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Tropical Cyclones Portal
is a tropical cyclone 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
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Cyclone Catarina near peak intensity on March 26, 2004. This image was taken from the International Space Station.
Currently active tropical cyclones
Tropical cyclone anniversaries
March 3, 1982 -
Cyclone Isaac (pictured) impacted Tonga, killing 6 people and rendering 45,000 homeless.
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Original-content tropical cyclone articles: Requests: 1935 Haiti hurricane, 1926 Havana-Bermuda Hurricane, Typhoon Bilis (2000), more
Copyedit: Hurricane Elida (2002), Effects of Hurricane Dennis in Florida, Criticism of government response to Hurricane Katrina
Make sure tropical cyclone lists, such as Wikify: List of Texas hurricanes, have storm articles properly linked
Cleanup: Hurricane Rita, Hurricane Wilma, Tropical Storm Fay (2002)
Expand: Indianola Hurricane of 1886, Typhoon Nina (1975), Typhoon Durian
Stubs: 1931 Belize hurricane, History of tropical cyclone-spawned tornadoes, more...
Update: Hurricane Stan and Tropical Depression Sixteen (2008)