How are typhoons classified? How to distinguish colors?

attribute

Super typhoon (super typhoon)

The maximum average wind speed near the bottom center is ≥ 5 1.0m/s, that is, 16 or more.

violent typhoon

The maximum average wind speed near the bottom center is 41.5-50.9m/s, which is 14- 15.

typhoon

The maximum average wind speed near the bottom center is 32.7-4 1.4m/s, which is 12- 13.

Severe tropical storm

The maximum average wind speed near the bottom center is 24.5-32.6m/s, that is, the wind force is10-1.

tropical storm

The maximum average wind speed near the center of the ground floor is 17.2-24.4m/s, that is, the wind force is 8-9.

tropical depression

The maximum average wind speed near the center of the ground floor is10.8-17.1m/s, that is, the wind force is 6-7.

Red > orange > yellow > according to the approaching time and intensity, the typhoon blue warning signal is divided into four levels, which are represented by blue, yellow, orange and red respectively.

Color: blue meaning: it may be affected by tropical depression within 24 hours, with an average wind force of more than 6 or a gust of more than 7; Or it has been affected by tropical depression, with an average wind force of 6-7, or a gust of 7-8 and may continue. Guide to defense: 1. Prepare for the wind and pay attention to relevant reports and notices; 2, doors and windows, coaming and other structures that are easily blown by the wind, properly place outdoor items. Color: yellow meaning: it may be affected by tropical storms within 24 hours, with an average wind force of more than 8 or a gust of more than 9; Or it has been affected by tropical storms, with an average wind force of 8 ~ 9, or a gust of 9 ~ 10 and may continue. Guide to defense: 1. It is recommended that kindergartens and nurseries be closed; 2. Residents and ships in dangerous areas and dangerous houses should take shelter from the wind, and outdoor workers should stop working; 3, cut off neon lights and dangerous outdoor power supply; 4. Stop open-air collective activities; Other typhoon blue warning signals. Color: orange Meaning: 12 hours may be affected by a strong tropical storm, and the average wind power may reach 10 or above, or the gust 1 1 above; Or have been affected by a strong tropical storm, the average wind force 10 ~ 1 1, or the gust112 may continue. Defense guide: 1, emergency windproof state, it is recommended to suspend classes in primary and secondary schools; 2. Don't go out at will, and ensure that the elderly and children stay in the safest place at home; 3. Relevant emergency departments and rescue units should closely monitor the disaster situation and implement countermeasures; 4. Stop large-scale indoor assembly to evacuate people; 5. Strengthen port facilities; Other same as above. Color: Red Meaning: It may or has been affected by the typhoon within 6 hours, and the average wind power can reach 12 or above 12 and may continue. Defense Guide: 1, especially in case of emergency windproof, it is recommended to suspend business and classes (except for special industries); 2. Personnel should stay in a windproof and safe place as far as possible, and relevant emergency departments and emergency rescue units should be ready to start emergency rescue plans at any time; 3. When the typhoon center passes by, the wind will decrease or stay still for a period of time, so you should continue to stay in a safe place to avoid the wind; Other same as above. Rainstorm warning rainstorm warning signals are divided into yellow, orange and red. Color: yellow meaning: within 6 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue. Guide to defense: 1. Parents, students and schools should pay special attention to weather changes and take preventive measures; 2. Cover the articles that are aired in the open air, and the relevant units should do a good job in drainage and flood control in low-lying and waterlogged areas; 3. Drivers should pay attention to road water and traffic jams to ensure safety; 4. Check the drainage system of farmland and fish ponds to reduce the water level of easily flooded fish ponds. Color: orange meaning: within 3 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue. Defense Guide: 1, suspend outdoor work in open air, and stay indoors or in a safe place to avoid rain as much as possible; 2. Relevant emergency departments and rescue units closely monitor the disaster situation and cut off dangerous outdoor power supply in low-lying areas; 3. Traffic management departments should implement traffic guidance or control in areas with accumulated water; 4. Move dangerous areas and dangerous residents to safe places for shelter from the rain; Other same as above. Color: Red Meaning: The rainfall in 3 hours will reach 100 mm or above, or it has reached 100 mm and the rainfall may continue. Guide to defense: 1. Outdoor personnel should immediately go to a safe place for temporary refuge; 2. Relevant emergency departments and emergency rescue units are ready to start emergency rescue plans at any time; 3. Schools, kindergartens and other relevant units with students and employees should take special protective measures, and units in dangerous areas should suspend classes or suspend business and immediately move to safe places for temporary refuge; Other same as above. High temperature warning High temperature warning signals are expressed in orange and red respectively. Color: orange Meaning: The maximum temperature will rise above 37℃ within 24 hours. Guide to defense: 1. Try to avoid outdoor activities at high temperature in the afternoon, give guidance to the old, weak, sick and young people for heatstroke prevention and take necessary protective measures; 2. Pay attention to prevent power equipment such as wires and transformers from using too much electricity and causing fires due to excessive load; 3. Operators working outdoors or under high temperature conditions should take necessary protective measures; 4. Pay attention to work and rest time, ensure sleep, and prepare some commonly used heatstroke prevention and cooling drugs when necessary; 5, the media should strengthen the propaganda of heatstroke prevention and cooling health care knowledge, and all relevant departments and units should implement heatstroke prevention and cooling safeguard measures. Color: Red Meaning: The maximum temperature will rise above 40℃ within 24 hours. Guide to defense: 1. Pay attention to heatstroke prevention and cooling, and minimize outdoor activities during the day; 2, the relevant departments should pay special attention to fire prevention; 3. It is suggested to stop outdoor open-air operation; Other same as above.