What are the types and levels of meteorological disaster warning signals?

1. Typhoon blue warning signal (Grade IV/General): It may or may have been affected by tropical cyclones within 24 hours, and the average coastal or land wind force is above Grade 6, or the gust is above Grade 8 and may continue.

Second, typhoon yellow warning signal (Grade III/heavier): It may or may have been affected by tropical cyclones within 24 hours, and the average wind force along the coast or land is above Grade 8, or the gust 10 is above and may continue.

3. Typhoon orange warning signal (Grade II/Severe): It may be or has been affected by tropical cyclones within 12 hours, and the average wind force along the coast or land reaches 10 or above, or the gust 12 or above and may continue.

4. Typhoon red warning signal (Grade I/extremely severe): It may or may have been affected by tropical cyclones within 6 hours, and the average wind force along the coast or land is above 12, or the gust is above 14 and may continue.

2, rainstorm warning signal

1. Blue rainstorm warning signal (Grade IV/General):/kloc-within 0/2 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

2. yellow rainstorm warning signal (Grade III/heavier): The rainfall will reach more than 50 mm within 6 hours, or it has reached more than 50 mm and the rainfall may continue.

3. Rainstorm orange warning signal (Grade II/Severe): within 3 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

4. Heavy rain in red warning signal (Grade I/extremely severe): within 3 hours, the rainfall will reach 100 mm or above, or it has already reached 100 mm and the rainfall may continue.

3. Blizzard Blue Warning

1. Blizzard Blue Warning Signal (Grade IV/General):/kloc-The snowfall will be more than 4 mm within 0/2 hours, or it will be more than 4 mm and the snowfall will continue, which may have an impact on traffic or agriculture and animal husbandry.

Second, the yellow warning signal of snowstorm (level III/heavier):/kloc-The snowfall will reach more than 6 mm within 0/2 hours, or it has reached more than 6 mm and the snowfall continues, which may have an impact on traffic or agriculture and animal husbandry.

3. The orange warning signal of blizzard (Grade II/Severe): The snowfall will reach10mm or above within 6 hours, or it has reached10mm and the snowfall continues, which may or has already caused a great impact on traffic or agriculture and animal husbandry.

4. Blizzard red warning signal (Grade I/Severe): The snowfall will reach 15 mm or above within 6 hours, or it has reached 15 mm and the snowfall continues, which may or has had a great impact on traffic or agriculture and animal husbandry.

4, cold wave warning signal

1. Cold wave blue warning signal (Grade IV/General): within 48 hours, the minimum temperature drops by more than 8℃, the minimum temperature is less than or equal to 4℃, and the average wind power on land can reach more than Grade 5; Or it has dropped by more than 8℃, the lowest temperature is less than or equal to 4℃, and the average wind power reaches more than 5, which may continue.

Second, cold wave yellow warning signal (Grade III/heavier): within 24 hours, the minimum temperature drops 10℃ or above, the minimum temperature is less than or equal to 4℃, and the average wind power on land can reach Grade 6 or above; Or it has dropped above 10℃, the lowest temperature is less than or equal to 4℃, and the average wind force is above 6, and it may continue.

3. Cold wave orange warning signal (Grade II/severe): within 24 hours, the minimum temperature drops 12℃ or above, the minimum temperature is less than or equal to 0℃, and the average wind power on land reaches Grade 6 or above; Or it has dropped above 12℃, the lowest temperature is less than or equal to 0℃, and the average wind force is above 6, and it may continue.

4. Cold wave red warning signal (Grade I/particularly severe): within 24 hours, the minimum temperature drops 16℃ or above, the minimum temperature is less than or equal to 0℃, and the average wind power on land reaches Grade 6 or above; Or it has dropped above 16℃, the lowest temperature is less than or equal to 0℃, and the average wind force is above 6, and it may continue.

5, strong wind warning signal

1. Gale blue warning signal (Grade IV/General): It may be affected by gale within 24 hours, with an average wind force of above Grade 6 or a gust of above Grade 7; Or have been affected by strong winds, with an average wind force of 6-7, or gusts of 7-8 and may continue.

