What color is the typhoon closed?

When the typhoon is yellow, or orange and red above yellow, classes will be suspended.

Typhoon yellow warning signal: primary and secondary schools, kindergartens and nurseries are closed, and students who have not left school do not have to go to school; Students on their way to and from school should go to a safe place nearby or go home under safe conditions; Under the premise of ensuring safety, schools should properly arrange students (including school buses and boarding houses) and arrange for students to go home from school.

Typhoon orange warning signal: primary and secondary schools, kindergartens and nurseries are closed, and schools should properly arrange boarders.

Typhoon red warning signal: Primary and secondary schools, kindergartens and nurseries are closed, and schools should properly arrange boarders; It is suggested that employers stop work (except for special industries) to provide safe shelter for stranded personnel.

Characteristics of typhoon

Strong seasonality, mostly in coastal areas: typhoons generally occur in July, August and September according to seasons. Disasters mainly involve coastal areas and islands, such as Guangdong, Fujian, Hainan, Taiwan Province and other provinces.

Strong destructive power and great harm: first, the wind speed near the typhoon center can reach more than 100 m/s, and the wind can destroy a large number of houses and facilities; Second, the storm surge, because the central air pressure is very low, strong winds can make the coastal sea water soar, forming a typhoon storm surge, making the waves break through the seawall and the sea water flow backwards; Third, heavy rain. So far, the strongest rainstorm is caused by typhoon, which will lead to flooding and dam failure.

Wide range and heavy casualties: There were three disasters caused by typhoons in the history of the world, with more than 300,000 deaths. From July to September every year, strong winds land in coastal provinces and cities of Chinese mainland, causing property losses and casualties.