occluded front. noun. meteorol the line or plane occurring where the cold front of a depression has overtaken the warm front, raising the warm sector from ground levelAlso called: occlusion.
What happens in an occluded front?
At an occluded front, the cold air mass from the cold front meets the cool air that was ahead of the warm front. The warm air rises as these air masses come together. Occluded fronts usually form around areas of low atmospheric pressure.
What type of weather comes with a occluded front?
Cold Occluded Front
Cold fronts are responsible for the strong, severe storms that can produce damaging winds, hail and tornadoes. The weather also tends to exhibit a dip in temperature prior to the storms and a drastic change in wind direction and speed.
Are occluded fronts stationary?
Warm Front – a transition zone between a mass of warm air and the cold air it is replacing. Stationary Front – a front between warm and cold air masses that is moving very slowly or not at all. Occluded Front – a composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front.
How do you identify an occluded front?
When a cold front overtakes a warm front, the fronts are said to be “occluded.” In early stages of occlusion, heavy rain and thunderstorms may follow a typical warm front pattern. The activity with the occlusion is usually relatively short-lived as it involves the rapid lifting of a finite mass of warm air.
What is occlusion in meteorology?
In meteorology, an occluded front is a type of weather front formed during cyclogenesis. The classical and usual view of an occluded front is that it initiates when a cold front overtakes a warm front near a cyclone, such that the warm air is separated (occluded) from the cyclone center at the surface.
What is an occluded front ks3?
Occluded fronts
These occur at the point where a cold front takes over a warm front or the other way around. If a cold front undercuts a warm front it is known as a cold occlusion and if the cold front rises over the warm front it is called a warm occlusion. Occluded fronts bring changeable weather conditions.
What describes a stationary front?
A stationary front is a weather front or transition zone between two air masses (cold and warm), when neither air mass is advancing into the other at a speed exceeding 5 knots at the ground surface.
How is an occluded front different from a cold front?
They form over water with cool, moist air. How is an occluded front different from a cold front? Warm air is pushed up during an occluded front, while cold air moves quickly during a cold front. Occluded fronts cause warm air to feel dry, while cold fronts cause ground temperatures to feel cooler.
How does an occluded front form?
The colder air behind the front undercuts and pushes up the air ahead of it. The other type of occluded front is the warm occlusion. A warm occlusion occurs when the cold air behind the occluded front is warmer than the air ahead of it.
What are the two types of occluded fronts?
Meteorologists differentiate between two types of occluded fronts:
cold-type occluded fronts (“cold occlusion”): the air behind the front is colder than the air in front of it.warm-type occluded fronts (“warm occlusion”): the air behind the front is warmer than the air in front of it.
