is a storm system with a spiral arrangement of thunderstorms, and a closed circulation around a center of
, fueled by the heat released when moist air rises and condenses. The name underscores their origin in the
nature. They are distinguished from other cyclonic storms such as
by the heat mechanism that fuels them, which makes them "warm core" storm systems.
Depending on their strength and location, there are various terms by which tropical cyclones can be described, such as tropical depression, tropical storm, hurricane, and typhoon.
Tropical cyclones can produce extremely high winds, tornadoes, torrential rain (leading to mudslides and flash floods), and drive
storm surge onto coastal areas. Though the effects on populations and ships can be catastrophic, tropical cyclones have been known to relieve drought conditions. They also carry heat away from the tropics, an important mechanism of the global
atmospheric circulation that maintains equilibrium in the environment.
Cyclone Percy –
2005 Atlantic hurricane season –
Hurricane Katrina –
List of storms in the 2005 Atlantic hurricane season –
Surrounding the eye of the hurricane is a ring of thunderstorms, called the eyewall. Rainbands surround the eye of the storm in concentric circles. In the eyewall and in the rainbands, warm, moist air rises, while in the eye and around the rainbands, air from higher in the atmosphere sinks back toward the surface. The rising air cools, and water vapor in the air condenses into rain. Sinking air warms and dries, creating a calm, cloud-free area in the eye.
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.