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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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Hurricane Mitch at peak intensity

Hurricane Mitch was one of the most powerful Atlantic hurricanes ever observed, with maximum sustained winds of 180 mph (290 km/h). The storm was the thirteenth tropical storm, ninth hurricane, and third major hurricane of the 1998 Atlantic hurricane season. At the time, Mitch was the strongest hurricane ever observed in the Atlantic Ocean in the month of October, though it has since been surpassed by Hurricane Wilma of the 2005 season. Mitch formed in the western Caribbean Sea, eventually reaching Category 5 status on the Saffir–Simpson Hurricane Scale (SSHS). It remained nearly stationary over water for several days before eventually weakening, striking Honduras as a minimal hurricane.

Though Mitch weakened before striking land, it drifted just off the coast of Central America from October 29 to November 3, dropping historic amounts of rainfall, with unofficial reports of up to 75 inches (1,900 mm). Deaths due to catastrophic flooding made it the second deadliest Atlantic hurricane in history; nearly 11,000 people were killed with over 8,000 left missing by the end of 1998. The flooding caused extreme damage, amounting to around $7 billion (2005 USD), though exact totals will likely never be known.

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Andrew-Floyd.jpg

Visual comparison of Hurricane Floyd and Hurricane Andrew. The two storms are at similar positions and nearly identical intensities (933 mbar), but Hurricane Floyd is remarkably larger. In 1999 at the time of Floyd, it was believed that the wind speeds of the hurricanes were nearly identical as well, at 120 knots (140 mph, 220 km/h). In 2002, however, hurricane re-analysis concluded that Andrew had stronger winds than had previously been thought, and in the picture the storm winds are actually close to 145 knots (165 mph, 270 km/h).


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.


WikiProject Non-tropical storms is a similar WikiProject which coordinates most of Wikipedia's coverage on notable extratropical cyclones, and the two projects share numerous overlaps.

Subcategories

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Currently active tropical cyclones

Italicized basins are unofficial.

North Atlantic (2021)
No active systems
East and Central Pacific (2021)
No active systems
West Pacific (2021)
Tropical Storm Champi
North Indian Ocean (2021)
No active systems
Mediterranean (2020–21)
No active systems
South-West Indian Ocean (2020–21)
No active systems
Australian region (2020–21)
No active systems
South Pacific (2020–21)
No active systems
South Atlantic (2020–21)
No active systems

Last updated: 01:38, 23 June 2021 (UTC)

Did you know…


Amphan 2020-05-18 0745Z.jpg
Beryl 2018-07-06 1350Z.jpg
Zeta 2020-10-28 1855Z.jpg


Tropical cyclone anniversaries

Kujira Jun 22 2015 0605Z.jpg

June 22,

ARB 02 23 June 2015.jpg

June 23,

Celia Jun 24 2010 2055Z.jpg

June 24,

  • 1985 - Typhoon Hal moves onshore Hong Kong as a weakening typhoon killing 53 people.
  • 1993 - Typhoon Koryn reached its peak intensity with a central pressure of 910 hPa (mbar) in the Philippine Sea.
  • 2010 - Hurricane Celia (pictured) reaches Category 5 hurricane intensity, making one of a few systems in the East Pacific to reach that intensity in the month of June.


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