Representation of each alert level

The expression of various warning levels and meteorological disaster warning signals refer to the early warning information released to the public by meteorological stations affiliated to meteorological authorities at all levels, which plays a key role in our lives. Expressions for the following warning levels.

Indication of each early warning level 1 early warning level: according to the urgency, development trend and possible harm degree, it is divided into level I, level II, level III and level IV.

Warning color: generally, there are four color grades: blue, yellow, orange and red, and the severity increases in turn, indicating average, heavy, serious and particularly serious respectively. Blue is the lowest warning level and red is the highest warning level.

Blue warning:

Blue warning signal of blizzard: 12 hours, the snowfall will reach more than 4 mm, or it has reached more than 4 mm and the snowfall continues, which may have an impact on traffic or agriculture and animal husbandry.

Typhoon blue warning signal: it may or may have 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.

Blue rainstorm warning signal:/kloc-within 0/2 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

What color does each warning level represent the weather warning signal, and what level does it represent?

There are four kinds of weather warning signals: blue, yellow, orange and red, which respectively represent normal, severe, serious and particularly serious.

Meteorological warning level is an early warning level set according to the severity and urgency of disasters, which is expressed by specific signs.

Early warning signals are divided into eleven categories, such as typhoon, rainstorm, high temperature, cold wave, fog, thunderstorm and gale, gale, sandstorm, hail, blizzard and road icing.

According to the characteristics and early warning ability of different disasters, the early warning grades and standards of different disasters are determined.

When a variety of meteorological disasters occur or are expected to occur at the same time, a variety of early warning signals can be issued simultaneously according to the corresponding standards.

Regional characteristics of early warning signals:

Early warning management schemes are basically the same throughout the country. However, different provinces (municipalities and autonomous regions) have different standards for the same or different types of early warning.

A meteorological element constitutes a meteorological disaster in one place, but it is not necessarily a meteorological disaster in another place, which may be caused by the different types and times of early warning regulations. The warning standards of cold wave, frost and low temperature vary greatly from place to place.

When the early warning comes into effect, the specific measures shall be subject to those issued by the Meteorological Observatory, and corresponding countermeasures shall be taken according to the instructions of television and radio.

In addition to early warning signals, there are other different early warning signals in various places, such as cold wave warning (Guangdong, etc.). ), snow disaster warning (Qinghai, etc. ), early warning signals such as heavy snow warning and road ice and snow warning (Northeast China).

Meteorological stations in coastal areas will also issue marine meteorological warnings specifically for marine areas. Please refer to the website of the meteorological department of the province (municipality directly under the central government, autonomous region) for specific meanings, countermeasures and specific meanings.

In addition to meteorological warning signals, meteorological stations may also issue environmental, geological, forest, marine, health and other types of warning signals, because many areas of early warning release platforms are in meteorological stations.

Representation of various warning levels 3 How many levels of weather warning are there?

Thirteen kinds of weather warning signals, such as typhoon, rainstorm, lightning and high temperature, are blue, yellow, orange and red respectively. Blue is the lowest grade and red is the highest grade, which means that the bad weather in Chengdu is the most serious, from low to high. There are different weather warnings in different seasons and different time periods.

First, taking the high temperature warning in summer as an example, four grades of blue, yellow, orange and red are generally issued.

Take summer high temperature warning as an example. Generally, there are three grades of yellow, orange and red. Orange means that the maximum temperature rises above 37 degrees Celsius within 24 hours. When the red warning is the hottest, it is prone to sunburn and fire hazards, and the maximum temperature rises above 40 degrees Celsius. Therefore, when people see the notice issued by the meteorological department, they should pay attention to vigilance, prevent the safety of life and property caused by bad weather, pay attention to sun protection and pay attention to fire hazards.

Two, take the rainstorm warning as an example, generally release four grades of blue, yellow, orange and red.

When the rainstorm reaches red warning signal, it means that within three hours, the accumulated rainfall may exceed 100 mm or have exceeded 100 mm and may continue to rise, while the water depth of 100 mm basically does not exceed the ankle position of adults. In fact, the accumulated rainfall in 24 hours reached 100 mm and reached the level of torrential rain, and the rainstorm was red.

When the rainfall is heavy, the soil in the valley will become soft under the scouring of rain, which is easy to cause secondary injuries, mudslides and landslides. The reservoir will also be in a state of emergency, and the department should do a good job in emergency rescue of rainstorm. Within the scope of all units, schools, companies, etc. Business should be stopped immediately and countermeasures should be taken.

Three, take typhoon warning as an example, generally released blue, yellow, orange, red four grades.

When the typhoon arrives, it will reach the red warning, indicating that there will be strong typhoons and super typhoons landing in China. Once the typhoon warning is issued, it means entering an emergency windproof state, and countermeasures need to be taken to ensure the safety of life and property.

When the weather warning reaches the red warning, everyone should take major preventive measures.