As a coastal city, Shantou is located in the South China Sea coast of China, which is threatened by typhoons all the year round.

The strong wind brought by typhoon is one of the most obvious effects. When a typhoon crosses the border, it will be accompanied by strong winds. Strong winds may cause trees to be uprooted, buildings to collapse, billboards and temporary structures to be destroyed. In addition, it may also cause wire breakage, power interruption and damage to communication facilities, which will bring difficulties to normal life and traffic.

Typhoons can also cause heavy rains. In the process of typhoon, accompanied by a lot of water vapor, precipitation is often very large, which may lead to floods. Heavy rain will lead to waterlogging in cities, overloading of rivers and drainage systems, and may lead to street water accumulation, flooding in low-lying areas and farmland damage.

Due to the rich coastline of Shantou, typhoons may also cause waves and storm surges. Strong winds and huge waves may cause coastal erosion, breakwaters and damage to coastal buildings and facilities. Storm surge may lead to seawater intrusion and flood in coastal areas.

The basic process of typhoon formation:

1, Warm Ocean: The formation of typhoons requires a warm ocean surface temperature, usually above 26 degrees Celsius. This warm ocean provides sufficient heat and water vapor, which provides power for the development of typhoons.

2. Formation of low pressure area: Above the warm ocean, air rises under the action of heat, forming a low pressure area. This low-pressure area attracts the surrounding air to converge towards it.

3. Rotating airflow: When the air gathers in the low pressure area, due to the Coriolis force of the earth's rotation, the air begins to rotate along a spiral path. This rotating airflow is the core of typhoon formation.

4. Water vapor condensation: As the air rises, the temperature gradually drops, and water vapor begins to condense to form clouds. These clouds release a lot of heat and energy, which further promotes the development of typhoons.

5. Eye and eye wall formation: A relatively calm area is formed in the center of the typhoon, which is called eye. Around the eyes is the eye wall area, where the airflow rotates rapidly and the wind is the strongest. Eye and eye wall are one of the most important features of typhoon.

6. Strengthening and moving: With the continuous supply of heat from the ocean surface, typhoons will gradually strengthen and stay away from the low latitude waters. Its path and intensity will be affected by various environmental factors, such as ocean temperature, atmospheric stability, wind shear and so on.