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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The 2005 Azores subtropical storm was the 19th nameable storm and only subtropical storm of the extremely active 2005 Atlantic hurricane season. It was not named by the National Hurricane Center as it was operationally classified as an extratropical low. It developed in the eastern Atlantic Ocean, an unusual region for late-season tropical cyclogenesis. Nonetheless, the system was able to generate a well-defined centre convecting around a warm core on 4 October. The system was short-lived, crossing over the Azores later on 4 October before becoming extratropical again on 5 October. No damages or fatalities were reported during that time. Its remnants were soon absorbed into a cold front. That system went on to become Hurricane Vince, which affected the Iberian Peninsula.
The subtropical nature of this unnamed system was determined several months after the fact, while the National Hurricane Center was performing its annual review of the season. Upon reclassification, the storm was entered into HURDAT, the official hurricane database. (Full article...)Selected image -
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The 2019 North Indian Ocean cyclone season was the second most active North Indian Ocean cyclone season on record in terms of cyclonic storms, the 1992 season was more active according to the Joint Typhoon Warning Center. The season featured 12 depressions, 11 deep depressions, 8 cyclonic storms, 6 severe cyclonic storms, 6 very severe cyclonic storms, 3 extremely severe cyclonic storms, and 1 super cyclonic storm, Kyarr, the first since Cyclone Gonu in 2007. Additionally, it also became the third-costliest season recorded in the North Indian Ocean, only behind the 2020 and 2008 seasons.
The season's first named storm, Pabuk, entered the basin on January 4, becoming the earliest-forming cyclonic storm of the North Indian Ocean on record. The second cyclone of the season, Cyclone Fani, at the time was the strongest tropical cyclone in the Bay of Bengal by 3-minute maximum sustained wind speed until it got tied with Cyclone Mocha of 2023, and minimum barometric pressure since the 1999 Odisha cyclone, while being equal in terms of maximum 3-minute sustained wind speed to 2007's Sidr and 2013's Phailin. Further activity occurred in October, and in the latter part of that month, the first and only super cyclonic storm of the 2010s, Kyarr, formed. (Full article...)Related portals
Currently active tropical cyclones
Italicized basins are unofficial.
- North Atlantic (2024)
- No active systems
- East and Central Pacific (2024)
- No active systems
- Mediterranean (2023–24)
- No active systems
- South-West Indian Ocean (2023–24)
- No active systems
- Australian region (2023–24)
- No active systems
- South Pacific (2023–24)
- No active systems
- South Atlantic (2023–24)
- No active systems
Last updated: 18:32, 26 May 2024 (UTC)
Tropical cyclone anniversaries
May 31
- 1997 - Typhoon Marie reached its peak intensity with winds of 165 km/h (105 mph) in the open Pacific Ocean. Marie did not affect land.
- 2008 - Tropical Storm Arthur (pictured) makes landfall over Belize. Damages were estimated to be around US$78 million due to extensive rainfall.
June 1,
- 2007 - Tropical Storm Barbara (pictured) starts weakening as it was reported that it had damages a total of US$55 million and killed 4 people.
- 2024 - The Central Pacific and Atlantic hurricane seasons officially begin.
June 2,
- 2003 - Severe Tropical Storm Nangka reached its peak intensity to the south of Taiwan.
- 2007 - As a rapidly weakening storm, Tropical Depression Barry (pictured) makes landfall over in Florida before transitioning into an extratropical cyclone. Barry only killed three people in its path with damages of only $118 thousand.
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 Hurricane Agatha (pictured) was the strongest Pacific hurricane to make landfall in Mexico in May since records began in 1949?
- …that Cyclone Raquel (track pictured) travelled between the Australian and South Pacific basins between the 2014–15 and 2015–16 seasons, spanning both seasons in both basins?
- …that Cyclone Amphan (pictured) in 2020 was the first storm to be classified as a Super Cyclonic Storm in the Bay of Bengal since 1999?
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The List of Florida hurricanes encompasses approximately 500 tropical or subtropical cyclones that affected the state of Florida. More storms hit Florida than any other U.S. state, and since 1851 only eighteen hurricane seasons passed without a known storm impacting the state. Collectively, cyclones that hit the region have resulted in over 10,000 deaths, most of which occurred prior to the start of hurricane hunter flights in 1943. Additionally, the cumulative impact from the storms has totalled over US$300 billion in damage (2018 dollars), primarily from Hurricane Andrew, Hurricane Irma and Hurricane Ian in the 1992, 2017, and 2022 seasons respectively. The most recent hurricane to make landfall in Florida was Idalia in 2023. (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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