If a fast-moving cold air mass overtakes a slower-moving warm front and then continues advancing and catches another cold front
, an occluded front forms. Weather associated with the occluded front is similar to the weather associated with a cold front.
How does a occluded front occur?
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.
How does a cold front occlusion develop?
A cold occlusion occurs when
the air behind the occluded front is colder than the air ahead of it
. … The cold air behind the front is less dense than the even colder air ahead of it, and so it passes over the top of the colder air.
How does an occlusion occur in geography?
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.
How is an occluded front different from a cold front warm air is pushed up?
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.
What happens in occluded front when an occlusion occurs?
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. … After the front passes, the sky is usually clearer, and the air is drier.
How do you tell if a front is occluded?
Symbolically, an occluded front is represented by
a solid line with alternating triangles and circles pointing the direction the front is moving
. On colored weather maps, an occluded front is drawn with a solid purple line.
Which front brings the most severe weather?
Cold fronts
occur when warm air is pushed up into the atmosphere by colder air at the ground. These fronts tend to move faster than the other types of fronts and are associated with the most violent types of weather such as severe and super cell thunderstorms, although any type of front can produce these same storms.
What type of weather does a occluded front bring?
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 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.
How fast does an occluded front move?
Active cold fronts (slow moving) average 15 knots. Inactive cold fronts (fast moving)
have an average speed of 25 knots
. Although cold fronts generally do not move north, the portion nearest the low may be elongated to move northeast with the baroclinic low’s movement. Occluded Fronts.
Which type of front is stalled or still?
A stationary front
is a non-moving (or stalled) boundary between two air masses, neither of which is strong enough to replace the other. They tend to remain essentially in the same area for extended periods of time, usually moving in waves.
What is the best evidence to support that an occluded front is occuring?
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 weather is caused by high pressure?
Low-pressure systems are associated with clouds and precipitation that minimize temperature changes throughout the day, whereas high-pressure systems normally associate with
dry weather and mostly clear skies with larger diurnal temperature changes
due to greater radiation at night and greater sunshine during the day.
What happens low pressure area?
Areas where the air is warmed often have lower pressure
because the warm air rises
. These areas are called low pressure systems. … Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.