Second, the yellow warning signal of strong wind (level III/heavier): 12 hours may be affected by strong wind, and the average wind force may reach 8 or above or gust 9 or above; Or it has been affected by strong winds, with an average wind force of 8-9, or a gust of 9- 10 and may continue.

3. Orange warning signal of gale (Grade II/severe): It may be affected by gale within 6 hours, and the average wind power may reach 10 or gust10 or above; Or it has been affected by strong winds, and the average wind force 10 ~ 1 1, or gust1~12 may continue.

4. Gale red warning signal (Grade I/extremely severe): It may be affected by gale within 6 hours, and the average wind force may be above 12 or gust 13; Or have been affected by strong winds, the average wind force is above 12, or the gust is above 13 and may continue.

6, sandstorm warning signal

1. Yellow warning signal of sandstorm (Grade III/heavier):/kloc-sandstorm weather may occur within 0/2 hours (visibility is less than 1000m), or it has already appeared and may continue.

Second, the orange warning signal of sandstorm (Grade II/Severe): Strong sandstorm weather (visibility less than 500m) may occur within 6 hours, or it has already appeared and may continue.

Three. Sandstorm red warning signal (Grade I/Extremely Severe): There may be extremely strong sandstorm weather (visibility less than 50m) within 6 hours, or it has already appeared and may continue.

7, high temperature warning signal

1. High temperature yellow warning signal (Grade III/heavy): the daily maximum temperature will be above 35℃ for three consecutive days.

2. High temperature orange warning signal (Grade II/severe): The maximum temperature will rise above 37℃ within 24 hours.

3. High temperature red warning signal (Grade I/particularly severe): The maximum temperature will rise above 40℃ within 24 hours.

8, drought warning signal

1. orange warning signal of drought (grade Ⅱ/severe): It is predicted that the comprehensive meteorological drought index will reach severe drought in the coming week (meteorological drought will occur once every 25 to 50 years), or more than 40% of crops in a county (district) will suffer from drought.

2. Drought red warning signal (Grade I/Extremely Severe): It is estimated that the comprehensive meteorological drought index will reach extreme drought (meteorological drought once every 50 years) in the coming week, or more than 60% of crops in a county (district) will suffer from drought.

9, lightning warning signal

1. Lightning yellow warning signal (Grade III/Heavy): Lightning activity may occur within 6 hours, which may lead to lightning disasters and accidents.

2. Lightning orange warning signal (level II/severe): lightning activity is likely to occur within 2 hours, or it has been affected by lightning activity and may continue, so lightning disaster is more likely to occur.

Three. Lightning red warning signal (Grade I/particularly severe): There is a high possibility of lightning activity within 2 hours, or strong lightning activity has occurred and may continue, and there is a high possibility of lightning disasters and accidents.

10, hail warning signal

1. Hail orange warning signal (Grade II/severe): Hail weather may occur within 6 hours and may cause hail disaster.

2. Hail red warning signal (Grade I/particularly severe): There is a greater possibility of hail within 2 hours, which may cause a greater hail disaster.

1 1, frost warning signal

1. Frost blue warning signal (Grade IV/General): within 48 hours, the ground minimum temperature will drop below 0℃, which will have an impact on agriculture, or it has dropped below 0℃, which has already had an impact on agriculture and may continue.

Second, the yellow warning signal of frost (Grade III/heavier): within 24 hours, the ground minimum temperature will drop below minus 3℃, which has a serious impact on agriculture, or it has already dropped below minus 3℃, which has had a serious impact on agriculture and may continue.

3. Frost orange warning signal (Grade II/Severe): The minimum ground temperature will drop below minus 5℃ within 24 hours, which has a serious impact on agriculture, or it has already dropped below minus 5℃, which has had a serious impact on agriculture and will continue.

