Portal:Tropical cyclones

The Tropical Cyclones Portal

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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 fueled 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, approximately ten degrees from the Equator.

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".

Types of cyclone: 1. A "Typhoon" is a tropical cyclone located in the North-west Pacific Ocean which has the most cyclonic activity and storms occur year-round. 2. A "Hurricane" is also a tropical cyclone located at the North Atlantic Ocean or North-east Pacific Ocean which have an average storm activity and storms typically form between May 15 and November 30. 3. A "Cyclone" is a tropical cyclone that occurs in the South Pacific and Indian Oceans.

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Surface weather analysis of Typhoon Sarah on September 15

Typhoon Sarah, known as the Miyakojima Typhoon in Japan, was a destructive typhoon which was one of the strongest storms on record to strike South Korea and Russia. It formed during the peak of the busy 1959 Pacific typhoon season near Guam, and moved generally to the west-northwest. Continued observations from the hurricane hunters allowed the Joint Typhoon Warning Center (JTWC) to track Sarah from its origins to its peak as a powerful typhoon, with maximum sustained winds estimated at 305 km/h (190 mph) on September 15. Shortly thereafter, the typhoon struck the small Japanese island of Miyako-jima, where the barometric pressure fell to 908.1 mbar (26.82 inHg), the second-lowest on record for the country. Sarah turned to the north and northeast, weakening from its peak intensity. On September 17, the typhoon made landfall just west of Busan, South Korea with winds of 185 km/h (115 mph), the nation's strongest landfall at the time and only to be surpassed by Typhoon Maemi in 2003. Sarah later became extratropical over the Japanese island of Hokkaido on September 18, although the remnants persisted for several days, crossing into the Russian Far East and later dissipating on September 23.

On Miyako-jima, Sarah damaged all of the crops and destroyed about 6,000 houses. Damage was estimated at $2 million, and there were seven deaths. The damage prompted the Japan Meteorological Agency to give Sarah the special name of the "Miyakojima Typhoon". However, the effects were worst in South Korea, and Sarah was described as the worst typhoon there in 50 years. Wind gusts there peaked at 169 km/h (105 mph), the highest at the time in the country. High winds and waves heavily damaged the port of Busan. Nationwide, the storm destroyed over 14,000 homes and left 782,126 people homeless, causing over $100 million in damage. At least 669 people were killed in South Korea, and an additional 1,200 fishermen were lost offshore the country. In Japan, widespread flooding killed 47 people and destroyed 16,632 homes. (Full article...)

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Hurricane Georges just offshore northern Cuba on September 24

The effects of Hurricane Georges in Cuba included $305.8 million in damages and six deaths. Forming out of a tropical wave over the Atlantic Ocean, Georges attained a peak intensity of 155 mph (249 km/h) on September 20, 1998. On September 23, the storm made landfall in southeastern Cuba as a minimal Category 1 hurricane. The storm tracked over the county for the following two days before emerging into the Gulf of Mexico on September 25 and later making landfall in the United States as a Category 2 hurricane. Before the storm's landfall in Cuba, officials reported that 200,000 people were evacuated to shelters; however, later reports indicated that upwards 711,000 people evacuated. A state of emergency was declared for much of eastern Cuba and most of the country was placed under a tropical storm or hurricane warning during the storm's passage.

More than 3,000 homes were destroyed and 60,000 damaged throughout the country, leaving an estimated 100,000 people homeless. Agricultural losses were severe, with the plantain crop loss estimated at 70% of annual production due to Georges, accounting for roughly $15 million of the total damages. Following the passage of the hurricane, several countries provided relief funds to Cuba for disaster recovery. Despite crop losses, affected residents were given essential supplies by the local government. By December, an estimated $90 million in funds was allocated for the impacts of Georges and the drought that preceded it. (Full article...)

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Typhoon Nida as a 150-mph typhoon. This image was taken by Jacques Descloitres from MODIS Land Rapid Response Team at NASA GSFC on May 17, 2004, while the typhoon was making landfall on the Philippines.

