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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 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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Selected article

Satellite Image of Typhoon Paka

Typhoon Paka (international designation: 9728, JTWC designation: 05C, PAGASA designation: Rubing, also known as Super Typhoon Paka) was the last tropical cyclone in the 1997 Pacific hurricane and typhoon season, and was among the strongest Pacific typhoons in the month of December. Paka, which is the Hawaiian name for Pat, developed on November 28 in the central Pacific Ocean from a trough near the equator well to the southwest of Hawaii. After initially tracking northward, the storm turned to the west due to a strong high pressure area to its north, and on December 7 it crossed into the western Pacific Ocean. The cyclone intensified into a typhoon as it crossed the Marshall Islands on December 10, and continuing to intensify Paka struck Guam and Rota on December 16 with winds of 230 km/h (145 mph). The typhoon strengthened further and reached its peak intensity by December 18 over open waters. Subsequently it underwent a steady weakening trend, and on December 23 Paka dissipated.

Typhoon Paka first impacted the Marshall Islands, where it dropped heavy rainfall and resulted in $80 million in damage (1997 USD, $100 million 2007 USD). Later, it passed just north of Guam, where strong winds destroyed about 1,500 buildings and damaged 10,000 more; 5,000 people were left homeless, and the island experienced a complete power outage following the typhoon. Damage on the island totaled $500 million (1997 USD, $645 million 2007 USD), which warranted the retirement of its name. Paka also caused light damage in the Northern Marianas Islands. The typhoon resulted in no fatalities.

Recently featured: 1996 Pacific hurricane seasonHurricane AudreyHurricane Nicole (1998)Hurricane Sergio (2006)Typhoon MatsaBrowse


Selected picture

Hurricane Alice 01 jan 1955 radar.jpg

Hurricane Alice is the only known Atlantic hurricane to span two calendar years, and one of only two named tropical cyclones to do so. This image of the PPI scope of SPS-6 radar on the USS MIDWAY shows the rare January hurricane northeast of British Virgin Islands.


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


Currently active tropical cyclones


Did you know…

Hurricane Faith 1966.jpg
  • … that Hurricane Faith (pictured) was tracked until it was located 600 miles (965 km) from the North Pole?
Katrina–Victor–Cindy 1998 track.png
Chris jan 13 1982 0950Z.jpg

Tropical cyclone anniversaries

TC Dovi 09 feb 2003 0120Z.jpg
  • February 9, 2003 - Cyclone Dovi (pictured) reached its peak intensity with winds of 240 km/h (150 mph) in the open Pacific Ocean. Dovi did not affect any land.
Higos 2015-02-10 0310Z.jpg
  • February 10, 2015 - Typhoon Higos (pictured) attained its peak intensity with 1-minute sustained winds of 215 km/h (130 mph), becoming the strongest and the easternmost storm in the month of February in the Northwest Pacific ocean.
Hollanda 10 February 1994.jpg
Four Southern Hemisphere Tropical Cyclones (2003).jpg
Tropical cyclone vaianu (2006).jpg
  • February 13, 2006 - Cyclone Vaianu (pictured) reached its peak intensity with a central pressure of 965 hPa (mbar). Vaianu caused flooding in Tonga.

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Portal:Tropical_cyclones — Please support Wikipedia.
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13549 news items


Fri, 05 Feb 2016 05:41:15 -0800

Using data from 3,000 tropical cyclones that tore through the world's ocean basins between 1981 and 2012, the researchers first organized the storms according to their lifetime maximum intensity—the highest category strength they achieved. In doing so ...


Tue, 02 Feb 2016 05:50:15 -0800

If the Montreal Protocol had been rejected and the risks of ozone depleting substances had been ignored by the world, we would be facing even more intense tropical cyclones in the near future, according to a new study in the American Meteorological ...


Thu, 11 Feb 2016 10:22:30 -0800

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Washington Post

Washington Post
Thu, 11 Feb 2016 08:15:01 -0800

(Tropical cyclones go by various names, including hurricanes and typhoons, in different parts of the world). “I regard Patricia as unmatched for the strongest winds of any tropical cyclone in recorded history,” Masters wrote on Monday. He later ...

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Yale Environment 360
Thu, 11 Feb 2016 05:37:07 -0800

This year's El Niño phenomenon is spawning extreme weather around the planet. Now scientists are working to understand if global warming will lead to more powerful El Niños that will make droughts, floods, snowstorms, and hurricanes more intense.


Wed, 10 Feb 2016 10:11:15 -0800

AIRS provides valuable temperature data for tropical cyclones such as cloud top and sea surface temperatures. AIRS saw strongest storms with cloud top temperatures colder than minus 63 degrees Fahrenheit (minus 53 degrees Celsius) north, east and ...
WPTZ The Champlain Valley
Thu, 11 Feb 2016 12:48:45 -0800

He said he notices weather systems, such as tropical cyclones, in unexpected locations. "When you look at the ... atmosphere on the limb of the Earth, I wouldn't say it looks unhealthy, but it definitely looks very, very fragile and just kind of like ...
Newshub (blog)
Tue, 09 Feb 2016 18:46:56 -0800

The MetService says it is keeping a close eye on two possible tropical cyclones in the south Pacific, which could have an effect on New Zealand. Lisa Murray, the communications meteorologist for MetService says at this stage, nothing has formed, but ...

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