From the night of October 2 to the early morning of October 3, many places in Hubei, Hunan, were still hot and difficult to stay up at night, and the minimum temperature at many stations at night was maintained at more than 29 degrees, which was comparable to the peak of mid-summer. Generally speaking, in late autumn under the scorching sun, it is normal to occasionally have high temperatures in the afternoon and afternoon, but the morning and evening autumn coolness is obvious, like this, whether it is day or night, it is hot and difficult, or for the first time. By this afternoon, the high temperature in the south of China has further intensified, and at 15:00 p.m., from the temperature map of the whole point, there has been a high temperature of more than 35 degrees in many places in Hunan, Hubei, Jiangxi, Anhui, and Zhejiang.
For example, as of four o'clock in the afternoon, from the national high temperature ranking of the Central Meteorological Observatory, there is a hot weather of more than 37 degrees in many places in the south of China today, which is not at all like in October.
Among the municipalities directly under the central government and provincial capitals, Chongqing, Wuhan, Hefei and Nanjing all refreshed the october maximum temperature record today, and Changsha has refreshed the october maximum temperature record on October 2, of which Hefei still has a meteorological record since the first time in October, and in addition to the municipality/ provincial capital, more county and city sites have also broken the record. The large areas of record-breaking heat mean that in October, such widespread heat is quite rare.
The real culprit that causes widespread heat is the overly strong subtropical high pressure in the western Pacific. From the 500 hPa weather analysis map at 8:00 a.m. on October 3, today's subtropical high pressure has penetrated deep into most of the south of China, and the northern edge has even advanced to the southern line of Henan - northern Anhui - northern Jiangsu, so today is not only the middle and lower reaches of the Yangtze River hot, but also many places in Henan and Shandong have also begun to experience the dry heat in the air.
When will such a strong subtropical high pressure leave the field? Although there is a cold air in the north that is moving south, and even many places in Xinjiang have snowed heavily in the past two days, from the current forecast, this cold air is almost ineffective for the south, and the high temperature in the south cannot be alleviated. But the good news is that from the current forecast of the Central Meteorological Observatory, the current hot middle and lower reaches of the Yangtze River, after the end of the eleventh long holiday, the temperature began to drop significantly, which means that many places in the south may be hot until the end of the holiday.
But bad news could follow — in the supercomputer's current collective forecasts, huge typhoon lines have been predicted on the South China Sea-East Philippines, densely packed into a pot of porridge, which means that the tropical system in the South China Sea and the ocean east of the Philippines will develop in large quantities, and may usher in one of the most chaotic typhoon activities this year.
For example, the latest forecast of the supercomputer believes that on October 10, there may be a typhoon east of the Philippines and the South China Sea, and there is a trend of being close to the coast of South China, due to the hot weather in South China since the summer and autumn of this year, the sea water in the South China Sea is sufficient, and the South China Sea typhoon may also have the possibility of significant development, which may pose a threat to South China. The emergence of a large number of tropical clouds and even tropical low pressure systems will objectively play a role in attracting cold air to the south. Cold air that has been stagnant for a long time in Siberia and northern China may also accelerate southward under the attraction of typhoons, bringing about a rapid transition between cold and warm. Therefore, although the high temperature in many parts of the south is now record-breaking, it is also necessary to be careful of the combined retaliation of typhoons and cold air in the future.