What is the reason for the typhoon level from low to high?

The typhoon grades from low to high are tropical depression, tropical storm, strong tropical storm, typhoon, strong typhoon and super typhoon.

1, tropical depression

Tropical depression is a low pressure system formed in tropical ocean. Tropical depression is a kind of tropical cyclone. It belongs to the weakest level of tropical cyclone intensity.

2. Tropical storms

Tropical storm is a kind of tropical cyclone, which refers to the tropical cyclone with the maximum ground wind force of 8-9 near its center.

3. Strong tropical storm

Strong tropical storm is a kind of tropical cyclone, and the sustained wind force near its center is 88 to 1 17 km per hour, which is the storm-level wind force.

4. Typhoon

Typhoon is a kind of tropical cyclone. Tropical cyclone is a low-pressure vortex that occurs on the surface of tropical or subtropical ocean, and it is a powerful and profound "tropical weather system".

5. Strong typhoon

A strong typhoon refers to a tropical cyclone with the maximum wind force of 14 to 15 near the center. When the strong typhoon continues to strengthen, it will become a super typhoon. If the intensity of a strong typhoon weakens, it will become an ordinary typhoon.

6. Super typhoon

Super typhoon is the strongest level in tropical cyclone. When the wind speed is greater than 5 1.0 m/s, it is called a super typhoon, and the maximum wind speed can reach more than 300 kilometers per hour.

Baidu Encyclopedia-Super Typhoon