What do the icons (blue, yellow, orange, red) that indicate strong winds in the weather forecast mean?
The so-called orange alert, blue alert, and red alert are weather forecast signals. Generally, disaster weather such as typhoons, heavy rains, high temperatures, cold waves, low temperatures and cold temperatures, thunderstorms, strong winds, etc. are forecast. They are generally divided into four levels. (Level IV, III, II, I), according to the severity and urgency of the disaster, the colors are blue, yellow, orange, and red, and are marked in Chinese and English, representing general, relatively serious, serious, and extra serious respectively. This approach was followed by our country in Europe and the United States and only started in the past two years. Generally speaking, above the orange signal, people should not go out and should be prepared for disaster prevention.
Typhoon Warning
Color: Blue
Meaning: It may be affected by tropical low pressure within 24 hours, with average winds reaching level 6 or above, or gusts above level 7 ; Or it has been affected by tropical low pressure, with average winds of level 6 to 7, or gusts of level 7 to 8 and may continue.
Color: Yellow
Meaning: It may be affected by tropical storms within 24 hours, with average winds reaching level 8 or above, or gusts above level 9; or it may have been affected by tropical storms, with average winds reaching level 8 or above; The wind force is level 8 to 9, or the gust is level 9 to 10 and may continue.
Color: Orange
Meaning: It may be affected by a strong tropical storm within 12 hours, with average winds reaching level 10 or above, or gusts above level 11; or it may have been affected by a strong tropical storm. , the average wind force is 10 to 11 levels, or the gusts are 11 to 12 levels and may continue.
Color: Red
Meaning: It may or has been affected by a typhoon within 6 hours, with the average wind reaching level 12 or above, or it has reached level 12 or above and may continue.
Heavy Rain Warning
Color: Yellow
Meaning: The rainfall will reach more than 50 mm in 6 hours, or it has reached more than 50 mm and the rainfall may continue.
Color: Orange
Meaning: The rainfall will reach more than 50 mm in 3 hours, or it has reached more than 50 mm and the rainfall may continue.
Color: Red
Meaning: The rainfall will reach more than 100 mm in 3 hours, or it has reached more than 100 mm and the rainfall may continue.
High temperature warning
Color: Orange
Meaning: The maximum temperature will rise above 37℃ within 24 hours.
Color: Red
Meaning: The maximum temperature will rise above 40℃ within 24 hours.
Dense fog warning
Color: Yellow
Meaning: Dense fog with visibility less than 500 meters may occur within 12 hours, or visibility has already occurred with visibility less than 500 meters, Dense fog greater than or equal to 200 meters may persist.
Color: Orange
Meaning: Dense fog with visibility less than 200 meters may occur within 6 hours, or dense fog with visibility less than 200 meters and greater than or equal to 50 meters has occurred and may continue .
Color: Red
Meaning: Strong dense fog with visibility below 50 meters may occur within 2 hours, or strong dense fog with visibility below 50 meters has already occurred and may continue.
Thunderstorm and strong wind warning
Color: blue
Meaning: It may be affected by thunderstorm and strong wind within 6 hours, with the average wind force reaching level 6 or above, or gust level 7 The above is accompanied by thunder and lightning; or it has been affected by thunderstorms and strong winds, the average wind force has reached level 6-7, or the gusts are level 7-8, accompanied by thunder and lightning, and may continue.
Color: Yellow
Meaning: It may be affected by thunderstorms and strong winds within 6 hours, with average winds reaching level 8 or above, or gusts above level 9 accompanied by strong thunder and lightning; or it may have been affected by thunderstorms and strong winds. Affected by thunderstorms and strong winds, the average wind force reaches level 8-9, or the gust reaches level 9-10, accompanied by strong thunder and lightning, and may continue.
Color: Orange
Meaning: It may be affected by thunderstorms and strong winds within 2 hours, with average winds reaching level 10 or above, or gusts above level 11, accompanied by strong thunder and lightning; or it has been Affected by thunderstorms and strong winds, the average wind force is 10-11 levels, or the gusts are 11-12 levels, accompanied by strong thunder and lightning, and may continue.
Color: Red
Meaning: It may be affected by thunderstorms and strong winds within 2 hours, with average winds up to level 12 or above accompanied by strong thunder and lightning; or it may have been affected by thunderstorms and strong winds, with average winds It is above 12 and accompanied by strong thunder and lightning, which may continue.
Strong wind (except typhoon, thunderstorm and strong wind) warning
Color: blue
Meaning: May be affected by strong wind within 24 hours, the average wind force can reach level 6 or above, or the gust is above level 7; or it has been affected by strong winds, with average wind strength of level 6-7, or gust level 7-8 and may continue.
Color: Yellow
Meaning: It may be affected by strong winds within 12 hours, with average winds reaching level 8 or above, or gusts above level 9; or it may have been affected by strong winds, with average winds of Level 8-9, or gust level 9-10 and may continue.
Color: Orange
Meaning: It may be affected by strong winds within 6 hours, with average winds reaching level 10 or above, or gusts above level 11; or it may have been affected by strong winds, with average winds of Level 10-11, or gust level 11-12 and may continue.
Color: Red
Meaning: A strong wind with an average wind speed of level 12 or above may occur within 6 hours, or a strong wind with an average wind speed of level 12 or above has already occurred and may continue.
Hail Warning
Color: Orange
Meaning: Hail may occur within 6 hours accompanied by thunder and lightning, and may cause hail damage.
Color: red