Water vapor from the Pacific Ocean is coming. Rainy weather in the north is officially beginning. Supercomputers: Local Snowstorms in Mountain Areas2019-04-25 21:30:58 21 ℃
At noon on April 24, the weather situation in the central and eastern part of China changed dramatically, which was particularly evident on the Fengyun 4 high-definition satellite cloud map. The previous large-scale rainfall cloud system in southern China had shrunk, indicating that the rainstorm had weakened. On the contrary, it can be noted that the northern part of China was covered by a larger rain belt, which indicates that the northern part of China is on the right track. We are experiencing a large area of heavy rainfall.
For example, in Beijing on the North China Plain, a large area of rainfall appeared on April 24, and in some areas it was still heavier. Meteorological monitoring points out that in the three hours from 9:00 a.m. to 12:00 a.m. on April 24, rainfall occurred almost all over Beijing. In some areas, the rainfall in three hours reached more than 10 millimeters, which has reached the middle rainfall level. Such a large-scale rainfall is related to the wet weather in Beijing and other places before. On April 23, water vapor poured into the Pacific Ocean and rushed northward into the North China Plain, which made the water content in the atmosphere of Beijing, Tianjin and Hebei increase rapidly. Today, it began to rain under the infiltration of cold air.
For Beijing, Tianjin, Hebei and even Liaoning, Jilin and other places, the rain is of course a good rain, not only conducive to purifying the air and increasing air humidity, but also as the saying goes, "spring rain is as expensive as oil", which will further alleviate the drought in the north and improve soil moisture. The Central Meteorological Observatory predicts that the rainfall in North China will continue to intensify from April 24 to April 25, and heavy rains are likely to occur in Western and southern Hebei.
In fact, one of the important factors causing this rain is that a cold air is falling south. For many parts of North China, this is a weak cold air. Its advancement will rapidly reduce the temperature of the middle and low altitudes in many parts of North China, so that part of the precipitation falls in the form of snow. According to the prediction of supercomputer, with the cold air, the precipitation falls in the form of snow. As a result, the temperatures in the western and northern mountainous areas of Beijing will drop rapidly. Yanqing and other places may snow during the night from April 24 to April 25. Some high-altitude mountainous areas will also snow heavily, but because of the lower elevation and higher temperature in the urban area, it is unlikely that snow will fall into the urban area of Beijing.
and snow in northern and northwestern Hebei may be greater, especially in the grassland line of Bashang, because of abundant water vapor and strong cold air cooling, rain and snow may fall very heavily. Supercomputers predict that 24-hour precipitation in some areas will probably reach 10 millimeters or even more than 20 millimeters. Converted to snow, it is equivalent to a Blizzard or even a blizzard! However, because of the high daytime temperatures in these areas, there will be mixed rain and snow during the day and pure snow at night, although the total amount of snow may be larger. Therefore, the mountain areas in northern North China should pay attention to the impact of heavy snowfall, and pay special attention to road icing caused by rain and snow.img src="/1ydzximg/0Lp7EiwqDf"/>
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