What do the weather forecast signs for strong winds (blue, yellow, orange and red) mean?

The so-called orange warning, blue warning and red warning are the pre-signals of weather forecast. Generally, the forecast of severe weather such as typhoon, rainstorm, high temperature, cold wave, low temperature and cold, thunderstorm and gale is divided into four levels (IV, III, II and I). According to the severity and urgency of the disaster, the colors are blue, yellow, orange and red in turn, and they are marked in Chinese and English, representing general and strong wind respectively.

typhoon warning

Color: blue

Meaning: It may be affected by tropical depression within 24 hours, with an average wind force of above 6 or a gust of above 7; Or it has been affected by the tropical depression, with an average wind force of 6-7, or a gust of 7-8 and may continue.

Color: yellow

Meaning: It may be affected by tropical storms within 24 hours, with an average wind force of more than 8 or a gust of more than 9; Or it has been affected by tropical storms, with an average wind force of 8 ~ 9, or a gust of 9 ~ 10 and may continue.

Color: orange

Meaning: It may be affected by a strong tropical storm within 12 hours, and the average wind force may be above 10, or the gust 1 1 above; Or have been affected by strong tropical storms, the average wind force 10 ~ 1 1, or gust1/kloc-0 ~/2, and may continue.

Color: red

Meaning: It may be or has been affected by the typhoon within 6 hours, and the average wind power can reach more than 12, or it has reached more than 12 and may continue.