How is a typhoon formed?

The reasons for the formation of typhoons are:

Typhoon originated in tropical ocean, where the temperature is high and a large amount of seawater is evaporated into the air, forming a low pressure center. With the change of air pressure and the movement of the earth itself, the inflow of air also rotates, forming a counterclockwise air vortex, which is a tropical cyclone. As long as the temperature does not drop, this tropical cyclone will get stronger and stronger, and finally a typhoon will form.

Extended data:

Typhoon is a kind of tropical cyclone. According to the National Standard for Tropical Cyclone Grades (GBT 1920 1-2006) issued by China Meteorological Bureau, tropical cyclones are divided into six grades according to the maximum surface wind speed near the center: super typhoon, strong typhoon, strong tropical storm, tropical storm and tropical depression.

2. Typhoon According to the relevant data of typhoon occurrence in recent years, the laws and characteristics of typhoon occurrence mainly have the following points: First, seasonality. Second, it is difficult to accurately predict the landing position of the typhoon center. Third, the typhoon is rotating. Fourth, the damage is serious. Fifth, strong typhoons are often accompanied by heavy rains, tides and tsunamis. Sixth, when a strong typhoon occurs, manpower is irresistible and it is easy to cause casualties.

3. Typhoon crossing the border often brings stormy weather, causing huge waves on the sea surface, which seriously threatens navigation safety. After the typhoon landed, the storm surge may destroy crops and various building facilities, causing great losses to people's lives and property.

References:

Baidu encyclopedia _ Typhoon Baidu encyclopedia _ Typhoon level