How long is the rainy season in Wuhan? Will there be heavy rain in Wuhan tomorrow?

Now that Wuhan has entered rainy weather, it will continue to rain, so friends should pay more attention. The weather forecast shows that there will be a rainstorm tomorrow and Friday. Remember to take an umbrella when you go out, go home early at night, and be careful of the rainstorm.

How long?

Meiyu time in the middle reaches of the Yangtze River: June 8, 2008, May 9 this year, and will last until mid-July.

Changmeiyu

The normal plum rains in the middle and lower reaches of the Yangtze River began in mid-June and ended in mid-July, that is, they occurred in the two solar terms of "Mangzhong" and "Summer Solstice". The rainy season lasts about 20-30 days, and the rainfall is between 200-400 mm. Before and after the "summer heat", the main rainfall belt moves northward to the Yellow River and Huaihe River basins, and then to Shandong and North China. The rainy and humid weather in the Yangtze River basin began to turn into sunny, hot and rainy summer. According to statistics, this normal plum rain accounts for about half of the total.

Zaomeiyu

In some years, plum rains come early and suddenly come in late May and early June. Meteorologically, the plum rain that started before "Mangzi" is generally called "early plum rain". The early plum rains will bring some abnormal phenomena. For example, in the early days of Meiyu, cold air from the north is still very frequent in the atmosphere near the ground, so the temperature is still relatively low or even cold after the rainy day begins. That's what the agricultural proverb says: "Eat your palm at the Dragon Boat Festival and freeze it three times". At the same time, there is no obvious damp phenomenon.

Farmers in some areas in the middle and lower reaches of the Yangtze River call Huang Meiyu, where the temperature is relatively low, "cold water Huangmei". In the future, with the extension of rainy days and the strengthening of warm and humid air, the temperature will gradually increase, the humidity will increase, and the inherent characteristics of Meiyu will become more and more obvious. The chance of early plum rain is roughly once in ten years. This kind of early plum rain often presents two situations. One is to start early, end late, or even end in late July. The rainy season lasts 40 to 50 days, and some years last for two months. The other is to start early and finish early. By the end of June, the middle and lower reaches of the Yangtze River had entered midsummer. Due to the early arrival of midsummer, droughts of different degrees often occur in the middle and lower reaches of the Yangtze River.

Chi Meiyu

Contrary to early meiyu, late meiyu is usually called late meiyu in meteorology. There are more opportunities for late meiyu than early meiyu.

Because the solar term of red plum rain starts late, once the warm and humid air flows northward, its influence will be very strong. At the same time, the solar radiation is also strong, and the air is prone to strong convection after being heated, so there are often thunderstorms and showers in the plum rain.

People also call this kind of Huang Meiyu "Huangmei". Meiyu generally does not last long, with an average of only about half a month. However, the rainfall of this plum rain is sometimes quite concentrated.

Special plum rain

During the period of 1954, a once-in-a-century flood occurred in the Jianghuai basin of China, which was caused by a particularly long-lasting plum rain. There was a lot of spring rain in the second half of May before the beginning of Meiyu in the middle and lower reaches of the Yangtze River this year. Meiyu came early again and began in early June. The weather has been raining continuously, with occasional heavy rain and rainstorm, which lasts for a very long time. It was not until the beginning of August that "plum blossom" appeared. When the rainy weather ended and turned into summer weather, it was close to "beginning of autumn". This year, the whole rainy season lasted for two months, and with the spring rain in May, it reached more than two and a half months. After entering the "midsummer" and "hot summer", the middle and lower reaches of the Yangtze River should be a sunny and hot "summer", but it is always gloomy and difficult to see the sun. The pouring rain poured down from time to time, and many areas were flooded, and the "cold" attacked people.

In this year, the rainfall in the middle and lower reaches of the Yangtze River from May to July generally reached 800- 1000mm, which is close to the annual rainfall in normal years in this area. The rainfall in some areas is as high as 1500-2000mm, which is equivalent to the rainfall in the same area for one and a half years, leading to flooding. China is a vast country with frequent local floods. Some may be caused by typhoon rainstorm, and some may be caused by several consecutive rainstorms brought by other weather systems, but their duration is not long, the flood recedes quickly, and the influence range is relatively small. Like 1954, rainy days for more than two months in a row are extremely rare, leading to flooding in the whole Yangtze River basin. This rare flood is usually associated with abnormal plum rains. Like the flood in 1998, it was also because of a particularly long plum rain.

Will there be a rainstorm tomorrow?

Yes, there will be heavy rain and strong wind this Friday! It will rain at the weekend. The worst thing is that it will rain the week after the cloudy day on July 2, that is, from July 3 to July 10.