Tropical cyclones Portal
A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones feed on 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. Tropical cyclones originate in the doldrums near the equator, about 10° away from it.
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 counterclockwise rotation in the Northern Hemisphere and clockwise rotation in the Southern Hemisphere. Depending on its location and strength, a tropical cyclone is referred to by names such as hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, and simply cyclone.
- Pictured: Typhoon Tip
Purge cache to show recent changes
Active tropical cyclones
Tropical cyclone anniversaries
- March 13, 2003 - Cyclone Erica reached its peak with 240 km/h (150 mph), just before it brushed the southwestern coast of New Caledonia. Erica killed 2 people on the island and caused significant damage there.
Here are some tasks you can do
- Requests: Original-content tropical cyclone articles: 1935 Haiti hurricane, 1926 Havana-Bermuda Hurricane, Typhoon Bilis (2000), more
- Copyedit: Hurricane Elida (2002), Effects of Hurricane Dennis in Florida, Criticism of government response to Hurricane Katrina
- Wikify: Make sure tropical cyclone lists, such as List of Texas hurricanes, have storm articles properly linked
- Cleanup: Hurricane Rita, Hurricane Wilma, Tropical Storm Fay (2002)
- Expand: Indianola Hurricane of 1886, Typhoon Nina (1975), Typhoon Durian
- Stubs: 1931 Belize hurricane, History of tropical cyclone-spawned tornadoes, more...
- Update: Hurricane Stan and Tropical Depression Sixteen (2008)
Tue, 25 Feb 2014 01:20:12 -0800
However, they are shifting, and South Africa could be at increased risk of being directly impacted by tropical cyclones within the next 40 years. Secondly, while global warming is causing frost to be less severe, late season frost is not receding as ...
The Maritime Executive
Wed, 26 Feb 2014 03:26:15 -0800
The university said "South Africa could be at increased risk of being directly impacted by tropical cyclones within the next 40 years." Jennifer Fitchett, a PhD student from the Wits School of Geography, Archaeology and Environmental Science, said that ...
Tue, 18 Feb 2014 17:52:30 -0800
The UK economy will have more exposure to extra-tropical cyclones - the type of storm seen over recent weeks - than any other country in the world, according to a global ranking of countries and natural risks. Risk-assessment firm Maplecroft, who put ...
Business Insider Australia
Sat, 08 Mar 2014 17:18:45 -0800
The tropical lows on either side of the peninsula have not shown signs of development in the past 24 hours, however may intensify and develop into tropical cyclones as they move closer to land on Monday. Authorities are warning residents along to coast ...
Sun, 02 Mar 2014 19:22:30 -0800
The average number of Tropical Cyclones that form within the Australian region is 11 per year, with four in the QLD region. Meanwhile, western and central parts of New South Wales received some welcome and much needed follow-up rain last weekend, with ...
UH System Current News
UH System Current News
Thu, 06 Mar 2014 18:26:15 -0800
Bell is a meteorologist whose current research is focused on the genesis and intensification of tropical cyclones, a topic that is particularly relevant to Hawaiʻi and Pacific island nations. “Our ability to skillfully predict changes in tropical ...
Sat, 08 Mar 2014 23:18:45 -0800
Reginald Johnson, a junior from Cornell University, gave a presentation Saturday morning about Hurricane Sandy and past tropical cyclones that could have followed similar paths. “I really like following storms,” he said. “I like looking at ...
Fri, 07 Mar 2014 07:11:15 -0800
A tropical low moving through the Arafura Sea and another in the Coral Sea have become better organized in the past 24 hours. Both areas of low pressure have the potential to become named tropical cyclones in the coming days as they approach ...
Oops, we seem to be having trouble contacting Twitter
You can talk about Tropical cyclones with people all over the world in our discussions.