The term used for cyclones that originate over tropical waters. It is a warm core low pressure system which is non-frontal and has organized circulation. Depending on sustained surface winds, the system is classified as a tropical disturbance, tropical depression, tropical storm, or a hurricane or typhoon.
An intense low pressure system which forms over warm ocean waters at low latitudes. The typical structure consists of bands of cumulonimbus clouds which spiral towards a clear central eye, though this can be obscured by high cirrus cloud. Tropical cyclones are associated with extremely strong winds, torrential rain, storm surges (in coastal areas) and huge seas. The name Tropical Cyclone is usually used for systems in the southwest Pacific and Indian Oceans, while other names such as tropical storms, hurricanes and typhoons are used in other parts of the world. If they attain maximum mean winds above 117 km/h (63 knots) they are called Severe Tropical Cyclones (Category 3 or above).
a large storm rotating around an area of very low pressure, with strong winds blowing around the centre
a low pressure system in the tropics that, in the Southern Hemisphere, has a well defined clockwise wind circulations with a region surrounding the centre with gale force winds
a low-pressure system, with a defined circulation, that develops over warm waters
a relatively small, intensely developed low pressure cell that usually occur over warm oceans
a storm that derives its energy from cloud formation and
a synoptic-scale, near-circular cyclone , generally originating over tropical oceans
a warm-core, non-frontal low-pressure system that develops over tropical or subtropical waters, covering a large region and with organized convection (i
a warm core system that is vertically stacked and derives its energy from warm ocean waters
a cyclone in the tropical waters with winds that rotate at 74 miles or more per hour.
The general term for a cyclone that originates over the tropical oceans. The are rates by international agreement as: a. tropical disturbance, having slight surface circulation; b. tropical depression, winds up to 34 knots; c. tropical storm, winds of 35 â€“64 knots; d. hurricane or typhoon, winds of 65 knots and higher.
A non-frontal rotating (clockwise in the Southern hemisphere) low pressure system, below 1000hPa and of tropical origin, in which 10 minute mean wind speeds exceed gale force (63km/hr, 34kt or 17.5m/s).
The generic term given to all tropical depressions, tropical storms and hurricanes. A tropical cyclone has a warm core and must have a warm ocean and humid environment in order to survive. Also, a tropical cyclone will have its most intense winds concentrated close to the center.
Also known as a tropical disturbance. A low pressure system that marks the very beginning of the life of a hurricane.
An area of low atmospheric pressure characterized by rotating and converging winds and ascending air, where the central core is warmer than the surrounding atmosphere.
An closed area of low pressure which forms in the tropics and possesses organized thunderstorm activity and a definite cyclonic wind circulation.
A synoptic-scale to meso-scale low pressure system which derives its energy primarily from: 1. evaporation from the sea in the presence of high winds and low surface pressure; and 2. condensation in convective clouds concentrated near its centre. (Section 1.2.3, for objective definitions around the world.)
the general term for a large low pressure system that originates over the tropical oceans; includes tropical depressions, tropical storms, and hurricanes
A warm-core, non-frontal low pressure system of synoptic scale that develops over tropical or subtropical waters and has a definite organized surface circulation.
is a low-pressure weather system in the tropics in which the central core is warmer than the surrounding atmosphere. A tropical storm is a tropical cyclone with winds from 39 to 74 miles per hour. When winds exceed 74 miles per hour, the cyclone is called a hurricane.
A low-pressure system that forms in the tropics.
The general name for a storm that has a warm core, a closed eye, and winds greater than 73 mph. Synonymous with the words Hurricane, Cyclone and Typhoon.
A low-pressure weather system in which the central core is warmer than the surrounding atmosphere. See the table below for differences between tropical and extratropical cyclones. The term "tropical cyclone" is also used in the Indian Ocean and around the Coral Sea off northeastern Australia to describe storms called "hurricanes" and "typhoons" in other areas.
The generic term for the class of tropical weather systems, including tropical depressions, tropical storms, and hurricanes.
A warm-core non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters, with organized convection and a definite closed cyclonic surface wind circulation. Once formed, a tropical cyclone is maintained by the extraction of latent heat from the ocean at high temperature and heat export at the low temperatures of the upper troposphere. In this they differ from extratropical cyclones, which derive their energy from temperature contrasts in the atmosphere (baroclinic effects).
The general term for all cyclonic circulations that originate over tropical waters. Circulation is counter-clockwise in the Northern Hemisphere, and clockwise in the Southern Hemisphere. Related phenomena such as inland or coastal flooding due to heavy rainfall, high wind, landslides, hazardous-material release, storm surge, and/or high surf commonly occur during a tropical cyclone event.
A generic term for a cyclonic, low-pressure system over tropical or subtropical waters.
A warm core low pressure system which develops over tropical, and sometimes subtropical, waters, and has an organized circulation. Depending on sustained surface winds, the system is classified as a tropical disturbance tropical depression tropical storm, or a hurricane or typhoon.
A vigorous depression in tropical latitudes producing winds of gale or hurricane force. Similar systems are called Hurricanes in the West Indies and the USA but Typhoons in the China Sea and western Pacific. I think they call them Willy Willies or something like that near Australia.
Another name for hurricane.
A tropical cyclone is a violent low-pressure weather system in which the central core is warmer than the surrounding winds. If it forms in the Atlantic or eastern Pacific Ocean, it is called a hurricane. If it forms in the western Pacific Ocean, it is called a typhoon.
A general term for all cyclone circulations originating over tropical waters. Its characteristics include a warm-core, non-frontal pressure system of synoptic scale that originates over the tropical or subtropical waters and has a definite organized surface. Used to define wind circulations rotating around an atmosphere which include tropical depressions, tropical storms, and hurricanes. The strongest winds of this cyclone are near the Earth's center.
An intense tropical weather system with a well-defined circulation and maximum sustained winds of 74 miles per hour (64 knots or higher in the Southwest Indian Ocean. In other parts of the world, they are known as hurricanes, typhoons and severe tropical cyclones.
A tropical cyclone is a warm storm system fueled by thunderstorms near its center. It feeds on the heat released when moist air rises and the water vapor in it condenses. The term describes the storm's origin in the tropics and its cyclonic nature, which means that its circulation is counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.