What are the stages of early warning?

What are the stages of early warning

There are some warning slogans around us, and can we all understand the meaning of these slogans and distinguish them well? What are the types, colors and stages of early warning of common natural disasters in China? What are the stages of early warning? 1

According to the degree of harm, urgency and development trend that meteorological disasters may cause, the warning signals are generally divided into four levels: IV (general), III (heavier), II (serious) and I (particularly serious), which are indicated by blue, yellow, orange and red in turn.

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The early warning signals of sudden meteorological disasters include: typhoon, rainstorm, blizzard, cold wave, gale, sandstorm, high temperature, drought, thunder and lightning, hail, frost, fog, haze, road icing, thunderstorm and gale, forest fire

The types of early warning signals of meteorological disasters have increased from 3 to 11, which is familiar to people. Meteorological disaster warning signals are marked in both Chinese and English, which

are consistent with all emergency treatment levels and colors of the country. The black warning signal of typhoon, rainstorm and cold will become history, with red as the highest level. What are the stages of early warning? 2

What are the levels of emergency early warning?

Early warning of emergencies refers to early warning information such as natural disasters, accident disasters and public health incidents that suddenly occur or may occur, have caused or may cause serious social harm and need to be dealt with by emergency measures.

the basic ideas and principles of early warning management are based on the system non-optimal theory and cybernetics in system theory. The principle of early warning management is that early warning managers establish different early warning monitoring indicators and monitoring indicator standards according to early warning objectives, and use these standards to control the early warning management objects. Through the detection information obtained by early warning institutions or personnel, the actual situation of early warning indicators is fed back by early warning managers, which provides reference for early warning managers to implement pre-control countermeasures.

after comparing the feedback information with the early warning target, the managers will correct the standards and improve measures according to the difference between them, and start a new round of early warning control process again. Through this round of continuous adjustment and control, the pre-control in early warning management can be realized, and finally the actual plan of the system will approach the planned early warning target, so that the managed object will always be in a safe state.

The purpose of early warning analysis in emergency management is to inform people of possible events or the deterioration of events, so that people can take some effective measures in advance to nip possible emergencies or possible deterioration in the bud.

The problem is how to judge possible events according to the changing trend of relevant information. There are usually multiple indicators for early warning. For example, the infection of some diseases occurs in a certain range of temperature and humidity. Therefore, the early warning analysis of single index is to investigate the possibility that the index exceeds a certain threshold, while the early warning analysis of multi-index is to investigate the stages in which the possibility early warning of the point in the N-dimensional space where these index values are located is divided into. 3

The release of disaster early warning has four levels.

Disaster warning is the warning information released by meteorological stations to the public, which is generally divided into blue, yellow, orange and red. The details are as follows:

Blue is the lowest level warning, which means that the disaster will cause certain losses to the local area, and it comes late, while red is the highest level warning, which means that the disaster will cause great losses to the local area.

the four levels of meteorological disasters are: blue warning, yellow warning, orange warning and red warning. These four warnings correspond to 14 meteorological disasters, namely typhoon, rainstorm, blizzard, cold wave, gale, sandstorm, high temperature, drought, lightning, hail, frost, fog, haze, road icing and so on. Under different conditions, there will be different ways to use early warning, and the specific meaning of early warning representatives is also different.

the blue warning represents the lowest level, indicating that the disaster will cause certain losses and come late. Red warning is the highest level, which means that disasters will cause serious losses and will happen soon, so it needs to be defended immediately.

According to the impact and harm degree of each disaster meteorology, only two, three or four warning signals with different levels are issued respectively. For example, typhoons, rainstorms, blizzards, and strong winds have a wide range of influences and high frequency, and their release ranges from general blue warning, heavier yellow warning, and severe orange warning to particularly serious red warning.

However, disasters such as sandstorm, high temperature, thunder and lightning, fog and road icing will only have an impact on the public when they are serious, so only three levels of warning are issued: yellow, orange and red.