What does the yellow warning mean? What do you mean by the red and orange rainstorm warnings that you often hear? Let's first understand the meaning of these signs and the corresponding countermeasures.
Typhoon warning signal
1 Typhoon White Warning Signal
When the Meteorological Bureau issued the "Typhoon White Warning Signal", it indicated that it might be affected by tropical cyclones within 48 hours.
Precautionary measures for citizens: Pay attention to the typhoon information released by the media, keep abreast of the typhoon dynamics, don't play in the typhoon path area or swim on the beach, don't sail out to sea, and make various preparations for wind protection in advance.
2 Typhoon blue warning signal
When the Meteorological Bureau issued the "Typhoon Blue Warning Signal" and started the Class IV emergency response, it indicated that it might be affected by the typhoon within 24 hours, with an average wind of 6-7 and a gust of 8.
Precautionary measures for citizens: keep abreast of the dynamic information of typhoons, do not play in the areas where typhoons pass or swim on the beach, do not sail out to sea, and prepare for the wind as soon as possible.
3 typhoon yellow warning signal
When the Meteorological Bureau issued the "Yellow Warning Signal for Typhoon" and started the Class III emergency response against typhoon, it indicated that it might be affected by typhoon within 24 hours, with an average wind of 8-9 and gust 10.
Precautionary measures for citizens: measures should be taken to strengthen doors and windows to prevent heavy rain, leakage, lightning and falling objects. People in dangerous areas should cooperate to prepare for evacuation to shelters and reduce outdoor activities.
4 Typhoon orange warning signal
When the Meteorological Bureau issued the "Typhoon Orange Warning Signal" and started the typhoon level II emergency response, it indicated that it might be affected by the typhoon within 12 hours, with the average wind force above 10 and the gust above 1 1.
Precautionary measures for citizens: measures should be taken to strengthen doors and windows to prevent heavy rain, electricity leakage, lightning and falling objects. People in dangerous areas should evacuate to shelters to avoid danger and try not to go out. People who go out should take risks nearby.
5 Typhoon red warning signal
When the Meteorological Bureau issued "Typhoon red warning signal" and started the Class I emergency response against typhoon in Zhongshan City and the national mobilization order against typhoon, it indicated that the typhoon may affect or have affected within 12 hours, and the average wind power may reach more than 12 (the maximum wind power in the typhoon center reaches 45m/S), or it may reach more than1and may continue.
The implementation of "three stops" within the city, that is, suspension of work (industry), suspension of market and suspension of classes. In addition to special industries and emergency personnel, personnel of enterprises and institutions, the masses and people who go out need to take refuge nearby and do not go out at will.
Precautionary measures for citizens: Take measures to strengthen doors and windows, prevent heavy rain, leakage, lightning and falling objects, avoid danger nearby and don't go out at will.
The typhoon is coming "ten don't"
First, don't go out;
Second, don't stay under dangerous houses, work sheds, shacks, temporary structures, construction machinery, scaffolding, telephone poles, trees, billboards, iron towers and eaves;
3. Don't walk on banks, seawalls or bridges;
Fourth, don't stay at the seaside, riverside, hillside or low-lying places;
5. Don't take shelter from the wind and rain in underground parking lots and underground passages;
6. Don't stay on fishing boats and rafts;
Seven, don't stay in tourist attractions;
Eight, don't use household appliances when there is lightning;
Nine, don't get close to the wires broken by the wind;
Ten, don't stay in any other place that may endanger personal safety.
Second, the rainstorm warning signal
1 yellow rainstorm warning signal
When the Meteorological Bureau issued a "yellow rainstorm warning signal", it indicated that there might be rainstorm within 6 hours, or heavy precipitation might continue.
Precautionary measures for citizens: pay attention to the rainstorm information released by the media and keep abreast of the rainstorm dynamics.
2 rainstorm orange warning signal
When the Meteorological Bureau issued the "rainstorm orange warning signal", it showed that the local rainfall has reached more than 50 mm in the past three hours, and the rainfall may continue.
Precautionary measures for citizens: pay attention to the rainstorm information released by the media, keep abreast of the rainstorm dynamics, adjust travel plans, minimize going out and go home as soon as possible; Close the doors and windows to prevent rainwater from entering the room.
3 Red rainstorm warning signal
When the Meteorological Bureau issued "Rainstorm red warning signal", it showed that the local rainfall had reached 100 mm in the last three hours, and the rainfall may continue.
Civil defense measures: outdoor personnel should try to find a safe place to shelter from the rain and pay attention to prevent lightning strikes; People in dangerous houses need to be evacuated.
During the rainstorm, how to prevent disasters and avoid risks?
First, stay away from the river. During the rainstorm, the water level of the river can easily soar in a short time. Originally shallow rivers are very easy to become fatal hidden dangers. In particular, residents living in dangerous houses by the river should organize the transfer in advance.
Second, stay away from dangerous slopes, retaining walls and other areas. Rainstorm easily leads to the collapse of slopes and retaining walls, resulting in personal injury.
Third, pay attention to guilt. If you encounter waterlogging during driving, you can't risk wading through, otherwise it will easily cause the vehicle to stall and people to be trapped. If you encounter flameout, you should abandon the car and escape at the first time and call the police for help.
4. Other hazards that can't be ignored, such as high-voltage electric towers, large billboards, big trees and surrounding temporary buildings, may be dangerous during the rainstorm.
Third, the flood warning signal
1 flood blue warning signal
When the "blue flood warning signal" is issued by the Third Prevention Office, it means that a general flood occurs in the lower reaches of the basin once every 5 to 20 years (the flood frequency value includes the lower limit but does not include the upper limit);
Citizen's defense measures: pay attention to the flood information released by the media, keep abreast of flood dynamics, adjust travel plans, minimize going out and go home as soon as possible; Prepare for flood control.
2 flood yellow warning signal
When the "Yellow Warning Signal of Flood" was issued by the Sanfang Office, it indicated that a flood occurred in the lower reaches of the basin once every 20 to 50 years. There is a major danger in the dike, which may be breached or has been breached.
3 Flood orange warning signal
When the "orange warning signal of flood" is issued by the third prevention office, it means that a catastrophic flood with a frequency of more than 50 ~ 100 occurs in the lower reaches of the basin;
Civil defense measures: outdoor personnel should try to find a high safety zone to avoid floods; People in dangerous buildings should be evacuated to safety in time.
4 Flood red warning signal
When the "Flood red warning signal" was released by the Third Prevention Office, it was shown that the catastrophic flood occurred in the lower reaches of the basin with a return period of 100 years or more.
How to save yourself in case of flood?
First, threatened by floods, if there is enough time, it is necessary to organize the transfer to hillsides and highlands; Ships, rafts, door panels, wooden beds, etc. It should be used for water transfer as much as possible.
Second, when the flood comes too fast to move, you should immediately climb the roof, tall buildings, big trees and high walls, take temporary shelter and wait for rescue. Don't swim alone.
Third, it is found that the high-voltage tower is toppled, and the wires are drooping or broken; Stay away from danger, don't touch or get close to it to prevent electric shock.