What are the warning levels of typhoons?

Typhoon blue warning signal: it may be affected by tropical cyclones within 24 hours, with an average wind force of above 6 or a gust of above 7; Or have been affected by tropical cyclones, the average wind force is 6 ~ 7, or the gust is 7 ~ 8 and may continue.

Typhoon yellow warning signal: it may be affected by tropical cyclones within 24 hours, with an average wind force of 8 or above or a gust of 9 or above; Or it has been affected by tropical cyclones, with an average wind force of 8 ~ 9, or a gust of 9 ~ 10 and may continue.

Typhoon orange warning signal: it may be affected by tropical cyclones within 12 hours, and the average wind force 10 or gust10/0 or above; Or have been affected by tropical cyclones, the average wind force 10 ~ 1 1, or the gust1/kloc-0 ~/2 may continue.

Typhoon red warning signal: It may be or has been affected by tropical cyclones within 6 hours, and the average wind force can reach above 12, or it has reached above 12 and may continue.