What are the weather color warning levels?

Blue Blizzard Warning Signal: The amount of snowfall will reach more than 4 mm within 12 hours, or it has reached more than 4 mm and the snowfall continues, which may have an impact on transportation or agriculture and animal husbandry.

Typhoon blue warning signal: It may or has been affected by a tropical cyclone within 24 hours. The average wind force along the coast or land is above level 6, or the gust is above level 8 and may continue.

Heavy rain blue warning signal: The rainfall will reach more than 50 mm within 12 hours, or it has already reached more than 50 mm and the rainfall may continue.

Frost blue warning signal: The lowest temperature on the ground will drop below 0℃ within 48 hours, which will have an impact on agriculture, or it has already dropped below 0℃, which will have an impact on agriculture and may continue.

Cold wave blue warning signal: the minimum temperature drops by more than 8℃ within 48 hours, the minimum temperature is less than or equal to 4℃, and the average wind speed on land can reach level 5 or above; or it has dropped by more than 8℃, and the minimum temperature is less than or equal to 4℃ 4℃, the average wind force is above level 5 and may continue.

Blue gale warning signal: It may be affected by strong winds within 24 hours, with average winds reaching level 6 or above, or gusts reaching level 7 or above; or it may have been affected by strong winds, with average winds reaching level 6-7 , or gust level 7-8, may continue.

Yellow warning

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 is above level 8, or the gust is above level 10 and may continue.

Heavy rain yellow warning signal: the rainfall will reach more than 50 mm within 6 hours, or has already reached more than 50 mm and the rainfall may continue.

Blizzard yellow warning signal: The amount of snowfall will reach more than 6 mm within 12 hours, or it has reached more than 6 mm and the snowfall continues, which may have an impact on transportation or agriculture and animal husbandry.

Cold wave yellow warning signal: the minimum temperature will drop by more than 10℃ within 24 hours, the minimum temperature is less than or equal to 4℃, and the average wind speed on land can reach level 6 or above; or it has dropped by more than 10℃, and the minimum temperature is less than or equal to 4℃, the average wind speed reaches level 6 or above and may continue.

High wind yellow warning signal: It may be affected by strong winds within 12 hours, with average winds reaching level 8 or above, or gusts above level 7; or it may have been affected by strong winds, with average winds of level 8 to 9, or gusts of level 9 ~Level 10, may last.

High temperature yellow warning signal: the maximum temperature will be above 35℃ for three consecutive days.

Thunder and lightning yellow warning signal: Thunder and lightning activity may occur within 6 hours, which may cause lightning disasters.

Frost yellow warning signal: The minimum ground temperature will drop below 0℃ within 48 hours, which will have an impact on agriculture, or it has dropped below 0℃, which will have an impact on agriculture and may continue.

Deep fog yellow warning signal: Fog with visibility less than 500 meters may occur within 12 hours, or fog with visibility less than 500 meters and greater than or equal to 200 meters has appeared and will continue.

Road icing yellow warning signal: When the road surface temperature is below 0℃, precipitation will occur, and road icing that may affect traffic may occur within 12 hours.

Haze yellow warning signal: One of the following situations may occur in the next 24 hours: (1) Haze with visibility less than 3000m and relative humidity less than 80%. (2) The visibility is less than 3000m and the relative humidity is greater than or equal to 80%, and the PM2.5 concentration is greater than 115 micrograms m3 and less than or equal to 150 micrograms m3. (3) Visibility is less than 5,000 meters, and PM2.5 concentration is greater than 150 microgram cubic meters and less than or equal to 250 microgram cubic meters.

Forest fire danger yellow warning signal: The fire danger is high, the forest fire danger meteorological level is level three, combustible materials in the forest are easy to burn, and forest fires are prone to occur.

Orange Alert

Typhoon Orange Warning Signal: It may or has been affected by a tropical cyclone within 12 hours. The average wind force along the coast or land is above level 10, or the gust is above level 12 and may continue.

Heavy rain orange warning signal: The rainfall will reach more than 50 mm within 3 hours, or has reached more than 50 mm and the rainfall may continue.

Blizzard orange warning signal: The amount of snowfall will reach more than 10 mm within 6 hours, or it has reached more than 10 mm and the snowfall continues, which may or has had a major impact on transportation or agriculture and animal husbandry.

Cold wave orange warning signal: the minimum temperature drops by more than 12℃ within 24 hours, the minimum temperature is less than or equal to 0℃, and the average wind speed on land can reach more than level 6; or it has dropped by more than 12℃, and the minimum temperature is less than or equal to 0℃ ℃, the average wind speed reaches level 6 or above and may continue.

