Winter weather forecast in Shandong province
This year's cold wave weather covers a wide range, involving two aspects: on the one hand, the cold air that generally harms China comes from western Siberia, and this time it is the same, that is, this auxiliary siege. The cold air from the Arctic immediately went south, resulting in unusually large cold air energy in central and western Siberia. On the other hand, the atmospheric circulation in Eurasia has changed recently, obviously moving from north to south, and the cold air in the Arctic has been moving south, filling western Siberia. Therefore, cold air gradually started from Xinjiang, moving from west to east and from west to east, which seriously affected many areas in China. It will also cross the reborn Qinling Mountains and Nanling Mountains to the south.
The cooling range caused by the cold current is particularly large. On the one hand, cold air is powerful; On the other hand, after the whole process of strong cold air in the middle and late June of 10, the theme activity of cold air was weak. The initial ambient temperature in many places is very high. Before the arrival of cold air, the ambient temperature will rise, resulting in a very large temperature difference. You will feel that the temperature drop is very obvious. Be sure to be fully prepared and put on clothes to keep warm at once. In addition, when cold air bodies appear, warm air is abundant in the middle and lower layers in Northeast China, North China and Huanghuai areas, and the meteorological elements of gas environmental pollution diffusion are relatively weak. We should pay attention to the influence of smog in Beijing, Tianjin and Hebei on our health.
Why has it snowed for so long in many parts of our country? This is because cold air and hot air are mixed together. There is a large-scale rain and snow weather process from west to northeast. It will appear in the northwest eastern region, Inner Mongolia, North China and parts of Northeast China. It is not easy to snow in many places in North China except southern Hebei. Most of them have to rain first, and then slowly turn into snow. It snows in parts of eastern and northeastern Inner Mongolia. Everyone should pay attention to the adverse effects of snow.
Recently, most areas in southern Jilin, Liaoning, Hebei, Beijing, Tianjin, Shaanxi and Shanxi are about to usher in the first obvious snowfall in the second half of this year. The masses need to listen to the weather forecast and early warning reminder issued by the local meteorological bureau in time to allocate production and business activities.
Earlier, the National Climate Center said that this winter will produce a weak to moderate intensity La Nina phenomenon. In winter, when most La Nina phenomena reach the highest level, the theme activities of cold air bodies that endanger China are more frequent and obvious than usual. For the La Nina event in autumn and winter in 2020-202 1, 202 1 is undoubtedly a "double La Nina year" and a "double hazard year".
The weather forecast shows that the cold air activities that harm China in winter are frequent and obvious, and the temperature in the Middle East is generally dark. Among them, the temperature in Liaoning, Inner Mongolia, Beijing, Tianjin, Hebei, Shanxi, northwestern Shaanxi, northern Henan, Shandong and northern Xinjiang dropped 1℃-2℃.
The basic concept of cool winter is different. Cold means that the average temperature becomes lower or higher, but there are strict norms in cold winter. The important factor to distinguish the cold weather in winter is the average temperature in winter for three months, which can be divided into three levels in mid-air: single station, regional and China.
Cold winter should be a comprehensive evaluation, analysis and judgment of winter weather. It is expected that the temperature will be low this year, but whether it will be cold in winter depends on the specifications.