Bay of Bengal Storm embryo 92B has developed steadily and has been strengthened to cyclonic storm Sitrang, and will land near the estuary of Ganges in Bangladesh in the early morning of October 25. The so-called cyclone storm is the official name of tropical cyclones in the North Indian Ocean. Just as the tropical cyclone in the northwest Pacific in , the tropical cyclone in the northeast Pacific and the North Atlantic is called hurricane , the relationship between cyclone storms and typhoons is like the relationship between potatoes and potatoes, the relationship between tomatoes and tomatoes, one nature, two names.
Satellite cloud map can be seen that the dense cloud system of West Trunk is entering Bangladesh , India, Nepal , Bhutan and the southern river valley of Tibet in my country, bringing a large range of heavy rainstorms. Not only that, with the cooperation of the southern branch trough, Xitrun will also transport water vapor to climb up the Qinghai-Tibet Plateau , Yunnan-Guizhou Plateau , and even overcome difficulties and obstacles, cross the Tanggula Mountains and Hengduan Mountains, and come to Sichuan, Chongqing, Shaanxi, Hubei, Hunan, and even Anhui, Jiangsu, Shanghai and northern Zhejiang. It can be called the water sender in southern my country.
Because of this, the Yangtze River basin will usher in precious precipitation from head to toe. Although the amount of rain and snow is not large, it is decreasing from west to east. For example, the mountainous areas of Chongqing, Hubei, Hunan may have moderate to heavy rain, and light rain will be achieved when it comes to Jiangsu, Zhejiang and Shanghai, but it is very beneficial to nourish the soil and air.
However, due to the obstruction of many mountains, the water vapor in Sitrang mainly rises on the windward slope of the Qinghai-Tibet Plateau. Because of this, Tibet will be the top priority of this precipitation. While there are heavy rainstorms and heavy rains in South Tibet Valley , there will be heavy snowstorms on the Qinghai-Tibet Plateau, and there is a possibility of locally severe blizzards.
Someone said that it still snowed in Tibet when the typhoon came. Is this normal? This is very normal. First of all, the temperature of troposphere decreases from bottom to top. The middle school textbook tells us that every 1,000 meters rises, it will drop by 6 degrees. It is common for snow to rise up and down the mountains several thousand meters. Secondly, because Indian Ocean is particularly abundant in water vapor, the Qinghai-Tibet Plateau is particularly high, and the windward slope in the southern plateau has always been famous for its huge snowfall. Nyalam is the unsuspecting snow pole in my country. There was once a daily snowfall of 196 mm and a 230 cm snow accumulation, which far exceeds the northeast snow pole.
Therefore, we need to be sober. Although the long-tail cloud system of West Trunk can bring rain to the Yangtze River Basin and other places, this rain is insignificant. Jiangxi, Fujian, Guangxi, Guangdong and other places may even rain, which can hardly alleviate the drought, nor can it substantially raise the water level of the Yangtze River. In this way, 93W of typhoon embryos in the Pacific are very important. Because of the signs, it is likely to strengthen to Typhoon No. 22, and move westward.
As we said before, if typhoon No. 22 enters my country's South China Sea and then heads north at right angles, then the drought in the south is expected to be lifted. But it is very worrying that this Nig may strengthen in advance, thereby breaking through the barrier of subtropical high pressure, turning northward on the east side of the Philippines and not entering the South my country Sea.
In this way, Nig will transform from a water delivery man to a water pump man, sweep away a large amount of water vapor, and almost no one to the arid areas in the south. If you go like this, Nig will also become a bad typhoon. While tropical cyclones in the Pacific and Indian Oceans are active, all northeasterns except Dalian and other places have entered winter. On the morning of October 24, Tuli River -17.7 degrees and Xinlin -16.7 degrees. This reminds us that behind the calm and warm weather, winter is not missing, and the strong cold air is accumulating strength.