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The 2002 Pacific hurricane season was an average season which produced fifteen named storms. Eight hurricanes formed, including a record-equaling three Category 5 hurricanes, a record it shares with the 1994 and 2018 seasons. It was also a near-average season in terms of accumulated cyclone energy (ACE), having an ACE of 125. The season officially began on May 15, 2002 in the East Pacific Ocean, and on June 1, 2002 in the Central Pacific; both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclone formation occurs in these regions of the Pacific. The first system of the 2002 season, Hurricane Alma, formed on May 24, and the last, Tropical Depression Sixteen-E, dissipated on November 16.

The strongest hurricane of the season, Kenna, formed on October 22 and peaked as a Category 5 hurricane two days later. Land impact was relatively significant. Kenna made landfall near Puerto Vallarta, located in the Mexican state of Jalisco on October 25, killing four people. Kenna was, at the time, the second-most powerful hurricane to ever strike the western coast of Mexico, hitting with winds of 140 mph (220 km/h), as well as the strongest landfall in terms of windspeed until Hurricane Patricia in 2015. Elsewhere, Tropical Storm Julio made landfall in Mexico, and Tropical Storm Boris dumped torrential rain along the Mexican coast, despite remaining offshore. Hurricanes Elida and Hernan also reached Category 5 intensity, but neither caused any damage. Damage across the basin reached $101.23 million (2002 USD), while 7 people were killed by Julio and Kenna. (Full article...)

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Currently active tropical cyclones

Italicized basins are unofficial.

North Atlantic (2025): No active systems

East and Central Pacific (2025): Hurricane Henriette; Tropical Storm Ivo

West Pacific (2025): Typhoon Podul

North Indian Ocean (2025): No active systems

Mediterranean (2025–26): No active systems

South-West Indian Ocean (2025–26): No active systems

Australian region (2025–26): No active systems

South Pacific (2025–26): No active systems

South Atlantic (2025–26): No active systems

Last updated: 20:41, 10 August 2025 (UTC)

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Tropical cyclone anniversaries

August 10,

2006 - Typhoon Saomai (pictured) made landfall on the coast of Zhejiang, China as a violent typhoon. Saomai killed over 400 people and caused $1.5 billion of damage.

August 11,

1856 - The 1856 Last Island hurricane made landfall in Louisiana as a Category 4 hurricane, obliterating Last Island (a.k.a. Isle Dernière). At least 200 people were killed.
1987 - Typhoon Betty (pictured) reaches peak intensity with 1-minute sustained winds of 260 km/h (160 mph) with a pressure of 890 hPa while making landfall over northern Samar.

August 12, 2004 - Typhoon Rananim (pictured) reached its peak intensity to the east of Taiwan with 170 km/h (105 mph) winds. Ranamin later made landfall in Zhejiang, China killing 115 people and causing over $4 billion in damage.

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Did you know…

…that the Joint Typhoon Warning Center considers that Typhoon Vera (pictured) of 1986 is actually two distinct systems, formed from two separated low-level circulations?
…that Cyclone Freddy (track pictured) in 2023 was the longest-lasting tropical cyclone recorded?
…that the typhoons of 2024—Yinxing, Toraji, Usagi, and Man-yi (pictured)—made history as the first recorded instance since 1951 of four tropical cyclones coexisting in November?
…that Hurricane Otis (pictured) in 2023 was the first Pacific hurricane to make landfall at Category 5 intensity and surpassed Hurricane Patricia as the strongest landfalling Pacific hurricane on record?

Did you know archive

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The following are images from various tropical cyclone-related articles on Wikipedia.

