Although the Spring Festival holiday has come to an end, the first cold wave of the Year of the Dragon has just begun. Strong cooling, strong winds, dust, thunder and lightning, blizzard, freezing rain, ......As the cold wave continues to move south, all of these weather events will take hold.
As can be seen from the 24-hour temperature change chart, during the day today, the weather in the north and south of our country is very different. The north side is red and purple, which is a violent cooling due to the influence of the cold wave; The fiery red in the south is a rapid rise in temperature under the control of warm and humid airflow, and the maximum temperature at many stations in Hunan, Hubei, Jiangxi and other places today exceeded the extreme value of the same period in February.
Not only that, due to the influence of the cold wave, precipitation in Northeast China, North China and other places increased during the day today, and there was light rain and snow weather; In Xinjiang, Ningxia, Shaanxi and other places, there were also sandstorms. In the face of this situation, I have to say that this weather will set off the sad atmosphere of returning to work after the Workers' Day.
On the first day of rework after the holiday, a drizzle fell on the capital. (Photo: China Weather Network Wang Xiao).
Today, there is dust weather in Xi'an, Shaanxi. (*Xi'an Meteorology).
If these two days of cooling, rain, snow and dust are just the prelude to this cold wave, then in the next few days, the cold wave process will gradually push to a climax.
Climax one. The ultimate transition from warm to cold.
Tomorrow, before the arrival of the main body of the cold wave, under the influence of strong warm and humid airflow, the temperature in some areas south of the Yangtze River will still rise steadily, and the maximum temperature in some places will be close to 30, or even more than 30, showing a rare warm heat in the same period. Subsequently, the arrival of the cold wave is superimposed on the influence of rain and snow, and the temperature in the above areas will decline step by step, along the Yangtze River ** to around 0, and north of South China will drop to single digits, from warm to cold, with great contrast.
After the cooling, it is expected that the maximum temperature from North China to Jiangnan will be more than 6 lower than the same period in history, and more than 10 lower in some areas, and this low temperature will continue until around the Lantern Festival. Therefore, the important things should be said several times, and thick clothes should not be accepted! Don't accept thick clothes! Don't accept thick clothes!
Climax two. Widespread rain and snow with complex phases.
During the southward movement of the cold wave, due to the strong warm and humid airflow encountered, the cold and warm air will confront each other for a long time, which will not only slow down the process of the cold wave, but also bring a round of large-scale rain and snow weather process with complex phases to the central and eastern regions.
Starting on the 20th, the rain and snow will be at their peak. For the southern part of the Huanghuai, Jianghuai, Jianghan, and central and northern parts of the Yangtze River, the initial precipitation is rainfall, which will be accompanied by strong convective weather such as thunderstorms, short-term heavy precipitation, and local hailstorms.
From the 21st to the 24th, the snow line will continue to advance southward, and the above-mentioned areas will gradually turn into sleet or snow, and freezing rain or ice particles will appear in parts of Henan, Anhui, Hubei, Hunan, Guizhou and other places. Among them, the freezing rain in the western and north-central parts of Hunan and the eastern part of Guizhou lasts for a long time, which has a greater impact on the return traffic of the Spring Festival.