How is a typhoon formed? What's the difference with a hurricane?

Generally speaking, the formation of a typhoon needs to meet the following conditions:

1, to have a broad atmosphere of high temperature and humidity. The temperature and humidity of the bottom atmosphere of the tropical ocean mainly depend on the water temperature of the sea surface, and typhoons can only form on the warm sea surface where the sea temperature is higher than 26 ° C to 27 ° C.

2. There must be a primordial vortex. In this way, in the early stage of typhoon formation, the surrounding air flow will not directly flow into the center of the vortex, which will quickly fill and disappear. In addition, the difference between high and low wind direction and wind speed in the typhoon occurrence area is small, which is also 20. The main reason why typhoons are not easy to produce above latitude.

3. The vertical wind speed should not differ too much, and the relative movement of the upper and lower layers of air is very small, so that the latent heat energy released by water vapor condensation in the initial disturbance is concentrated in the air column in the typhoon eye area, forming and strengthening the warm center structure of the typhoon.

4. Sufficient geosteering force is required, and the use of Earth rotation as a typhoon structure is conducive to the generation of cyclonic vortices. The Earth's steering force approaches zero near the equator and increases toward the North and South poles. Typhoons generally occur about five latitudes above the equator.

Formation reasons:

Typhoons originate in tropical sea surfaces, where temperatures are high and large amounts of seawater evaporate into the air, creating low-pressure centers. As the pressure changes and the Earth itself moves, the incoming air also rotates to form a counterclockwise air vortex called a tropical cyclone. As long as the temperature does not drop, tropical cyclones will get stronger and stronger, and eventually form typhoons.

Typhoons are classified into super typhoon, severe typhoon, typhoon, strong tropical storm, tropical storm and tropical depression.

What's the difference between a typhoon and a hurricane?

There's no difference. It's just the way they call it. All were tropical cyclones with wind speeds of 33 m/s or more.