Portal:Tropical cyclones

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Tropical Cyclones Portal

Typhoon tip peak.jpg

A tropical cyclone is a storm system characterized by a large low-pressure center and 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. 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, and 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 can be referred to by names such as 'hurricane', 'typhoon', 'tropical storm', 'cyclonic storm', 'tropical depression', or simply 'cyclone'.

Pictured: Typhoon Tip

Purge cache to show recent changes


Selected article

Tropical Storm Vamei

Tropical Storm Vamei (international designation: 0126, JTWC designation: 32W, sometimes called Typhoon Vamei; formerly had the alternate name Tropical Storm 05B) was the 26th named storm of the 2001 Pacific typhoon season. When it developed at 1.5° North, it earned the record for the storm that developed closest to the equator, breaking the record of Typhoon Sarah in 1956. In addition, Vamei became the only tropical cyclone in history to strike near Singapore when it hit the area in late December. Vamei crossed Indonesia and reformed in the North Indian Ocean, lasting until early the next year. The typhoon is named after a songbird with white feathers, popular to feeders in Macau.

Recently featured: Hurricane LennyList of California tropical cyclones2003 Pacific hurricane seasonBrowse


Selected picture


This false-color satellite image of Hurricane Wilma was taken at 13:15 UTC on October 19, 2005, just hours after Wilma had intensified to become the most powerful Atlantic hurricane ever observed with a pressure of 882 mbar. In this picture, Wilma has a 2 nautical mile wide eye, one of the smallest on record.


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.




Related Portals

Nuvola apps kalzium.png
Science Earth sciences Weather

Polarlicht 2.jpg
Crystal 128 energy.png
Stylised Lithium Atom.svg
Atmospheric sciences Energy Physics

Currently active tropical cyclones

North Atlantic (2015)

No active systems

East/Central Pacific (2015)

No active systems

Northwest Pacific (2015)

No active systems

North Indian Ocean (2015)

No active systems

South-West Indian Ocean (2014–15)

No active systems

Australian region (2014–15)

Severe Tropical Cyclone Nathan

South Pacific (2014–15)

Tropical Cyclone Reuben

Did you know…

Chris jan 13 1982 0950Z.jpg
Tracks of Atlantic-Pacific crossover storms.png

Tropical cyclone anniversaries

Nadia Mar 22 1994 0330Z.png
  • March 24, 1994 - Cyclone Nadia (pictured) impacted Mozambique after passing over northern Madagascar. Nadia killed over 200 people and rendered over a million people homeless.
Errol mar 26 1991 0719Z.jpg
Cyclone Catarina 2004.jpg


Things you can do