Autumn is coming, and at this time cold air gradually becomes the protagonist of the weather stage. The most pronounced cold air since the beginning of autumn is currently affecting the mainland, and much of the central and eastern regions will usher in the coolest morning since the beginning of autumn before this weekend. In addition, typhoons will also be generated? And bring strong wind and rain?
Cold air will affect the lowest temperatures in much of the central and eastern regions
The most obvious cold air since autumn is currently affecting the mainland, and today (October 17) afternoon, Ningxia, northern Shaanxi, central Inner Mongolia and other places have seen a significant cooling.
At the same time, the south is experiencing a wave of warming, with maximum temperatures above 28°C in many places.
In the next few days, cold air will continue to move east and south, and the cold front will cause widespread cooling in the central and eastern parts of the mainland before and after the transit.
Most of the lowest temperatures in the central and eastern regions are on the 20th and 21st, from Heilongjiang to Guangdong and Guangxi, and the lowest temperatures in most areas are likely to set a new low since the beginning of autumn this year, ushering in the coolest morning.
The arrival of cold air will also create precipitation, and from tonight to tomorrow, rain will fall in parts of southern Shaanxi, Shanxi, Beijing-Tianjin-Hebei, Henan, Shandong, Liaoning, Jilin and other places. On the 19th and 20th, the rainfall will further advance to many places south of the Huai River.
Pay attention to temperature changes and add clothes in time to avoid catching colds.
Typhoons may spawn! Storm in South China
At present, there is an active tropical depression in the South China Sea, which has large wind shear on the north and south sides of this tropical depression, and the SST conditions are acceptable, which may develop into this year's No. 16 typhoon.
In fact, there are not many typhoons generated so far this year, and the average number of typhoons generated in a year is about 25 a year, and the number of typhoons generated this year is significantly small. In addition, an average of 3.7 typhoons are generated in October, and typhoons in October are not abnormal.
Whether or not it strengthens into a typhoon, this tropical low-value system will "send water" to southern China. It is expected that from the night of the 17th to the 20th, there will be moderate to heavy rain in most parts of Hainan Island, most of Guangdong, southeastern Guangxi, southern Fujian and other places, and local heavy rain to heavy rain.
For example, the day after tomorrow, there will be heavy rain to heavy rain in southern Guangxi, southern Guangdong, eastern Hainan Island and other places.
At the same time, there are 6~8 level winds and gusts of 9 in the Taiwan Strait, Bus Strait, the northern and central and western waters of the South China Sea, the Beibu Gulf, and the Qiongzhou Strait.
Later, as cold air moves south, this tropical low system will be greatly weakened, and the path may turn a big turn. Due to the long timeliness, everyone should also pay attention to the nowcasting forecast.
Source: CCTV News