Image 1An extratropical cyclone near Iceland (from Cyclone)
Image 2Tropical cyclones form when the energy released by the condensation of moisture in rising air causes a positive feedback loop over warm ocean waters. (from Cyclone)
Image 3The aftermath of Hurricane Katrina in Gulfport, Mississippi. (from Tropical cyclone preparedness)
Image 4The aftermath of Hurricane Katrina in Gulfport, Mississippi. Katrina was the costliest tropical cyclone in United States history. (from Effects of tropical cyclones)
Image 5Surface weather map of the 1935 Labor Day hurricane moving up the west coast of Florida (from Tropical cyclone observation)
Image 6The initial extratropical low-pressure area forms at the location of the red dot on the image. It is usually perpendicular (at a right angle to) the leaf-like cloud formation seen on satellite during the early stage of cyclogenesis. The location of the axis of the upper level jet stream is in light blue. (from Cyclone)
Image 7Radar image of Hurricane Erika making landfall over Northeastern Mexico (from Tropical cyclone observation)
Image 8Percentages of hurricane deaths in the United States from 1970 to 1999. (from Effects of tropical cyclones)
Image 9A fictitious synoptic chart of an extratropical cyclone affecting the UK and Ireland. The blue arrows between isobars indicate the direction of the wind, while the "L" symbol denotes the centre of the "low". Note the occluded, cold and warm frontal boundaries. (from Cyclone)
Image 10Subtropical Storm Alex in the north Atlantic Ocean in January 2016 (from Cyclone)
Image 11An example of a chart for Matthew showing its five-day forecast track (from Tropical cyclone preparedness)
Image 12Broken concrete utility pole in Puerto Rico after Hurricane Maria in 2017, which ranks fourth in costliest US tropical cyclones. (from Effects of tropical cyclones)
Image 13All but the most expensive bottles of water were sold out at this Publix supermarket before Hurricane Irma; in the week preceding the storm, water sold out soon after shipments arrived (from Tropical cyclone preparedness)
Image 14Hurricane Florence viewed from the International Space Station (from Cyclone)
Image 15The number of $1 billion Atlantic hurricanes almost doubled from the 1980s to the 2010s, and inflation-adjusted costs have increased more than elevenfold. The increases have been attributed to climate change and to greater numbers of people moving to coastal areas. (from Effects of tropical cyclones)
Image 16Aerial image of destroyed houses in Tacloban, following Typhoon Haiyan (from Effects of tropical cyclones)
Image 17Cyclone on Mars, imaged by the Hubble Space Telescope (from Cyclone)
Image 18Hurricane response involves working in hazardous conditions, including contamination and electrocution hazards from floodwater.
Image 19Several cyclones on the dynamic north pole of Jupiter, imaged by Juno (from Cyclone)
Image 20Flooding in Port Arthur, Texas caused by Hurricane Harvey. Harvey was the wettest and second-costliest tropical cyclone in United States history. (from Effects of tropical cyclones)
Image 21Comparison between extratropical and tropical cyclones on surface analysis (from Cyclone)
Image 22Personnel and equipment from the National Guard of the United States en route to Hurricane Florence response efforts in 2018
Image 23Hurricane Isabel (2003)'s effect on the North Carolina Outer Banks (from Effects of tropical cyclones)
Image 24The dangerous semicircle is the upper-right corner, with the arrow marking the direction of motion of a Northern Hemisphere storm. Note that typhoons, etc. are asymmetrical, and semicircle is a convenient misnomer. (from Effects of tropical cyclones)
Image 25A polar low over the Sea of Japan in December 2009 (from Cyclone)
Image 26Chart with concurrent information for Hurricane Arlene and Tropical Storm Bret logged and plotted (from Tropical cyclone preparedness)

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This is a featured list, which represents some of the best list articles on English Wikipedia.

A Category 5 Atlantic hurricane is a tropical cyclone that reaches Category 5 intensity on the Saffir–Simpson hurricane wind scale, within the Atlantic Ocean to the north of the equator. They are among the strongest tropical cyclones that can form on Earth, having 1-minute sustained wind speeds of at least 137 knots (254 km/h; 158 mph; 70 m/s). The United States National Hurricane Center currently estimates that 11 tropical cyclones between 1851 (the first Atlantic hurricane season to be included in the official Atlantic tropical cyclone record) and 1959 peaked as Category 5 hurricanes. However, because technologies such as satellite monitoring were not available until the 1960s, some cyclones may have remained undetected. Since 1960, 31 Atlantic hurricanes have reached Category 5. (Full article...)

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Related WikiProjects

WikiProject Tropical cyclones is the central point of coordination for Wikipedia's coverage of tropical cyclones. Feel free to help!

WikiProject Weather is the main center point of coordination for Wikipedia's coverage of meteorology in general, and the parent project of WikiProject Tropical cyclones. Three other branches of WikiProject Weather in particular share significant overlaps with WikiProject Tropical cyclones:

The Non-tropical storms task force coordinates most of Wikipedia's coverage on extratropical cyclones, which tropical cyclones often transition into near the end of their lifespan.
The Floods task force takes on the scope of flooding events all over the world, with rainfall from tropical cyclones a significant factor in many of them.
WikiProject Severe weather documents the effects of extreme weather such as tornadoes, which landfalling tropical cyclones can produce.

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