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In meteorology, a cyclone is an area of closed, circular fluid motion rotating in the same direction as the Earth.[1][2]This is usually characterized by inward spiraling winds that rotate anti-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the Earth. Most large-scale cyclonic circulations are centered on areas of low atmospheric pressure.[3][4]The largest low-pressure systems are cold-core polar cyclones and extratropical cyclones which lie on the synoptic scale. According to the

NHC glossary, warm-core cyclones such astropical cyclones and subtropical cyclones also lie within the synoptic scale.[5]Mesocyclones, tornadoes and dust devils lie within the smaller mesoscale.[6]Upper level cyclones can exist without the presence of a surface low, and can pinch off from the base of the Tropical Upper Tropospheric Trough during the summer months in the Northern Hemisphere. Cyclones have also been seen on extraterrestrial planets, such as Mars and Neptune.[7][8]Cyclogenesis describes the process of cyclone formation and intensification.[9]Extratropical cyclones form as waves in large regions of enhanced mid-latitude temperature contrasts called baroclinic zones. These zones contract to form weather fronts as the cyclonic circulation closes and intensifies. Later in their life cycle, cyclones occlude as cold core systems. A cyclone's track is guided over the course of its 2 to 6 day life cycle by the steering flow of the cancer or subtropical jet stream.

Weather fronts separate two masses of air of different densities and are associated with the most prominent meteorological phenomena. Air masses separated by a front may differ intemperature or humidity. Strong cold fronts typically feature narrow bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. They form west of the circulation center and generally move from west to east. Warm fronts form east of the cyclone center and are usually preceded by stratiform precipitation and fog. They move polewardahead of the cyclone path. Occluded fronts form late in the cyclone life cycle near the center of the cyclone and often wrap around the storm center.

Tropical cyclogenesis describes the process of development of tropical cyclones. Tropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core.[10]Cyclones can transition between extratropical, subtropical, and tropical phases under the right conditions. Mesocyclones form as warm core cyclones over land, and can lead to tornadoformation.[11]Waterspouts can also form from mesocyclones, but more often develop from environments of high instability and low vertical wind shear.[12]In the Atlantic basin, a tropical cyclone is generally referred to as a hurricane (from the name of the ancient Central American deity of wind, Huracan), a cyclone in the Indian ocean and parts of the Pacific, and a typhoon in the Northwest Pacific region.[13]

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Related Questions

What causes an air mass to have a high pressure?

Anti-cyclone


What causes a air mass to have a high pressure?

Anti-cyclone


Why are the sky conditions for a cyclone cloudy?

In a cyclone, air tends to move up, which causes it to cool. Moisture in that air then condenses, forming clouds.


What kind of air pressure does a cyclone have?

A cyclone typically has lower air pressure at its center, known as the eye of the storm. This low pressure causes air to spiral inwards towards the center of the cyclone, creating strong winds and storm conditions.


What Causes Death In A Cyclone?

The New MrSpock (Xbox Live Gamertag), says: Usually Wind, Debris and Flooding.


What causes wheather movement?

The movement of wheather fronts from high pressure (cyclone) to low pressure systems(anticyclone).


Was Cyclone Tracy a tropical cyclone?

Yes, Cyclone Tracy was a tropical cyclone.


What cyclone hit before Cyclone Tracy?

Cyclone Selma came before Cyclone Tracy.


Was Cyclone Tracy a typical cyclone?

No. Cyclone Tracy was an a very intense but abnormally small cyclone.


If a cyclone takes place what will happen?

when a cyclone takes place it depends how powerful the cyclone is, if it is a very powerful cyclone then the demage can be extremley big, but if its not a powerful cyclone then very little demage will take place.It causes floods,as it create great demage it also result in the loss of huge life and property.


What was the biggest cyclone before cyclone yasi?

cyclone travis


How does coriolis effect affect the cyclone?

The Coriolis force is required for a cyclone to form into a tropical cyclone or hurricane. The force causes a greater deflection of the air (right in the northern hemisphere and left in the southern) and the correct speeds for the tropical cyclone to form. Hence why tropical cyclones do not form at or within 5 degrees of the equator, and cease to exist at around 35 degrees north, or 15 degrees south.