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Portal:Tropical cyclones

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Tropical cyclones portal

Satellite photograph of Typhoon Tip

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. Most 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, 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".

Pictured: Typhoon Tip
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Hurricane Isabel approaching North Carolina's Outer Banks

Hurricane Isabel was the costliest and deadliest hurricane in the 2003 Atlantic hurricane season. The ninth tropical storm, fifth hurricane, and second major hurricane of the season, Isabel formed from a tropical wave on September 6 in the tropical Atlantic Ocean. Isabel moved northwestward, and within an environment of light wind shear and warm waters, it steadily strengthened to reach peak winds of 165 mph (265 km/h) on September 11, and acquired annular characteristics around this time. After fluctuating in intensity for four days, Isabel gradually weakened and made landfall on the Outer Banks of North Carolina with winds of 105 mph (165 km/h) on September 18. It quickly weakened over land and became extratropical over western Pennsylvania on the next day, before being absorbed into another system on September 20.

In North Carolina, the storm surge from Isabel washed out a portion of Hatteras Island to form what was unofficially known as Isabel Inlet. Damage was greatest along the Outer Banks, where thousands of homes were damaged or destroyed. The worst of the effects of Isabel occurred in the state of Virginia, which reported the most deaths and damage from the hurricane. About 64% of the damage and 68% of the deaths occurred in the two states alone.

Moderate to severe damage extended up the Atlantic Coastline and as far inland as West Virginia. Roughly 6 million were left without power in the eastern United States from the strong winds of Isabel. Rainfall from the storm extended from South Carolina to Maine, and westward to Michigan. Throughout the path of Isabel, damage totaled about $3.6 billion (2003 USD, $4.87 billion 2018 USD). 16 deaths in seven states were directly related to the hurricane, with 35 deaths in six states and one province indirectly related to the hurricane.

Recently featured: Hurricane IwaTropical Storm BilisHurricane PaulineEffects of Hurricane Isabel in Maryland and Washington, D.C.Hurricane JuanBrowse

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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 Meteorology is the main center point of coordination for Wikipedia's coverage of meteorology in general.


WikiProject Non-tropical storms is a similar WikiProject which coordinates most of Wikipedia's coverage on notable extratropical cyclones, and the two projects share numerous overlaps.

Subcategories

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Currently active tropical cyclones

Italicized basins are unofficial.

North Atlantic (2021)
No active systems
East and Central Pacific (2021)
No active systems
West Pacific (2021)
Severe Tropical Storm Champi
North Indian Ocean (2021)
No active systems
Mediterranean (2020–21)
No active systems
South-West Indian Ocean (2020–21)
No active systems
Australian region (2020–21)
No active systems
South Pacific (2020–21)
No active systems
South Atlantic (2020–21)
No active systems

Last updated: 10:11, 24 June 2021 (UTC)

Did you know…


Amphan 2020-05-18 0745Z.jpg
Beryl 2018-07-06 1350Z.jpg
Zeta 2020-10-28 1855Z.jpg


Tropical cyclone anniversaries

ARB 02 23 June 2015.jpg

June 23,

Celia Jun 24 2010 2055Z.jpg

June 24,

  • 1985 - Typhoon Hal moves onshore Hong Kong as a weakening typhoon killing 53 people.
  • 1993 - Typhoon Koryn reached its peak intensity with a central pressure of 910 hPa (mbar) in the Philippine Sea.
  • 2010 - Hurricane Celia (pictured) reaches Category 5 hurricane intensity, making one of a few systems in the East Pacific to reach that intensity in the month of June.
Debby Jun 24 2012 1900Z.jpg

June 25,

  • 1972 - Typhoon Ora made landfall in Luzon in the Philippines killing 131 people.
  • 2012 - Tropical Storm Debby (pictured) reaches peak intensity with winds of 100 km/h (65 mph) before it makes landfall over in Florida, killing seven people with damages worth of $250 million.


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