Sea surface weather near Shantou

Typhoon warning can be divided into three levels according to the intensity, influence time and degree of numbered tropical cyclones: news warning, warning and emergency warning.

news

When the numbered tropical cyclone is far away from the forecast responsibility area or has not affected the forecast responsibility area, but it is expected to affect the city, a message will be released to report the situation of the tropical cyclone, and a message will also be released when the answer is cancelled.

alarm

It is expected that the numbered tropical cyclone will affect the coastal area of this responsibility area in the next 48 hours or give an alarm when landing.

red alert

It is predicted that the numbered tropical cyclone will affect the coast of this responsibility area in the next 24 years or issue an emergency warning when landing. According to the intensity of numbered tropical cyclones, the specific names can be divided into: tropical storm news, tropical storm warning, strong tropical storm news, strong tropical storm warning, strong tropical storm emergency warning, typhoon news, typhoon warning and typhoon emergency warning.

Extended data:

On August 16, 2004, China Meteorological Bureau issued the Trial Measures for Issuing Early Warning Signals of Sudden Meteorological Disasters, which divided typhoon early warning signals into blue, yellow, orange and red.

1. Blue

It may or has 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. The specific defense policy is as follows:

(1) The government and relevant departments shall prepare for typhoon prevention according to their duties;

(2) Stop outdoor collective activities and dangerous outdoor operations such as high altitude;

⑶ Take active measures for water operations and passing ships in relevant waters, such as returning to Hong Kong for shelter from the wind or detouring.

(4) Add doors and windows, hoardings, scaffolding, billboards and other structures that are easily blown by the wind, and cut off the dangerous outdoor power supply.

3. yellow

It may or has 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. The specific defense policy is as follows:

(1) The government and relevant departments shall prepare for typhoon emergency according to their duties.

(2) Stop outdoor dangerous operations such as indoor and outdoor large gatherings and high altitude.

⑶ Take active measures for water operations and passing ships in relevant waters, strengthen port facilities, and prevent ships from anchoring, grounding and collision.

(4) Reinforce or dismantle structures that are easily blown by the wind. Personnel should not go out at will, ensure that the elderly and children stay in the safest place at home, and the dangerous house personnel should be transferred in time.

[13], orange

12h may be or has been affected by tropical cyclones, and the average coastal or land wind force 10 or gust 12 or above may continue. The specific defense policy is as follows:

(1) The government and relevant departments shall do a good job in typhoon prevention and emergency rescue according to their duties.

(2) Stop large-scale indoor and outdoor gatherings, suspend classes or business (except for special industries).

(3) Relevant emergency departments and emergency rescue units should strengthen their duty, closely monitor the disaster situation and implement countermeasures.

(4) Ships working on water and passing in relevant waters should return to Hong Kong to take shelter from the wind and strengthen port facilities to prevent ships from anchoring, grounding and collision.

5] When adding or removing structures that are easily blown by the wind, personnel should stay in windproof and safe places as far as possible. When the typhoon center passes by, the wind will decrease or stay still for a while. Remember that the wind will suddenly blow, they should continue to stay in a safe place to avoid the wind, and the people in the dangerous house should be transferred in time.

[6] Relevant areas should pay attention to prevent flash floods and geological disasters that may be caused by heavy precipitation.

4. Red

12 hours may be or has been affected by the typhoon, and the average wind power may be above 12, or it has been above 12 and may continue. The specific defense policy is as follows:

(1) When entering the special emergency windproof state, it is recommended to suspend business and classes (except for special industries);

(2) The personnel shall stay in a windproof and safe place as far as possible, and the relevant emergency departments and emergency rescue units shall be prepared to start the emergency rescue plan at any time;

(3) When the typhoon center passes by, the wind will decrease or stay still for a period of time. Remember that strong winds will blow suddenly, and you should continue to stay in a safe place to avoid the wind;

Other orange warning signals of the same typhoon.

(4) Reinforce or dismantle structures that are easily blown by the wind, and personnel shall stay in windproof and safe places (same as orange (5)).

5] Relevant areas should pay attention to prevent flash floods and geological disasters that may be caused by heavy precipitation.

[6] Try not to go out during the typhoon. No.7314 strong typhoon with wind speed of 73m/s is terrible.

Once, you can't stay in a house with a height below 4 floors in a typhoon. If you are really forced to take refuge in high-rise buildings such as urban office buildings, stay away from windows, hide in the middle and high-rise compartments, and prepare enough water and food. Turn off the water, electricity and gas when you leave home.

From the perspective of typhoon, blue warning: need attention; Yellow warning: need to defend; Orange warning: need to avoid; Red alert: need to transfer. Aside from the internationally recognized alarm level, there is a white alarm under the blue alarm, but it is generally not mentioned because of its low level.

Baidu Encyclopedia-Typhoon Warning