In a warm occlusion , the air mass overtaking the warm front is warmer than the cold air ahead of the warm front .
In a warm occlusion , the air mass overtaking the warm front rides over the colder air mass while lifting the warm air .
In a warm occlusion , the air mass overtaking the warm front is warmer than the cold air ahead of the warm front and rides over the colder air mass while lifting the warm air .