What are the grades of weather forecast?

Do you mean the warning signal level of weather forecast? The weather forecast is divided into five levels: red warning, orange warning, yellow warning, blue warning and white warning, among which:

Typhoon warning is divided into red, orange, yellow, blue and white.

1, meaning of typhoon blue warning signal: it may be affected by tropical cyclones within 24 hours, and the average wind force can reach above 6 or gust 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.

2. The meaning of typhoon yellow warning signal: it may be affected by tropical cyclones within 24 hours, and the average wind force may reach 8 or above or the gust 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.

3. The meaning of the orange warning signal of typhoon: it may be affected by tropical cyclones within 12 hours, and the average wind force may be above 10, or the gust10/above; Or have been affected by tropical cyclones, the average wind force 10- 1 1, or the gust112 may continue.

4. The meaning of typhoon red warning signal: It may be or has been affected by typhoon within 12 hours, and the average wind power may be above 12, or it has reached 12 and may continue.

The rainstorm warning signal is divided into three levels, which are represented by yellow, orange and red respectively.

1, meaning of yellow rainstorm warning signal: there may be local rainstorm within 6 hours, or heavy precipitation may continue.

2. The meaning of orange rainstorm warning signal: In the past three hours, the local rainfall has reached more than 50 mm, and the rainfall may continue.

3. The meaning of heavy rain in red warning signal: In the past three hours, the local rainfall has reached more than 100 mm, and the rainfall may continue.

The high temperature warning signal is divided into three levels, which are represented by yellow, orange and red respectively.

1, high temperature yellow warning signal meaning: the weather is sultry. Generally speaking, the maximum temperature will approach or reach above 35℃ within 24 hours.

2, high temperature orange warning signal meaning: the weather is hot. Generally speaking, the maximum temperature will rise above 37℃ within 24 hours.

3, high temperature red warning signal meaning: the weather is very hot. Generally speaking, the maximum temperature will rise above 39℃ within 24 hours.

The cold warning signal is divided into three levels, which are represented by yellow, orange and red respectively.

1, meaning of cold yellow warning signal: It is expected that the local temperature will drop sharply above 10℃ within 24 hours due to the invasion of cold air in the north, or the daily average temperature will remain below 12℃.

2. Meaning of cold wave orange warning signal: Due to the invasion of cold air in the north, it is expected that the local minimum temperature will drop below 5℃.

3. red warning signal meaning of cold wave: affected by the invasion of cold air in the north, it is expected that the local minimum temperature will drop below 0℃.

The hail warning signal is divided into two levels, which are represented by orange and red respectively.

1, meaning of hail orange warning signal: hail may be accompanied by lightning weather within 6 hours and may cause hail disaster.

2. Hail red warning signal Meaning: There is a great possibility of hail accompanied by lightning weather within 2 hours, which may cause a large hail disaster.

Thunderstorm and gale warning signals are divided into four levels, which are represented by blue, yellow, orange and red respectively.

1, blue warning signal of thunderstorm and gale meaning: it may be affected by thunderstorm and gale within 6 hours, and the average wind force may reach above 6, or the gust is above 7 accompanied by lightning; Or it has been affected by thunderstorms and strong winds, and the average wind force has reached 6-7, or the gust is 7-8 accompanied by lightning, and may continue.

2. The meaning of the yellow warning signal of thunderstorm and gale: it may be affected by thunderstorm and gale within 6 hours, and the average wind force may reach 8 or above, or the gust is 9 or above accompanied by strong lightning; Or have been affected by thunderstorms and strong winds, with an average wind force of 8-9, or a gust of 9- 10 accompanied by strong lightning, and may continue.

3. The meaning of orange warning signal of thunderstorm and gale: it may be affected by thunderstorm and gale within 2 hours, and the average wind force is above 10 or gust 1 1 0, accompanied by strong lightning; Or have been affected by thunderstorms and strong winds, the average wind force 10- 1 1, or gust112 accompanied by strong lightning, and may continue.

4. red warning signal meaning of thunderstorm and gale: it may be affected by thunderstorm and gale within 2 hours, and the average wind power can reach more than 12 with strong lightning; Or it has been affected by thunderstorms and strong winds, and the average wind force is above 12 with strong lightning, and it may continue.

The warning signal of road icing is divided into three levels, which are represented by yellow, orange and red respectively.

1, meaning of yellow warning signal for road icing: 12 hours, there may be road icing affecting traffic.

2. The orange warning signal of road icing refers to the road icing that may have a great impact on traffic within 6 hours.

3. Road icing red warning signal Meaning: Road icing that may occur or has occurred within 2 hours has a great impact on traffic.

Forest fire warning signals are divided into three levels, which are represented by yellow, orange and red respectively.

1. Yellow warning signal of forest fire danger Meaning: the forest fire danger level is Grade III. Moderate danger, combustible materials in the forest are easy to burn and forest fires are easy to occur.

2. The meaning of orange warning signal of forest fire danger: the forest fire danger grade is four. Highly dangerous and combustible substances in the forest are easy to burn, and forest fires are prone to occur, and the fire spreads quickly.

3. red warning signal meaning of forest fire risk: the forest fire risk rating is five. Extremely dangerous, combustible materials in the forest are easy to burn, and forest fires are prone to occur, and the fire spreads very quickly.

The fog warning signal is divided into three levels, which are represented by yellow, orange and red respectively.

1, meaning of yellow fog warning signal: 12 hours, fog with visibility less than 500m may appear, or fog with visibility less than 500m and greater than 200m has appeared and may continue. [ 1]

2. Fog orange warning signal meaning: fog with visibility less than 200 meters may appear within 6 hours, or fog with visibility less than 200 meters and greater than or equal to 50 meters has appeared and may continue.

3. Fog red warning signal Meaning: Strong fog with visibility less than 50 meters may appear within 2 hours, or strong fog with visibility less than 50 meters has appeared and may continue.

Haze weather warning signal, expressed in yellow. Meaning:/kloc-smog weather may occur within 0/2 hours, or it has already appeared and may continue.

I wrote for more than half an hour and forgot to adopt it! thank you