How many levels is the typhoon warning? What color is the warning sign?

As of 20 19, 1 1, the typhoon warning is divided into four levels, from low to high, as follows:

1, blue

It may or has been affected by tropical cyclones within 24 hours, and the average wind force along the coast or land is above 6, or the gust is above 8 and may continue.

2. yellow

It may or has been affected by tropical cyclones within 24 hours, and the average wind force along the coast or land is above 8, or the gust is above 10 and may continue.

3. Citrus

12h may be or has been affected by tropical cyclones, and the average coastal or land wind force 10 or gust 12 or above may continue.

4. Red

12 hours may be or has been affected by the typhoon, and the average wind power may be above 12, or it has been above 12 and may continue.

Extended data

Introduce the benefits of typhoon to human beings.

The typhoon brought people abundant fresh water. Typhoon brought a lot of rainfall to the coast of China, the coast of the Sea of Japan, India, Southeast Asia and the southeastern United States.

The tropical and subtropical areas near the equator have the longest sunshine time, and the dry heat is unbearable. If there is no typhoon to dissipate heat in these areas, it will be hotter there and the surface sand shortage will be more serious.

At the same time, the cold zone will be colder and the temperate zone will disappear. There will be no spring city like Kunming in China, no evergreen Guangzhou, and "Beidacang" and Inner Mongolia grassland will no longer exist.

Baidu Encyclopedia-Typhoon Warning

Baidu Encyclopedia-Typhoon