12, fog warning signal

1. Fog yellow warning signal (level III/severe):/kloc-fog with visibility less than 500m may appear within 0/2 hours, or fog with visibility less than 500m and greater than 200m has already appeared and will continue.

2. Fog orange warning signal (Grade II/Severe): Fog with visibility less than 200m may appear within 6 hours, or fog with visibility less than 200m and greater than or equal to 50m has appeared and will continue.

3. Fog red warning signal (Grade I/extremely severe): Fog with visibility less than 50m may appear within 2 hours, or fog with visibility less than 50m has appeared and will continue.

13, road icing warning signal

1. Yellow warning signal of road icing (Grade III/heavy): When the road surface temperature is lower than 0℃ and precipitation occurs, road icing that may affect traffic may occur within 12 hours.

Second, the orange warning signal of road icing (Grade II/Severe): When the road surface temperature is lower than 0℃, precipitation will occur, and road icing which has a great impact on traffic may occur within 6 hours.

Three. Road icing red warning signal (Grade I/particularly severe): When the road surface temperature is lower than 0℃, precipitation will occur, and road icing which has a great impact on traffic may occur or has occurred within 2 hours.

14, smog warning signal

1. Yellow smog warning signal (Grade III/heavier):

Standard: It is expected that one of the following situations may occur in the next 24 hours and continue or the actual situation has reached one of the following situations and may continue:

Haze with visibility less than 3000m and relative humidity less than 80%.

Visibility is less than 3000m, relative humidity is greater than or equal to 80%, and PM2.5 concentration is greater than 1 15 μ g/m3 and less than or equal to 150 μ g/m3.

The visibility is less than 5000m, and the concentration of PM2.5 is greater than150μ g/m3 and less than or equal to 250μ g/m3.

Second, the smog orange warning signal (level II/severe):

Standard: It is expected that one of the following situations may occur in the next 24 hours and continue or the actual situation has reached one of the following situations and may continue:

Haze with visibility less than 2000m and relative humidity less than 80%.

Visibility is less than 2000 meters, relative humidity is greater than or equal to 80%, and PM2.5 concentration is greater than 150 μ g/m3 and less than or equal to 250 μ g/m3.

Visibility is less than 5000 meters, and PM2.5 concentration is more than 250 μ g/m3 and less than or equal to 500 μ g/m3.

Forecast term: it is predicted that severe haze will appear in the next 24 hours, which is easy to form severe air pollution.

Three. Smog red warning signal (Grade I/Extremely Severe):

Standard: It is expected that one of the following situations may occur in the next 24 hours and continue or the actual situation has reached one of the following situations and may continue:

Haze with visibility less than 1000 m and relative humidity less than 80%.

Visibility is less than 1000m, relative humidity is greater than or equal to 80%, and PM2.5 concentration is greater than 250 μ g/m3 and less than or equal to 500 μ g/m3.

Visibility is less than 5000 meters, and PM2.5 concentration is more than 500 μ g/m3.

Forecast terms: it is predicted that there will be severe haze in the next 24 hours, which is easy to form serious air pollution.

15, thunderstorm and gale warning signal

1. Blue warning signal of thunderstorm and gale (Grade IV/General): It may be affected by thunderstorm and gale within 6 hours, and the average wind force may reach Grade 6 or above, or the gust is Grade 7 or above accompanied by lightning; Or have been affected by thunderstorms and strong winds, with an average wind force of 6-7, or gusts of 7-8 accompanied by lightning, and may continue.

Second, the yellow warning signal of thunderstorm and gale (Grade III/heavier): it may be affected by thunderstorm and gale within 6 hours, and the average wind force may reach Grade 8 or above, or the gust is Grade 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. Orange warning signal of thunderstorm and gale (Grade II/severe): It may be affected by thunderstorm and gale within 2 hours, and the average wind force may be above 10, or the gust 1 1 above, 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. Thunderstorm and gale red warning signal (Grade I/particularly severe): It may be affected by thunderstorm and gale within 2 hours, and the average wind power can reach 12 accompanied by 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.