Yunnan lacks water.

The area of 899 rivers in six major water systems in Yunnan Province exceeds 100 square kilometers, and the water storage capacity of more than 40 plateau lakes is not less than1480.10.90 billion cubic meters. Moreover, the national average annual precipitation can reach 1.278 mm, which is equivalent to a natural decline of 490 billion cubic meters.

But Yunnan province, which is surrounded by so many water resources, will also be short of water and drought, which is difficult for many people to understand. In fact, although Yunnan is rich in water resources, the overall precipitation is also abundant. However, the distribution of precipitation in Yunnan is quite complicated. For example, the annual precipitation in the southwest, southeast and west is more than that in the northern and central bazi areas. In other words, the precipitation in mountainous areas will be larger than that in river valleys and dam areas, and the precipitation on leeward slopes is not as large as that on windward slopes.

We should know that the occurrence of drought will be affected by natural precipitation to a great extent, and the distribution of groundwater in Yunnan is also very uneven. The trend of less in the east, more in the west and less in the north and more in the south is basically consistent with the distribution of surface water. That is to say, although Yunnan is rich in water resources as a whole, those places with relatively few water resources are prone to drought caused by water shortage once natural precipitation drops sharply and groundwater and surface water reserves are small.

For many office workers, windy and rainy may just mean whether to take an umbrella or add clothes when going out today. But for many people? Eat by the weather? For some farmers, drought means that the crops in the field may be destroyed at one time, and even the daily basic drinking water demand is difficult to meet. This is why farmers pay more attention to weather trends than others. Although they can't stop it from happening, they can try their best to deal with it and minimize the loss.

On the afternoon of May 26th, we can see from Fengyun satellite images that a large area of China can be said? Cloud? It is still relatively large, except for East China and North China, which are a little less, and other regions are basically based on? Cloudy day? Mainly. So the weather in China today is not complicated as a whole.

According to the data of the Central Meteorological Observatory, the main rainfall is concentrated in northwest Yunnan, southeast Tibet and southwest Sichuan. These areas are dominated by moderate to heavy rain, with heavy rain in some areas. But the scope is gradually narrowing, so the pattern of sunny or cloudy days may be more obvious.

Judging from the radar wave in South China, is it scattered? Red wave? There are still many, mainly concentrated in the coastal areas of South China, including the southern coastal areas of Guangdong and the eastern coastal areas of Fujian. By May 27, this wave of rainfall will continue to develop, but the intensity will become moderate to heavy rain, with the strongest rainfall of about 40 mm, and there is still a lot of rainfall in the Pearl River Delta. By the 28th, a new round of rainfall is about to begin.

According to the data of the Central Meteorological Observatory, there will be moderate to heavy rain, local heavy rain or heavy rain, accompanied by strong convective weather such as short-term heavy precipitation in Jiangnan, South China and Guizhou from the night of the 28th to 3 1. This rainstorm in the south has come again, and it is wave after wave.

From the time point of view, this wave of rainfall is the last wave of heavy rainfall in May, lasting for 3 days. By June, June1-June 4, rainfall still developed, with moderate to heavy rain in Jianghuai, northern Jiangnan and northwestern South China, and heavy rain or heavy rain in some areas along the river, which is similar to the rainfall pattern shown by radar waves today.

This also shows that the short-term rainfall has stopped, and there is still a lot of rain behind. It is estimated that in the next 10 day, the accumulated rainfall in most parts of the south of the Yangtze River and northern South China will be 40% to 80% higher than that in the same period of normal years. This is completely pulling the rain in the south? Active period? Well, it also shows that it is a foregone conclusion that there will be more rainfall in the south this year.

Of course, in the next period of time, we can focus on many changes in rainfall in Yunnan. In the first few days of late May, there was basically no rain in Yunnan. Now there has been a rainstorm in northwest Yunnan, and it will continue to escalate and expand by May 27th. Most parts of Yunnan will have moderate to heavy rain, and some areas will have heavy rain. By May 28th, basically, the weather in all parts of Yunnan will change. This is not because friends in Yunnan may never say that it doesn't rain, but in the Yellow River valley, there is still less rain in Shanxi, Henan, Shaanxi and other places, and there is no time to watch a rain at all. However, according to the data of the Central Meteorological Observatory, there is a trend of developing small-scale rainfall in June.

It can also be seen from the recent rainfall distribution of 10 day that almost all the rainfall is in the southern region, and although there is rainfall in the northeast, the overall range is not very large, mainly moderate to heavy rain, but there is more rainfall in South China and Jiangnan, basically reaching the rainfall between100 mm and 250 mm, so it is absolutely no problem to say that there is more rainfall in the south. This is also fully in line with the precipitation instructions issued by the Climate Center before summer. It can also be seen from the back that the rainfall in the south is basically covered by provinces, with less rainfall in the north of the middle and lower reaches of the Yangtze River and more rainfall in the south. This is the total rainfall change. How many southern regions are there? Avoid? Is it raining? It can be said that there are very few.

On the whole, there will be a short period of rainfall in China on May 27th. Stop? State, but on the night of the 28th, a new round of rainfall will start again, and the intensity is very strong. This wave of heavy rainfall will last until the end of May. What should be prepared is still to be prepared. There is more rain this year, which is closest to South China? Dragon boat water? It is also very strong, and it is necessary to avoid the influence of rainfall. Rainy weather is accompanied by strong convective weather. You'd better not go out. This is the basic situation.