Occluded front

Definition of Occluded Front

An occluded front, a specific weather front, emerges when a cold front surpasses a warm front, leading to the ascension of the warm air mass away from the earth's surface. This integration of front properties, termed as occlusion, typically engenders varied precipitation forms and precipitous changes in weather patterns.

Formation of Occluded Fronts

Cold Occlusion: A cold occlusion manifests when the encroaching cold front exhibits a lower temperature than the air preceding the warm front. Consequently, the cold air mass propels beneath the warm air mass, lifting it from the surface, and eventually converging with the cooler air along the trajectory of the warm front.

Warm Occlusion: Warm occlusions evolve when the advancing cold front is warmer than the air ahead of the warm front. Under these circumstances, the cold air mass navigates above the cooler air in front of the warm front, compelling the warm air mass upward while the cooler air persists in proximity to the surface.

Weather Associated with Occluded Fronts

Precipitation: Occluded fronts regularly bring about a diversity of precipitation, determined by the temperature profile of the atmosphere. The precipitation might commence as gentle to moderate rain or snow and escalate in intensity with the proximity of the front.

Winds: Wind patterns can undergo substantial changes during the passage of an occluded front. It can result in gusty winds and abrupt alterations in direction, leading to a quick drop in temperature and immediate transitions in weather conditions.

Clouds: Clouds corresponding with occluded fronts often comprise a composite of those linked with both warm and cold fronts. It may involve stratiform clouds, specifically nimbostratus and altostratus, as well as cumuliform clouds, including cumulus and cumulonimbus.

Occluded Fronts and Weather Forecasting

In order to deliver accurate weather predictions, meteorologists dedicate careful attention to the examination of occluded fronts. The study of the movement and evolution of occluded fronts enables them to forecast the commencement and intensity of precipitation, as well as the likelihood of swift weather changes.
Updated: May 29, 2023
Published by: Weather Atlas | About Us