China Weather Network News Today (November 4), the China Meteorological Administration held a press conference in November, it is expected that this winter China's cold air activities are frequent, cold and warm fluctuations are large, the central and eastern regions are generally cold, and the overall precipitation in the country is more north and south. In the next ten days, there will be two cold air processes, of which there will be early snow in the second half of this year around this weekend in parts of Beijing-Tianjin-Hebei, Jilin, Liaoning, central and southern Shaanxi, accompanied by high winds to cool down, and it is necessary to pay attention to prevention.
This winter's cold air fluctuates frequently and warmly The possibility of a national cold winter is less likely
The picture shows the scene of the press conference.
According to Zhao Huiqiang, deputy director of the office of the China Meteorological Administration, this winter (December 2021 to February 2022), the cold air activities affecting China are frequent, the force is strong, the cold and warm fluctuations during the season are large, the temperature in the central and eastern regions is generally cold, and the precipitation is generally distributed in the north and south. However, the cold temperature in most of the central and eastern parts is not equal to cold winter, Jia Xiaolong, deputy director of the National Climate Center, introduced that "cold winter" has strict standards, according to the national standards of "Cold Winter Grade" released in May 2017, the basic elements of cold winter are the average temperature of three months of winter, if the cold winter area exceeds 50% of the national effective area, it is defined as a national cold winter. Nationally, there is less chance of a national cold winter this year.
Among them, in November this year, the temperature in the central and northern parts of the eastern and northeastern regions of Inner Mongolia, Tibet and the western part of the southwest region was higher than that of the same period of the year; the temperature in most parts of the country was close to the same period of the year to low. In terms of precipitation, there is more precipitation in the northeast of Inner Mongolia, the northern and central parts of the northeast region, most of Jiangnan, the northwestern part of south China, most of the southwest region, eastern Tibet, southern Qinghai, and northern Xinjiang, of which the central and western parts of Jiangnan and the southern part of the southwest region are more than 20% to 50% more; the precipitation in the rest of the country is close to the same period of the year to less, of which most of the Huanghuai, western and southern Xinjiang are 20% to 50% less.
The two cold air processes in the next ten days will affect China's Beijing-Tianjin-Hebei and other places or the early snow in the second half of the year
In the next ten days (November 5 to 14), there will be more precipitation in North China, Northeast China, Jiangnan and other places, and the cumulative precipitation in eastern Jianghuai, most of Jiangnan, northern South China and eastern Guizhou will be 20 to 40 mm, and some areas will be 50 to 70 mm; the precipitation in eastern North China, Northeast China, and eastern Huanghuai will be 10 to 25 mm, and the local precipitation will be 30 to 50 mm; most of the above areas will be more than the same period of the year, of which the north-central and northeastern parts of North China will be more than 1 times more. Precipitation in local areas will be close to historical extremes.
At the same time, the temperature in most parts of China is lower than usual, except for the average temperature in the northeast of Inner Mongolia and the northern part of the northeast region that is 1 to 2 °C higher than that of the same period of the year, and the temperature in most parts of China is 2 to 4 °C lower. Among them, from the 5th to the 8th of the first period, the temperature in northern North China, the southern part of Northeast China, the southeastern part of Northwest China, the Sichuan Basin and the central and eastern parts of Jiangnan will be close to the lowest in the same period of history, and some areas will be lower than the historical extremes in the same period.
During the period, two major weather processes affect China, November 5 to 8, the cold wave weather will affect most of China from west to east from north to south, the average temperature will generally drop by 8 to 10 ° C, some of the decline can reach 12 ~ 15 ° C, locally more than 16 ° C, some areas are accompanied by 5 to 6 northerly winds, gusts can reach 7 to 9 grades; the eastern part of the northwest region, north central and western North China and the northeast region have small to moderate snow or sleet, and some areas have large to blizzard, according to Xue Jianjun, deputy director of the National Meteorological Center, Jilin, Parts of Liaoning, northern Hebei, Beijing, Tianjin, southern Shanxi, and south-central Shaanxi will experience the first significant snowfall (or sleet) since the second half of the year; there will be light to moderate rain in southern and southern Parts of North China, heavy to heavy rain in central and southern Jiangnan and northern South China; from 7 to 8, there will be 7-9 gales in the eastern sea area, and gusts in the northern Bohai Sea and the Yellow Sea can reach more than 10 levels.
Around November 13, due to the influence of another cold air, the average temperature of the Yangtze River and its northern regions will generally drop by 4 to 8 °C, and the local cooling in North China and Northeast China will reach more than 10 °C; some areas will be accompanied by 4 to 6 northerly winds.
Meteorological experts remind that northern Xinjiang, eastern Inner Mongolia, northeast China and some parts of the northwest are affected by cold air, and there will be a staged low-temperature rain and snow process, which needs to be prevented from adversely affecting transportation and people's production and life. Snow disasters and strong cooling weather may occur in pastoral areas in northern Xinjiang, and animal husbandry production needs to do a good job in cold and warmth, windproof reinforcement and other work. At present, there are not many leaves falling in Beijing, Tianjin and Hebei, and it is necessary to prevent snow from breaking trees and causing harm.
Most of Jiangnan and the eastern part of the southwest region have low temperatures and heavy precipitation in November, and it is necessary to guard against the adverse impact of low temperature and rainy weather on agricultural production and transportation. South China in Jiangnan should seize the good weather to harvest mature late rice in time, the late rice harvest in the central and western parts of Jiangnan and northwest China should pay attention to avoiding rainy periods, and Jianghuai, Jianghan and southwestern regions should take advantage of the timely sowing of winter wheat. All localities should also strengthen the construction of water conservancy facilities in farmland and pay attention to water storage and drought prevention.
In addition, during the intermittent period of cold air, there are stages of fog and haze in North China, Huanghuai and other places. Beijing-Tianjin-Hebei and surrounding areas, Fenwei Plain, Huanghuai and other places need to guard against the adverse effects of fog and haze on human health and transportation.
Source: China Weather Network