Typhoon level color four-level order

The four-level color sequence of typhoon levels is blue, yellow, orange, and red.

1. Typhoon blue warning signal

It may be or has been affected by a tropical cyclone within 24 hours. The average wind force along the coast or land reaches level 6 or above, or the gust reaches level 8 or above and may continue. .

2. Typhoon yellow warning signal

It may or has been affected by a tropical cyclone within 24 hours. The average wind force along the coast or land reaches level 8 or above, or the gust reaches level 10 or above and may continue.

3. Typhoon Orange Warning Signal

It may be or has been affected by a tropical cyclone within 12 hours. The average wind force along the coast or land reaches level 10 or above, or the gust reaches level 12 or above and may continue.

4. Typhoon red warning signal

It may be or has been affected by a tropical cyclone within 6 hours. The average wind force along the coast or land reaches level 12 or above, or the gust reaches level 14 or above and may continue. .

Dangers of typhoons

1. Heavy rain: Typhoons have sufficient water vapor conditions, so they are often accompanied by strong convective weather such as heavy rain or heavy rain. Heavy rainfall in a short period of time may cause urban flooding. , landslides, mudslides and other disasters.

2. Strong winds: The strong winds brought by typhoons are one of the main hazards of typhoons. Falling objects from high altitudes, collapse of dangerous buildings, etc. are all accidents that are prone to occur during typhoons and need to be carefully guarded against.

3. Storm surge: Storm surge means that when a typhoon moves towards the land, the sea water will be strongly accumulated towards the coast, and it will be pushed towards the coast with overwhelming force, which may cause the tide to overflow and the sea wall to break. It washed away houses and various construction facilities, flooded towns and farmland, and caused a large number of casualties and property losses.

4. Impact on traffic: The heavy storm and rain brought by the typhoon are simply a disaster for traffic. Not only does it greatly affect road traffic, but also maritime ships and aviation flights are not immune.

Reference for the above content: Baidu Encyclopedia-Typhoon