Occluded Front: A transition zone in the atmosphere where an advancing cold air mass sandwiches a warm air mass between another cold air mass pushing the warm air into the upper atmosphere.
It is a developing cyclone usually has a previous heat front (the main edge of a heat wet air mass) and a quicker transferring bloodless fronts (the main fringe of a colder drier air mass wrapping across the storm). North of the nice and cozy front is a mass of cooler air that turned into in location earlier than the typhoon even entered the area. While this takes place, the warm air is separated (occluded) from the cyclone center on the Earth’s floor.
Occluded fronts generally form around mature low-pressure areas. There are two types of occlusion, warm and cold:
- In a cold occlusion, the cold air mass overtaking the warm front is colder than the cool air ahead of the warm front and plows under both air masses.
- In a warm occlusion, the cold air mass overtaking the warm front is warmer than the cool air ahead of the warm front and rides over the colder air mass while lifting the warm air.