Introduction: On July 6 this year, the day of the summer "out of the plum", as the old saying goes, "I am afraid of the thunder and rain", what is the sign of thunder and rain on the day of the plum? Will there be a big flood after the "plum blossom" this year? Is it early or late? Let's find out!
"In the Huangmei season, it rains at home, and the grass pond is full of frogs. There is an appointment not to come for the night and a half, and the chess pieces are idle and the lights are dropped. This is "The Guest" written by Zhao Shixiu in the Southern Song Dynasty. As a northerner, I always thought that the "rainy season" in the south was a continuous drizzle, but I didn't know until this year that the rainy season in the south of the Yangtze River was heavy rain and torrential rain.
Judging from the recent weather in Anhui, Zhejiang, and Jiangxi, we know that "Meiyu" also has a name called "Violent Mei". From the degree of harm, it is not worse than a typhoon, it is really "violent", it is said to be down, it is overwhelming, the momentum is huge, it only takes a few minutes to make the road water flow into a river, the field is full of water, which is completely different from the description in the ancient poem, it is said that the 1998 Yangtze River basin flood is the "violent plum" caused by the disaster!
It stands to reason that the rainy season is coming to an end in July, but judging from the current weather, the rainy belt is still stranded in the Yangtze River basin, and the power is not small. No, even the Central Meteorological Observatory has issued the highest level of rainstorm warning signal, which is still relatively rare.
There are many reasons why the rainy season in the south of the Yangtze River is so fierce this year, the most important of which is that the passage of the high-altitude trough in the north brings cold air to the south. The warm and humid airflow in the south is strong, the water vapor conditions are too sufficient, and the cold and warm air converge evenly and show a see-saw state, resulting in the Meiyu belt being stranded in the Yangtze River Basin, resulting in the invasion of heavy rainfall in Anhui, Zhejiang, Jiangxi, Hubei, Hunan and other places.
Meiyu has been "into the plum" and "out of the plum" since ancient times, for example, in the ancient book "Shenshu Sutra" mentioned: "After the mango is planted, it is every time it enters the plum, and after the summer heat, it does not come out of the plum." This means that the first "C-day" after the solar term is the beginning of the rainy season, and the rainy season ends on the first "day of the summer".
This is the judgment method of the ancients, and now the judgment method of meteorology is more complicated, and it is necessary to combine a lot of meteorological data. To put it simply, if it rains in the middle and lower reaches of the Yangtze River in the middle and lower reaches of the Yangtze River for 6 days, and the average temperature of the "wait" for 5 days is above 22 °C, it is considered "Mei". If it rains for less than 2 days in 5 days, the daily maximum temperature rises to more than 30°C, and the southerly wind speed on the ground increases, it will be considered a "plum season".
From the point of view of the method of judgment, the current method is more scientific, but you find that the annual rainy season, the time of "entering the plum" and "leaving the plum", the judgment of the ancient times and the judgment of the current meteorology, the time difference is only a few days. It is enough to show that the methods of the ancients are also very accurate, and they are the crystallization of the experience summarized by the ancients through observation for thousands of years, and they are not outdated as a reference.
According to the ancients' method of "not coming out after a small summer". This year's plum blossom day is on July 6 of the Gregorian calendar, the first day of the lunar calendar Xinwei month (the first day of June), which is also the day of the Xiaoxia solar term. Therefore, this year's Xiaoxia and "Izumei" met.
What does the old saying "fear of merry and rain" mean? What are the signs of thunder and rain on the day of Izumei? Look at what the agricultural proverbs left by our ancestors say!
First, Xiaoxia thundered and turned into an inverted yellow plum
According to the experience of the ancients, if there is thunder or thunderstorm on the day of the summer festival, then it indicates that the weather may be rainy and rainy next, even if it is a day of "plum", it is equivalent to not "plum".
This year, there is a greater possibility of "a thunderstorm in the Yangtze River basin, and it is more likely to be a yellow mold", and the rainy weather may continue for a while.
Second, out of the rainy season, Fuli is not worried about water
This agricultural proverb is not difficult to understand, the ancients found through long-term observation that if it rains on the day of "Chumei", then it indicates that the next dog days will also be dominated by rainy weather.
However, for farmers, they prefer a climate of "rain and heat at the same time", which is conducive to the rapid growth of crops. Therefore, it is desirable to have showers or light rain during this time, rather than heavy rain or torrential rain for several days at once. Because the water in the field, high temperature and humidity are easy to cause floods or pests and diseases, which will bring greater losses to farmers.
Third, the thunder in the summer will change the sky, and it will be hot like the yellow plum rain
The meaning of this agricultural proverb is relatively clear, and from a literal point of view, it basically means that if there is thunder and rain on the day of the summer solar term, then it means that the weather may become humid and muggy again, as if it is back to the rainy season.
Fourth, the rain hit the head of the small summer, and it rained for forty-five days
This agricultural proverb means that if there is rain on the day of the summer season, it indicates that the next 45 days will also be dominated by rainy weather, and even cause heavy floods or floods.
Fifth, out of Meitian tears, Huangmei went back again
In this agricultural proverb, "tears flow" refers to rain, which means that if it rains on the day of "Izumei", it will indicate that the rainy weather will continue to follow, as if it is back to the rainy season.
So, what about the rainy season in the next few days?
From a meteorological point of view, under the combined influence of the southwest monsoon and the subtropical high, the Meiyu belt in the middle and lower reaches of the Yangtze River in mainland China strengthened again. In particular, the hot and humid air currents that are driving in under the subtropical high bring continuous rainfall to these areas, making the rainy season exceptionally long and humid throughout the season.
Generally speaking, this year's plum rain in the middle and lower reaches of the Yangtze River in the Jianghuai River basin not only came violently and lasted for a long time, but also caused a lot of intense weather such as heavy rains, heavy rains, short-term heavy rainfall, thunderstorms and strong winds, which brought a lot of losses to the local people.
According to the traditional saying, on July 6 this year, the "plum blossom" will be "out of the plum" on the day of the summer summer, do you think this year's "out of the plum" will be earlier, or will it be delayed? Looking forward to your comment, thanks for reading.
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