Portal:Tropical cyclones
The Tropical Cyclones Portal
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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Cyclonic Storm Komen (/ˈkoʊ.mɛn/) was an unusual tropical cyclone that originated near the southern coast of Bangladesh and later struck the same country while drifting over the northern Bay of Bengal. The second named storm of the 2015 season, Komen brought several days of heavy rainfall to Myanmar, Bangladesh, and India. It formed as a depression on July 26 over the Ganges delta and moved in a circular motion around the northern Bay of Bengal. Komen intensified into a 75 km/h (45 mph) cyclonic storm and moved ashore southeastern Bangladesh on July 30. The system turned westward over land and was last noted over eastern India on August 2.
Across its path, Komen dropped torrential rainfall, primarily in northwestern Myanmar where the precipitation totaled at 840 mm (33 in) in Paletwa. The rains compounded ongoing flooding and contributed to the worst flooding in the country in a century. About 1.7 million people were forced to evacuate as flood waters inundated houses to their rooftops. About 510,000 houses in the country were damaged or destroyed, and many residents lost their source of income as 667,221 acres (270,015 hectares) of crop fields were damaged. The floods killed 132 people, with at least 39 fatalities directly related to Komen. The government requested assistance from the international community to cope with the disaster, considered the worst in the country since Cyclone Nargis in 2008. Elsewhere, the storm's flooding damaged 88,900 houses in Bangladesh and covered crop fields for a week; Komen killed 45 people in the country, some of them due to illnesses spread following the storm. Later, floodwaters affected southeastern India, killing 103 people and damaging or destroying 476,046 houses. (Full article...)
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In Virginia, Hurricane Isabel became the costliest disaster in the history of Virginia. Hurricane Isabel formed from a tropical wave on September 6, 2003, in the tropical Atlantic Ocean. It moved northwestward, and within an environment of light wind shear and warm waters it steadily strengthened to reach peak winds of 265 km/h (165 mph) on September 11. After fluctuating in intensity for four days, Isabel gradually weakened and made landfall on the Outer Banks of North Carolina with winds of 165 km/h (103 mph) on September 18. It quickly weakened over land as it passed through central Virginia, and Isabel became extratropical over western Pennsylvania on September 19.
Strong winds from the hurricane affected 99 counties and cities in the state, which downed thousands of trees and left about 1.8 million without power. The storm surge impacted much of the southeastern portion of the state, peaking at around 9 feet (2.7 m) in Richmond along the James River; the surge caused significant damage to homes along riverways. The nationwide maximum rainfall total from the hurricane was 20.2 inches (510 mm) in Sherando, Virginia. In the state's mountainous region, heavy rainfall caused severe and damaging flash flooding. The hurricane caused about $1.85 billion (2003 USD, $2.17 billion 2008 USD) in damage and 36 deaths in the state—10 directly from the storm's effects and 22 indirectly related. (Full article...)
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The 1988 Pacific hurricane season was the least active Pacific hurricane season since 1981. It officially began May 15, in the eastern Pacific, and June 1, in the central Pacific and lasted until November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean. The first named storm, Tropical Storm Aletta, formed on June 16, and the last-named storm, Tropical Storm Miriam, was previously named Hurricane Joan in the Atlantic Ocean before crossing Central America and re-emerging in the eastern Pacific; Miriam continued westward and dissipated on November 2.
The season produced 23 tropical depressions, of which 15 attained tropical storm status. Seven storms reached hurricane status, three of which became major hurricanes. The strongest storm of the season, Hurricane Hector, formed on July 30 to the south of Mexico and reached peak winds of 145 mph (233 km/h)—Category 4 status—before dissipating over open waters on August 9; Hector was never a threat to land. Tropical Storm Gilma was the only cyclone in the season to make landfall, crossing the Hawaiian Islands, although there were numerous near-misses. Gilma's Hawaiian landfall was unusual, but not unprecedented. There were also two systems that successfully crossed over from the Atlantic: the aforementioned Joan / Miriam and Hurricane Debby, which became Tropical Depression Seventeen-E, making the 1988 season the first on record in which more than one tropical cyclone has crossed between the Atlantic and Pacific basins intact. Three systems caused deaths: Tropical Storm Aletta caused one death in southwestern Mexico, Hurricane Uleki caused two drownings off the coast of Oahu as it passed by the Hawaiian Islands, and Hurricane Kristy caused 21 deaths in the Mexican states of Oaxaca and Chiapas. (Full article...)
Related portals
Currently active tropical cyclones
Italicized basins are unofficial.
- North Atlantic (2026)
- No active systems
- East and Central Pacific (2026)
- No active systems
- West Pacific (2026)
- No active systems
- North Indian Ocean (2026)
- No active systems
- Mediterranean (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: 05:11, 14 March 2026 (UTC)
Tropical cyclone anniversaries
March 15
- 1889 - A cyclone passed over Apia, Samoa, wrecking 6 naval ships moored there, killing at least 147 American and German sailors.
- 1986 - Cyclone Honorinina struck eastern Madagascar, killing 99 people.
- 2019 – One of the worst tropical cyclones to affect Africa, Cyclone Idai (pictured) made landfall over Mozambique. Idai killed over 1,300 people with more than 2,000 people missing. With estimated damages of US$2.2 billion, Idai also became the costliest tropical cyclone in the South-West Indian Ocean basin, as well as the costliest natural disaster in Africa.
March 16
- 1981 - Cyclone Max reached its peak intensity with a central pressure of 960 hPa (mbar). Max had earlier passed directly over Darwin, the first cyclone to directly affect the city since Cyclone Tracy.
- 2018 - Tropical Storm Eliakim (pictured) moved ashore eastern Madagascar, producing heavy rainfall that killed 21 people.
March 17
- 1997 - Cyclone Justin reached peak intensity while meandering southeast of Papua New Guinea; its heavy rainfall killed 34 people.
- 2012 - Cyclone Lua (pictured) made landfall in Western Australia, closing oil fields and causing heavy flooding damage.
Did you know…
- …that the Australian region have three distinct lists of names for tropical storms, each one of them being administered by agencies in Australia, Indonesia and Papua New Guinea, respectively?
- …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?
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The 1987 Atlantic hurricane season was an event in the annual Atlantic hurricane season in the north Atlantic Ocean. It was a below-average season, having fewer named storms than in a normal year, that resulted in little impact throughout the Atlantic basin; the United States recorded no hurricane-related fatalities, making the 1987 season the fourth to do so since 1976. The season officially began on June 1, 1987 and ended November 30, 1987. These dates, adopted by convention, historically describe the period in each year when most systems form. Even so, a pre-season storm, Tropical Depression One, led to the season's starting on May 25. Storm activity ended several weeks early; the final storm of the season, Tropical Depression Fourteen, dissipated on November 4.
The season had fourteen tropical depressions, of which seven intensified into tropical storms—an average season has ten tropical storms—three became hurricanes and one, Emily, became a major hurricane. The two most notable storms of the season were Hurricanes Arlene and Emily. Hurricane Arlene spent roughly 14.5 days as a tropical storm before intensifying into a hurricane. Hurricane Emily was the only major hurricane of the season; its wind speeds peaked at 125 miles per hour (201 km/h) before impacting the Dominican Republic. (Full article...)
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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 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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