Orange wind warning signal: It may be affected by strong winds within 6 hours, with average winds reaching level 10 or above, or gusts reaching level 11 or above; or it may have been affected by strong winds, with average winds reaching level 10~11. Or the gust level is 11~12, which may continue.

High temperature orange warning signal: the maximum temperature will rise above 37℃ within 24 hours.

Orange thunder and lightning warning signal: It is more likely that lightning activity will occur within 2 hours, or it has been affected by lightning activity and may continue, and it is more likely that a lightning disaster accident will occur.

Orange warning signal: Within 24 hours, the lowest temperature on the ground will drop below -5℃, which will have a serious impact on agriculture, or it has already dropped below -5℃, which will have a serious impact on agriculture and will continue to do so. .

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

Road icing orange warning signal: When the road surface temperature is below 0°C, precipitation will occur, and road icing may occur within 6 hours, which will have a greater impact on traffic.

Orange hail warning signal: Hail may occur within 6 hours, which may cause hail disaster.

Drought orange warning signal: The comprehensive meteorological drought index is expected to reach severe drought in the next week (meteorological drought occurs once in 25 to 50 years), or more than 40% of crops in a county (district) will be affected by drought.

Haze orange warning signal: One of the following situations may occur in the next 24 hours: (1) Haze with visibility less than 2000m and relative humidity less than 80%. (2) Visibility is less than 2,000m, relative humidity is greater than or equal to 80%, and PM2.5 concentration is greater than or equal to 150 micrograms m3 and less than or equal to 250 micrograms m3. (3) Visibility is less than 5,000 meters, and PM2.5 concentration is greater than 250 microgram cubic meters and less than or equal to 500 microgram cubic meters.

Forest fire danger orange warning signal: The fire danger is high, the forest fire danger meteorological level is level four, combustible materials in the forest are easy to burn, forest fires are prone to occur, and the fire spreads quickly.

Orange warning signal: Within 24 hours, the lowest temperature on the ground will drop below -5℃, which will have a serious impact on agriculture, or it has already dropped below -5℃, which will have a serious impact on agriculture and will continue to do so. .

Emergency Alert

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 continued.

Heavy rain red warning signal: The rainfall will reach more than 100 mm within 3 hours, or it has already reached more than 100 mm and the rainfall may continue.

Red warning signal blizzard: The amount of snowfall will reach more than 15 mm within 6 hours, or the snowfall will reach more than 15 mm and the snowfall continues, which may or has already had a major impact on transportation or agriculture and animal husbandry.

Cold wave red warning signal: The minimum temperature will drop by more than 16℃ within 24 hours, the minimum temperature is less than or equal to 0℃, and the average wind speed on land can reach level 6 or above; or it has dropped by more than 16℃, and the minimum temperature is less than or equal to 0℃ 0℃, the average wind speed reaches level 6 or above and may continue.

Red warning signal for strong winds: It may be affected by strong winds within 6 hours, with average winds reaching level 12 or above, or gusts above level 13; or it may have been affected by strong winds, with average winds above level 12, or gusts above level 13. above and may continue.

High temperature red warning signal: the maximum temperature rises above 40℃ within 24 hours.

Red warning signal: 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 a lightning disaster accident.

Thunderstorm and strong wind red warning signal: It may be affected by thunderstorm and strong wind within 2 hours, with an average wind force of more than 12 levels, accompanied by strong thunder and lightning; or it has been affected by thunderstorm and strong wind, with an average wind force of more than 12 levels, accompanied by strong thunder and lightning. , and may continue.

Red warning signal: Fog with visibility less than 50 meters may occur within 2 hours, or fog with visibility less than 50 meters has appeared and will continue.

Road icing red warning signal: When the road surface temperature is below 0℃, precipitation occurs, and road icing may occur or has already occurred within 2 hours, which has a great impact on traffic.

Hail red warning signal: There is a high possibility of hail accompanied by thunder and lightning within 2 hours, which may cause severe hail disaster.

Drought red warning signal: The comprehensive meteorological drought index is expected to reach extreme drought in the next week (meteorological drought occurs more than once in 50 years), or more than 60% of crops in a county (district) will be affected by drought.

Haze red warning signal: One of the following situations may occur in the next 24 hours: (1) Haze with visibility less than 1000m and relative humidity less than 80%. (2) The visibility is less than 1000m and the relative humidity is greater than or equal to 80%, and the PM2.5 concentration is greater than 250 micrograms m3 and less than or equal to 500 micrograms m3. (3) Visibility is less than 5,000 meters and PM2.5 concentration is greater than 500 microgram cubic meters.

Forest fire danger red warning signal: Fire danger is extremely high. The forest fire danger meteorological level is level 5. The combustible materials in the forest are easy to burn, forest fires are prone to occur, and the fire spreads very quickly.