Tropical cyclones generally move in a westward direction steered by the upper level easterlies which a slight movement towards the pole ward direction.
3.3 In the FIGURE, tropical cyclone Japhet is developed from an extreme low pressure cell, which has the THREE following air movements. (A) sinking, converges and moves clockwise
The movements of tropical cyclones are predominantly passive rather than active and the most prevailing factors governing their movements are the adjacent steering currents. The steering current is usually a system having planetary scale . . .
As the cyclone moves towards the western edge of the STR, it turns polewards (recurves) and gets into the steering current of another large, persistent planetary system - the mid-latitude westerlies, and continues to recurve towards the general east. Whether a cyclone hits land all depends on whether land happens to be in its path.
Anatomy of a cyclone As a result, tropical cyclones rotate in a counterclockwise (or cyclonic) direction in the Northern Hemisphere and in a clockwise (or anticyclonic) direction in the Southern Hemisphere.
counterclockwiseIn fact, tropical cyclones — the general name for the storms called typhoons, hurricanes or cyclones in different parts of the world — always spin counterclockwise in the Northern Hemisphere, and spin in the opposite direction in the Southern Hemisphere.
Typhoons usually move east to west across the country, heading north or west as they go. Storms most frequently make landfall on the islands of Eastern Visayas, Bicol region, and northern Luzon, whereas the southern island and region of Mindanao is largely free of typhoons.
The winds in a hurricane move cyclonic and inward at the surface and anti-cyclonic and outward in the upper troposphere. Cyclonic winds are counter-clockwise in the northern hemisphere and clockwise in the southern hemisphere. Anti-cyclonic is the opposite of cyclonic.
Cyclonic rotation, or cyclonic circulation, is atmospheric motion in the same direction as a planet's rotation, as opposed to anticyclonic rotation. For Earth, the Coriolis effect causes cyclonic rotation to be in a counterclockwise direction in the Northern Hemisphere and clockwise in the Southern Hemisphere.
cyclone, any large system of winds that circulates about a centre of low atmospheric pressure in a counterclockwise direction north of the Equator and in a clockwise direction to the south.
On November 1, 2013, a low pressure area was spotted over the Caroline Islands in Kiribati. It moved westward and intensified into a tropical depression on November 3. It became a tropical storm and earned the international name “Haiyan” on November 4 and eventually escalated into a typhoon category on November 5.
As the air moves up the windward side of a mountain, it cools, and the volume decreases. As a result, humidity increases and orographic clouds and precipitation can develop. When the air descends the leeward side, it warms and is drier because the moisture in the air was wrung out during the ascent.
Tropical cyclones develop in tropical oceans at least 5° - 30° latitude north or south of the equator, where the sea temperature is at least 27 °C. Tropical cyclones are important on Earth for transferring heat and energy between the equator and the poles.
A tropical cyclone brings very violent winds, torrential rain, high waves and, in some cases, very destructive storm surges and coastal flooding. The winds blow counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
In the Northern Hemisphere, they bend to the right. This makes the cyclone rotate counterclockwise. In the Southern Hemisphere, currents bend to the left. This makes cyclones rotate clockwise.
In the southern hemisphere these tropical storms are called cyclones and rotate in a clockwise direction, while in the northern hemisphere cyclones are called hurricanes or typhoons and rotate in an anti-clockwise direction.