Why does the weather forecast report the weather?

The weather should be reported in the weather forecast, because it helps to make a good weather forecast. The specific reasons are as follows:

When listening to the weather broadcast, there is always a paragraph in the weather forecast that introduces the weather situation at that time, such as the intensity and geographical location of typhoons or high and low pressure centers, the areas controlled by high pressure ridges and low pressure troughs, and the distribution range of rain and snow areas. The meteorological station and the school meteorological team are very concerned about this weather report. Because it can not only make meteorologists understand the large-scale weather situation at that time, but also predict the upcoming atmospheric pressure system in this area, which is helpful to make a good weather forecast in this area.

Typhoon, high and low pressure, cold front, high pressure ridge, low pressure trough, etc. It is all weather systems (including pressure systems). The combination of various weather systems is called weather situation. Every weather system has certain weather phenomena, such as: in high pressure and high pressure ridge, there are more sunny days;

Practice has proved that weather systems are not static, and they tend to move in a certain direction. For example, high voltage generally moves from Mongolia to China and then to Japan; Low pressure moves from west to east; Typhoons often occur in the Pacific Ocean. Once formed, they usually move to the west or northwest. When they are near Taiwan Province Province in China, some of them turn northeast and move to Japan, some continue to move westward into the South China Sea, some continue to move inland after landing on the southeast coast of China, or turn northeast and go out to sea again and move to Japan.

Because the weather system has the law of this movement, in order to make a more correct weather forecast, we must not only master the local meteorological data, but also master the distribution of large-scale weather systems and their strengthening, weakening and movement.

When making weather forecast, we should not analyze the independent motion of a single weather system in isolation, but should make a comprehensive analysis of the surrounding weather systems in order to understand the motion laws of each system. Because the general weather changes are continuous and regional, although the forecast area is only a small area, and the atmosphere moves on the globe of the earth, often moving for one or two thousand kilometers a day, it is necessary to master the positions of various weather systems in a large range in order to make accurate weather forecasts. The weather conditions in the weather forecast provide this content. If we constantly grasp the intensity and historical evolution of each weather system and combine the changes of local meteorological data, we can grasp the laws of weather changes;

How to make use of the weather? After receiving the weather situation report, you can use a national map to record the intensity and location of each weather system on the map. The next time you listen to the weather forecast, you can record the same weather system on this map, so you can calculate the direction, speed and intensity changes of the weather system moving in a certain interval from this map. According to this change law, we can roughly calculate the weather system that will control the local area in the future, and we can also roughly predict the weather in this area. So it is necessary to broadcast the weather in the weather forecast.