There is often precipitation along an occluded front from cumulonimbus or nimbostratus clouds. Wind changes direction as the front passes and the temperature either warms or cools. After the front passes, the sky is usually clearer, and the air is drier.
What kind of weather does an 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.
Do occluded fronts cause thunderstorms?
A thunderstorm is a storm that produces thunder and rain, on average lasting about 30 minutes and averaging about 15 miles in diameter. There are four types of weather fronts that cause thunderstorms: cold front, warm front, stationary front and occluded front .
Does an occluded front bring cold weather?
A cold occlusion takes place when the air on the back side of the front is is colder than that ahead of it. With this type of occluded front, it acts as if it is a cold front. Cold fronts are responsible for the strong, severe storms that can produce damaging winds, hail and tornadoes.
What is a weather occlusion?
An occluded front is symbolised on a weather map as a line with both semicircles and triangles. ... The word occluded means ‘hidden’ and an occlusion occurs when the cold front ‘catches up’ with the warm front . The warm air is then lifted from the surface, and therefore hidden.
What happens after 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. ... After the front passes, the sky is usually clearer, and the air is drier .
What causes an occluded front?
An Occluded Front forms when a warm air mass gets caught between two cold air masses . 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.
What type of front is mostly associated with high pressures?
Warm fronts are often associated with high-pressure systems, where warm air is pressed close to the ground. High-pressure systems usually indicate calm, clear weather.
Are warm fronts associated with clouds and rain?
Because the advancing warm air is less dense, it has a difficult time pushing the heavier cold air back. This is why warm fronts move more slowly than cold fronts, and contribute to the longer periods of clouds and precipitation .
What clouds do cold fronts bring?
Cumulus clouds are the most common cloud types that are produced by cold fronts. They often grow into cumulonimbus clouds, which produce thunderstorms. Cold fronts can also produce nimbostratus, stratocumulus, and stratus clouds.
Which kind of front brings several days of wet weather?
A stationary front may bring days of rain, drizzle, and fog. Winds usually blow parallel to the front, but in opposite directions. After several days, the front will likely break apart. When a cold air mass takes the place of a warm air mass, there is a cold front.
How do you tell if a front is occluded?
The symbol for an occluded front is a purple line with alternating triangles and semi-circles (also purple) pointing in the direction the front is moving . Sometimes a cold front will “catch up” to a warm front and overtake both it and the cooler air out ahead of it. If this happens, an occluded front is born.
What happens when warm front passes?
Warm fronts generally move from southwest to northeast and the air behind a warm front is warmer and more moist than the air ahead of it. When a warm front passes through, the air becomes noticeably warmer and more humid than it was before .
What happens when an occlusion occurs?
As the storm intensifies , the cold front rotates around the storm and catches the warm front. ... On colored weather maps, an occluded front is drawn with a solid purple line. Changes in temperature, dew point temperature, and wind direction can occur with the passage of an occluded front.
What type of weather does high pressure bring?
A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds. When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere. These bring sunny skies .
What situation creates a cold occlusion?
A cold occlusion occurs when a cold front lifts a warm front . This can result in the piling up of three air masses on top of each other. In the case of a cold front and a warm front, there are typically two air masses that are interacting.
