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Portal:Tropical cyclones

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Tropical Cyclones Portal

Typhoon tip peak.jpg

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. 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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Radar image of Tropical Storm Barry making landfall

Tropical Storm Barry was a strong tropical storm that made landfall on the Florida Panhandle during August 2001. The third tropical cyclone and second named storm of the 2001 Atlantic hurricane season, Barry developed from a tropical wave that moved off the coast of Africa on July 24 and tracked westward. The wave entered the Caribbean on July 29 and spawned a low pressure area that organized into Tropical Storm Barry on August 3. After fluctuations in intensity and track, the system attained peak winds of 70 mph (110 km/h) in the Gulf of Mexico, and headed northward before moving ashore on the Gulf Coast.

Unlike the devastating Tropical Storm Allison earlier in the season, Barry's effects were moderate. Nine deaths occurred, six in Cuba and three in Florida. As a tropical cyclone, rainfall peaked at 8.9 in (230 mm) at Tallahassee, and winds gusts topped out at 79 mph (127 km/h). The wave that would become Barry dropped large amounts of rain across southern Florida, which led to significant flooding and structural damage. Moderate flooding occurred throughout the Panhandle, where damage was also reported as a result of high wind gusts. As the storm's remnants tracked inland, parts of the Mississippi Valley received light precipitation. Barry is estimated to have caused $30 million (2001 USD, $36.5 million 2008 USD) in damage.

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Selected picture

Tropical Cyclone Inigo 2003 April 2.jpg

Cyclone Inigo as a 130 mph hurricane. This image is taken from the Moderate Resolution Imaging Spectroradiometer on April 2, 2003, while the cyclone was to the south of Indonesia.


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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


Did you know…

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  • … that Hurricane Faith (pictured) was tracked until it was located 600 miles (965 km) from the North Pole?
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Tropical cyclone anniversaries

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September 18,

  • 1926 - The 1926 Miami Hurricane made landfall just to the south of Miami, devastating the city.
  • 2013 - Hurricane Manuel (pictured) reaches peak intensity as a Category 1 with winds of 120 km/h (75 mph) with a minimum pressure of 983 hPa. Manuel made landfall near Culiacán with extreme impacts killing 123 people and damages of $4.2 billion. It became the costliest hurricane in the East Pacific.
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September 19,

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September 20,

  • 1967 - Hurricane Beulah made landfall in Texas just north of the Rio Grande. Beulah caused severe flooding in the state with the resulting damage exceeding $1 billion.
  • 1999 - Hurricane Gert (pictured) passes the island of Bermuda as a weakening Category 3 major hurricane. In its lifetime, Gert killed only 2 people with minor damages.


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