Four meteorological warnings were issued simultaneously. Color level for issuing weather warning.

At different times, there will be different weather conditions, and when there is some weather, there will be some early warning. It is understood that four meteorological warnings have been issued a few days ago, so what are the four meteorological warnings? What is the color level of weather warning? Next, let's take a look at the national culture of this issue!

Four weather warnings were issued together.

The Central Meteorological Observatory continued to issue yellow warnings for high temperature and heavy rain at 06: 00 on July 17; The Ministry of Water Resources and the China Meteorological Bureau jointly issued a meteorological warning for orange mountain torrents on July 6 18; The Ministry of Natural Resources and China Meteorological Bureau jointly issued the meteorological risk warning of geological disasters on July 6th18th. According to the forecast, from 08: 00 on July 17 to 08: 00 on July 18, there will be heavy rains in parts of southern Huanghuai, most of Jianghuai, most of Hubei and northwestern Hunan.

Weather warning color level (this information is collected from the network, subject to the official)

blue warning

Blue warning signal of blizzard: 12 hours, the snowfall will reach more than 4 mm, or it has reached more than 4 mm and the snowfall continues, which may have an impact on traffic or agriculture and animal husbandry.

Typhoon blue warning signal: 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 6, or the gust is above 8 and may continue.

Blue rainstorm warning signal:/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.

Blue warning signal of frost: within 48 hours, the ground minimum temperature drops below 0℃, which has an impact on agriculture, or has dropped below 0℃, which has already had an impact on agriculture and may continue.

Blue warning signal of cold wave: within 48 hours, the minimum temperature will drop by more than 8℃, the minimum T temperature will be less than or equal to 4℃, and the average wind power on land will reach more than 5; Or it has dropped by more than 8℃, the lowest T temperature is less than or equal to 4℃, and the average wind power reaches more than 5, which can be sustained.

Gale blue warning signal: the average wind force within 24 hours may be above level 6 or gust above level 7; Or have been affected by strong winds, with an average wind force of 6-7, or gusts of 7-8 and may continue.

Yellow warning

Yellow warning signal of typhoon: 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 8, or the gust is above 10 and may continue.

Yellow rainstorm warning signal: The rainfall will reach more than 50 mm within 6 hours, or it has already reached more than 50 mm and the rainfall may continue.

Yellow warning signal of blizzard:/kloc-within 0/2 hours, the snowfall will reach more than 6 mm, or it has reached more than 6 mm and the snowfall continues, which may have an impact on traffic or agriculture and animal husbandry.

Yellow warning signal of cold wave: ozone with hourly average concentration greater than 100ppb may appear in the next 4 hours, or ozone with hourly concentration greater than 100ppb has already appeared and may continue.

Yellow warning signal of strong wind: the average wind force may be above 6 or gust above 7 within 24 hours; Or have been affected by strong winds, with an average wind force of 6-7, or gusts of 7-8 and may continue.

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

Lightning yellow warning signal: lightning activity may occur within 6 hours, which may lead to lightning disasters and accidents.

Yellow warning signal of frost: within 48 hours, the minimum ground temperature will drop below 0℃, which has an impact on agriculture, or it has dropped below 0℃, which has already had an impact on agriculture and continues.

Fog yellow warning signal: Fog with visibility less than 500m may appear within 12 hours, or fog with visibility greater than or equal to 500m will continue.

Yellow warning signal of road icing: When the road surface temperature is lower than 0℃, precipitation will occur, and road icing may occur within 12 hours.

Haze yellow warning signal: Haze with visibility less than 3000m and relative humidity less than 80% may appear in the next 24 hours. Visibility is less than 3000m, relative humidity is more than or equal to 80%, and PM2.5 concentration is more than 1 15 μ g m3 and less than or equal to 150 μ g m3. Visibility is less than 5000 meters, and PM2.5 concentration is greater than 150 μ g cubic meter and less than 250 μ g cubic meter.

Orange alert

Typhoon orange warning signal: it may be or has been affected by tropical cyclones within 12 hours, and the average coastal or land wind force is above 10, or the gust is above 12 and may continue.

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

Blizzard orange warning signal: the snowfall will reach10mm or above within 6 hours, or it has reached10mm and the snowfall continues, which may or has already caused great impact on traffic or agriculture and animal husbandry.

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

Orange warning signal of gale: the average wind force that may be affected by gale within 6 hours can reach more than 10, or the gust 1 1 above; Or it has been affected by strong winds, and the average wind force 10~ 1 1, or gust1~12 may continue.

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

Lightning orange warning signal: there is a great possibility of lightning activity within 2 hours, or it has been affected by lightning activity, and the target can continue, so there is a great possibility of lightning disaster.

Frost orange warning signal: within 24 hours, the ground minimum temperature will drop below minus 5℃, which has a serious impact on agriculture, or it has dropped below minus 5℃, which has a serious impact on agriculture and will continue.

Fog orange warning signal: 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 will continue.

Orange warning signal of road icing: When the road surface temperature is lower than 0℃, precipitation will occur, and road icing which has great influence on traffic may occur within 6 hours.

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

Drought orange warning signal: 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.

Haze orange warning signal: one of the following situations may occur in the next 24 hours: haze with visibility less than 2000 meters and relative humidity less than 80%. Visibility is less than 2000m, relative humidity is more than or equal to 80%, and PM25 concentration is more than150μ g m3 and less than or equal to 250μ g m3. Visibility is less than 5000 meters, and PM25 concentration is more than 250 micrograms cubic meters and less than 500 micrograms cubic meters.

red alert

Typhoon red warning signal: It may or may have been affected by tropical cyclones within 6 hours, with the average wind force 12 or gust 14 above along the coast or land, and it may continue.

Rainstorm in red warning signal: within 3 hours, the rainfall will reach 100 mm or above 100 mm and the rainfall may continue.

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

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

Gale red warning signal: 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.

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

Lightning red warning signal: There is a great possibility of lightning activity within 2 hours, or strong lightning activity has occurred and may continue, so there is a great possibility of lightning disaster.

Frost red warning signal: Within 24 hours, the ground minimum temperature will drop below minus 5℃, which has a serious impact on agriculture, or it has dropped below minus 5℃, which has a serious impact on agriculture and will continue.

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

Road icing in red warning signal, when the road surface temperature is less than 0℃, precipitation will occur, and road icing that has a great impact on traffic may occur or has occurred within 2 hours.

Hail red warning signal: It is more likely that there will be hail with lightning weather within 2 hours, which may cause a big hail disaster.

Drought red warning signal: It is predicted that the comprehensive meteorological drought index will reach very early in the coming week (meteorological drought will occur once every 50 years or more), or more than 60% of crops in a county (district) will suffer early.

Smog red warning signal: One of the following conditions may occur in the next 24 hours: smog with visibility less than 1000m 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 micrograms cubic meters.