understanding occlusions is vital because they significantly influence weather patterns, often intensifying storm systems and leading to complex weather scenarios.