Differentiation of weather warning colors

Typhoon warning signal:

(1) Typhoon white warning signal

Meaning: It may be affected by a tropical cyclone within 48 hours.

(2) Typhoon blue warning signal

Meaning: It may be affected by a tropical cyclone within 24 hours, with average winds reaching level 6 or above, or gusts above level 7; or it may have been affected by tropical cyclones within 24 hours. Affected by tropical cyclones, the average wind force is 6 to 7 levels, or the gusts are 7 to 8 levels and may continue.

(3) Typhoon yellow warning signal

Meaning: It may be affected by tropical cyclones within 24 hours, with average winds reaching level 8 or above, or gusts above level 9; or it may have been affected by tropical cyclones within 24 hours. Under the influence of cyclone, the average wind force is level 8 to 9, or the gust is level 9 to 10 and may continue.

(4) Typhoon Orange Warning Signal

Meaning: It may be affected by a tropical cyclone within 12 hours, with average winds reaching level 10 or above, or gusts above level 11; or it may have been affected by tropical cyclones within 12 hours. Affected by the cyclone, the average wind force is 10 to 11 levels, or the gusts are 11 to 12 levels and may continue.

(5) Typhoon red warning signal

Meaning: It may or has been affected by a typhoon within 12 hours, and the average wind force can reach level 12 or above, or it has reached level 12 or above and may continue .

Heavy rain warning signal:

(1) Heavy rain yellow warning signal

Meaning: Heavy rain may occur locally within 6 hours, or heavy precipitation may continue .

(2) Heavy rain orange warning signal

Meaning: In the past 3 hours, local rainfall has reached more than 50 mm, and the rain may continue.

(3) Heavy rain red warning signal

Meaning: In the past 3 hours, local rainfall has reached more than 100 mm, and the rainfall may continue.

Cold warning signal:

(1) Cold yellow warning signal

Meaning: It is expected that due to the invasion of cold air from the north, the local temperature will drop sharply by 10% within 24 hours ℃ or above, or the daily average temperature remains below 12 ℃.

(2) Cold orange warning signal

Meaning: It is expected that due to the invasion of cold air from the north, the local minimum temperature will drop below 5℃.

(3) Cold red warning signal

Meaning: It is expected that due to the invasion of cold air from the north, the local minimum temperature will drop below 0℃.

Thunderstorm warning signal:

Thunderstorm warning signal, indicated in yellow.

Meaning: Thunderstorms are expected to occur anywhere in the city within 2 hours, or thunderstorms are affecting and will continue for a period of time.

Dense fog warning signal:

(1) Heavy fog yellow warning signal

Meaning: Dense fog with visibility less than 500 meters may occur within 12 hours, or Dense fog with visibility less than 500 meters and greater than or equal to 200 meters has appeared and may continue.

(2) Heavy fog orange warning signal

Meaning: Dense fog with visibility less than 200 meters may occur within 6 hours, or visibility has already occurred with visibility less than 200 meters and greater than or equal to 50 meters. Dense fog may persist.

(3) Heavy fog red warning signal

Meaning: Strong dense fog with visibility lower than 50 meters may occur within 2 hours, or strong dense fog with visibility lower than 50 meters has already occurred Fog may persist.

High temperature warning signal:

(1) High temperature yellow warning signal

Meaning: The weather is muggy, which generally means that the maximum temperature within 24 hours will be close to or reach 35℃ Or has reached above 35℃.

(2) High temperature orange warning signal

Meaning: Hot weather generally means that the maximum temperature will rise above 37°C within 24 hours.

(3) High temperature red warning signal

Meaning: The weather is extremely hot, which generally means that the maximum temperature will rise above 39°C within 24 hours.

Haze weather warning signal:

Haze weather warning signal, indicated in yellow.

Meaning: Haze weather may occur within 12 hours, or haze weather has already occurred and may continue.

PS: The flood level is marked as, its meaning is: AAA is the name of the measuring station, BBB is the number of the super-alert water level in the embankment section (unit is meters), CCC is the average water level of the current embankment (Pearl Base Elevation, in meters), is the water wave line. When the water wave line changes from white to red, it indicates that the dangerous water level has been reached.