What happens when cold front meets warm front?
When a cold front overtakes a warm front, it creates what’s called an occluded front that forces warm air above a frontal boundary of cooler air masses.
What type of weather does a fast moving cold front bring?
They move fast, up to twice as fast as a warm front. Cold air is dense so it is able to quickly plow a warm air mass ahead of it. Commonly, when the cold front is passing, winds become gusty; there is a sudden drop in temperature, and heavy rain, sometimes with hail, thunder, and lightning.
What front is created from a warm front and a cold front meeting up?
The cold front overtakes the warm front and a occluded front develops.
Why do clouds form in front of a warm front?
Cold air is more dense than warm air, so when a warm air mass meets a cold air mass, the cold air ends up below the warm air. Once the air has risen, it cools and clouds can form. Warm fronts produce clouds when warm air replaces cold air by sliding above it.
How can you tell if a front is warm or cold?
On a weather forecast map, a warm front is represented by a solid line with red semicircles pointing towards the colder air and in the direction of movement. Again, there is typically a noticeable temperature change from one side of the warm front to the other, much the same as a cold front.
What kind of weather does a occluded front bring?
The warm air mass rises as the cool air masses push and meet in the middle. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Such fronts can bring strong winds and heavy precipitation. Occluded fronts usually form around mature low pressure areas.
What is the weather before a cold front?
The air mass behind a cold front is likely to be cooler and drier than the one before the front. If a cold front is approaching, precipitation is possible just before and while the front passes. Behind the front, expect clearing skies, cooler temperatures, and lower relative humdities.
What causes air masses to move?
An air mass is a large body of air that has about the same conditions throughout. Air masses take on the conditions of the area where they form. Winds and air currents cause air masses to move. Moving air masses cause changes in the weather.
Why does air rise over land at the beach quizlet?
Air flows from high- to low-pressure areas. During the evening hours, a land breeze occurs because the ground cools rapidly during this time but the ocean remains warm. At night, warm air rises over the sea, creating a low-pressure area. The air sinks over the land creating a high-pressure area.
Who do clouds form in front of a warm front?
Why do clouds form in front of a warm front? Because the warm air cools when it rises above a cold front which forms clouds. A warm front brings gentle rain or light snow, followed by warmer, milder weather.
What type of clouds form in front of a warm front?
Warm fronts produce clouds when warm air replaces cold air by sliding above it. Many different cloud types can be created in this way: altocumulus, altostratus, cirrocumulus, cirrostratus, cirrus, cumulonimbus (and associated mammatus clouds), nimbostratus, stratus, and stratocumulus.
What does it mean when a cold front overtakes a warm front?
Because cold fronts move faster, the cold front is likely to overtake the warm front. This is known as 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.
What are the characteristics of a weather front?
A weather front is a transition zone between two different air masses at the Earth’s surface. Each air mass has unique temperature and humidity characteristics. Often there is turbulence at a front, which is the borderline where two different air masses come together.
What happens to the atmosphere during a cold front?
Atmospheric pressure changes from falling to rising at the front. After a cold front moves through your area, you may notice that the temperature is cooler, the rain has stopped, and the cumulus clouds are replaced by stratus and stratocumulus clouds or clear skies.
Where do warm fronts form in a low pressure system?
Warm fronts often form on the east side of low-pressure systems where warmer air from the south is pushed north. You will often see high clouds like cirrus, cirrostratus, and middle clouds like altostratus ahead of a warm front. These clouds form in the warm air that is high above the cool air.