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Portal:Tropical cyclones

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Tropical cyclones portal

Satellite photograph of Typhoon Tip

A tropical cyclone is a storm system characterized by a large low-pressure center, a closed low-level circulation and a spiral arrangement of numerous thunderstorms that produce strong winds and heavy rainfall. Tropical cyclones feed on the heat released when moist air rises, resulting in condensation of water vapor contained in the moist air. They are fuelled by a different heat mechanism than other cyclonic windstorms such as nor'easters, European windstorms and polar lows, leading to their classification as "warm core" storm systems. Most tropical cyclones originate in the doldrums near the Equator, approximately 10 degrees away.

The term "tropical" refers to both the geographic origin of these systems, which form almost exclusively in tropical regions of the globe, as well as to their formation in maritime tropical air masses. The term "cyclone" refers to such storms' cyclonic nature, with anticlockwise rotation in the Northern Hemisphere and clockwise rotation in the Southern Hemisphere. Depending on its location and intensity, a tropical cyclone may be referred to by names such as "hurricane", "typhoon", "tropical storm", "cyclonic storm", "tropical depression" or simply "cyclone".

Pictured: Typhoon Tip

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Satellite Image of Hurricane Floyd.

Hurricane Floyd was the sixth named storm, fourth hurricane, and third major hurricane in the 1999 Atlantic hurricane season. A Cape Verde-type hurricane, it struck the Bahamas and paralleled the coastline of the Eastern United States, making landfall in North Carolina as a Category 2 hurricane. The hurricane produced torrential rainfall in the state, adding more rain to an area hit by Hurricane Dennis just weeks earlier. Floyd was responsible for 57 fatalities and $5.13 billion in damage (2005 USD).

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Global tropical cyclone tracks-edit2.jpg

The map of global tropical cyclone tracks from 1985 to 2005 includes hundreds of systems that affected over a dozen countries. This picture was made using NASA imagery and data from various meteorological agencies.


Related WikiProjects

WikiProject Tropical cyclones is the central point of coordination for Wikipedia's coverage of tropical cyclones. Feel free to help!

WikiProject Meteorology is the main center point of coordination for Wikipedia's coverage of meteorology in general.

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Currently active tropical cyclones

Italicized basins are unofficial.

North Atlantic (2019)
No active systems
East and Central Pacific (2019)
No active systems
West Pacific (2019)
No active systems
North Indian Ocean (2019)
No active systems
Mediterranean (2018–19)
No active systems
South-West Indian Ocean (2018–19)
No active systems
Australian region (2018–19)
No active systems
South Pacific (2018–19)
No active systems
South Atlantic (2018–19)
No active systems

Last updated 03:00, 23 May 2019 (UTC)

Did you know…


Hina Mar 16 1985 0319Z.png
  • …that according to an unofficial reanalyisis using the Dvorak technique, Cyclone Hina (pictured) had a peak intensity of 170 kt (195 mph, 315 km/h)?
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Tropical cyclone anniversaries

Typhoon Chan-Hom 2003.jpg

May 23,

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  • May 24, 1989 - Tropical Storm Cecil (pictured) made landfall in central Vietnam where it killed 52 people and left over 100,000 others homeless.
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