How is a typhoon considered to have made landfall? Direction of rotation of a typhoon

my country divides tropical cyclones in the South China Sea and the northwest Pacific into six levels according to the maximum average wind force near the bottom center. When the wind force near the center reaches level 12 or above, it is collectively called a typhoon. We may hear about a typhoon landing in the near future, but what does it mean to be considered a typhoon landing? I guess many friends don’t know much about it, so let’s take a look!

Contents of this article

1. How to calculate the landfall of a typhoon

2. Typhoon rotation direction

3. Causes of typhoon fireworks

How to calculate the landfall of typhoon

Typhoon landfall means that the center of the typhoon moves to the land as a whole. Simply put, when the moving track of the typhoon eye intersects with the coastline, the typhoon has landed, and the intersection of the typhoon center and the coastline is the landing point. However, the typhoon landing point does not mean that the disaster is the most serious.

The definition of typhoon landfall is that the center of the typhoon moves as a whole to the land. Simply put, when the moving track of the typhoon eye intersects with the coastline, the typhoon has landed. The intersection of the center point of the typhoon and the coastline is the landing point.

The landing point of a typhoon does not represent the most serious disaster. It is also necessary to combine the changes in the structure before and after the typhoon lands, the topography of the landing point, and the coordination of the weather system in order to analyze the impact caused by the typhoon.

Typhoons are mainly caused by cumulonimbus clouds. The sea is in the tropical ocean and is exposed to the sun for a long time, which can make the temperature reach above 26℃. Under the influence of this temperature, water vapor will form on the sea surface, which will condense into cumulonimbus clouds. The deflection force of the earth's rotation makes the system form a cyclone, and the cycle is like this, and the typhoon is formed.

Typhoon rotation direction

Typhoons in the Northern Hemisphere rotate counterclockwise, while typhoons in the Southern Hemisphere rotate clockwise. Since the Coriolis force in the Northern and Southern Hemispheres is in opposite directions, typhoons in the Northern Hemisphere will move counterclockwise around low pressure areas, while typhoons in the Southern Hemisphere will move clockwise around low pressure areas.

Typhoon is a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs on tropical or subtropical oceans. It is a powerful and deep "tropical weather system".

my country divides tropical cyclones in the South China Sea and the northwest Pacific into six levels according to the maximum average wind speed near their bottom center. When the wind speed near the center reaches level 12 or above, they are collectively called typhoons.

Typhoons can be divided into general typhoons (maximum wind force 12-13), strong typhoons (maximum wind force 14-15), and super typhoons (maximum wind force ≥16).

Causes of Typhoon Fireworks

Usually, the formation of a typhoon requires several conditions, such as sea surface temperature above 26.5℃, a certain positive vorticity initial disturbance, small vertical shear of the ambient wind, and low pressure or cloud disturbance at least a few degrees away from the equator. Therefore, the formation of typhoon fireworks is also inseparable from the above reasons.

Typhoons mainly refer to tropical cyclones that form and move in the northwest Pacific Ocean and the South China Sea. Super Typhoon Fireworks is the 26th named storm in 2015. The name "Fireworks" was provided by Macau, China, which means fireworks.

On November 12, 2015, a low pressure area formed over the sea near the Marshall Islands. On November 20, "Fireworks" strengthened to a strong typhoon. In the early morning of November 22, it weakened to a severe typhoon. On November 26, its intensity continued to weaken, and the Central Meteorological Observatory stopped numbering it.