The first round of the cold wave in the Year of the Dragon has begunAt 6 o'clock today (18th), the ** Meteorological Observatory issued an orange warning for cold waves, which is expected from the 18th to the 22ndMost areas of China will experience drastic cooling from west to east and from north to south, and the average temperature will generally drop by 8 12。At the same time, most of our country will experience widespread rain and snow. 
The temperature in many places in the north has dropped by more than 10
Cooling in the south is a close second.
On the 17th, the weather difference between the east and west of China is large, with violent cooling and substantial warming coexisting, and the northern part of Xinjiang is affected by precipitation and strong cold air, and the temperature drop is generally more than 10, and the local temperature is more than 30; The eastern and northeastern regions of Inner Mongolia ushered in a large-scale warming, and most of Heilongjiang, Jilin, and northern Liaoning had a warming range of more than 10. Affected by the cold wave, the cooling range in the north will expand today, including Xinjiang, Inner Mongolia, Qinghai, Gansu and other places will have a violent cooling. Tomorrow, as the cold wave moves eastward and southward, the maximum temperature in Inner Mongolia and most of Northeast China will be below freezing. 
For most of the southern regions, before the main body of the cold wave arrives, the warm air mass will still fight back vigorously three days from today, and the temperature will rise significantly, showing extreme and advanced warmth. Around the 20th, as the cold wave moves south, Jiangnan, South China and other places will also join the cooling ranks. Around the 23rd, the freezing line will be pressed south to the central part of Jiangsu-southern Anhui-northern Jiangxi-southern Hunan-southern Guizhou, and the temperature in the above areas is lower than that of the same period in normal years. It is expected that the temperature in the southern region will slowly rise from the 26th, and it will be low until the end of the month. 
Heavy snowfall in many places in the north
Rainfall and convective weather were evident in the south.
From today to the 22nd, China will encounter a wide range of rain and snow, and many places in the north will encounter heavy snowfall, and the rain and convection in the south will be more obvious, of which the 19th to 21st will be the strongest period of strong convection. 
On February 17, snowfall occurred in Hami, Xinjiang. Specifically, today, there is light to moderate snow or sleet in parts of eastern Inner Mongolia, most of the northeast region, the southern Xinjiang basin, the western and northern parts of Xinjiang, the western part of Qinghai, and Hexi of Gansu, and some areas have heavy to heavy snowfall. There was moderate to heavy rain in parts of the Liaodong Peninsula, northern and southwestern Anhui, central Jiangsu, and eastern Hubei. 
Tomorrow, there will be light to moderate snow or sleet in parts of the eastern part of Northeast China, the southern basin of Xinjiang, the western part of Qinghai, the northern part of Shaanxi, most of Shanxi, the western and southern parts of Hebei, the western and southern parts of Huanghuai, and locally heavy snowfall. 
The Road Network Center of the Ministry of Transport saidAs of 8 o'clock today, affected by snowfall, a total of 54 road sections in Gansu and Xinjiang have been closed, 71 toll stations have been closed, and the resumption time is to be determined
Tips: The public should pay close attention to meteorological information and make travel arrangements in advance to prevent the adverse effects of slippery, icy and low visibility weather on traffic travel.