Typhoons are divided into several levels

It is divided into four levels.

Typhoon warnings are divided into four levels: blue, yellow, orange and red. A blue typhoon warning means that the average wind force of a typhoon reaches level 6 or above; a yellow warning means that the average wind force of a typhoon reaches level 8 or above; an orange warning means that the average wind force of a typhoon reaches level 1 or above, and flash floods may occur; and a red warning means that the average wind force of a typhoon reaches level 8 or above. When reaching level 12 or above, people need to be ready to evacuate at any time.