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△National precipitation forecast map (Central Meteorological Observatory/Fa)
People's Voice of the World, April 25, Beijing Express In the blink of an eye, the traditional 24 solar terms of "Gu Yu" have arrived. This week's (April 22-28) national weather stage, experts believe that cold and warm air is still active, during which the trough from Lake Baikal to Mongolia will continue to throw out cold air, and at the same time, the warm and moist air flow north of the subtropical high will continue to move north. As a result, it will remain rainy in the south during the week. And under the warm and humid air flow pulse, there are also obvious rainfall and convection processes. The temperature in the north is fluctuating, and it may drop significantly after hitting a new high from the 25th to the 26th. In addition, along with the activity of cold air, there may also be wind-blown sand in the north.
△ National Thunderstorm Gale or Hail Forecast (Central Meteorological Observatory/Fa)
Experts said that according to the analysis of the latest meteorological data, there is a possibility of rain in Beijing from the 26th to the 27th, but there is no guarantee that it will rain in the whole city, and during this period, it may be scattered thundershowers. Combined with the comprehensive forecast of meteorological elements in Beijing, it can be seen that if there is rain, it will be accompanied by thunder and lightning.
△National precipitation forecast map (Central Meteorological Observatory/Fa)
According to experts, the favorable conditions for precipitation in Beijing on the 26th are relatively strong upward momentum, and the unfavorable factor is the lack of low-altitude water vapor. For a long time, the water vapor is not enough, and the power comes to make up, and such a hard "squeezing" may also bring precipitation. On the 27th, there was more low-altitude water vapor in Beijing, and although the dynamic uplift was slightly weaker than on the 26th, the probability of precipitation would be greater.
△National Severe Convective Weather Outlook (Central Meteorological Observatory/Fa)
According to the analysis of experts, according to the superposition of precipitation in North China from the evening of the 25th to the 26th, the numerical model forecast of the tripartite meteorological agencies in China, Europe and the United States shows that there is a southwest wind turning to a southeast wind at low altitude, forming a warm shear, which may trigger convective rainfall. But the circulation of 500 hPa is straight, and if there is a trough, this rain is proper.
△National precipitation forecast map (Central Meteorological Observatory/Fa)
Industry insiders emphasized that it is not difficult to find that it is not difficult to find that as experts say, from the tripartite numerical model forecast from the evening of the 26th to the 27th in North China, some cold air in the north is moving south, and there is a convergence of northerly and southerly winds in Beijing, which may also lead to rainfall. But again, the 500 hPa circulation is straight, and if there is a clear trough, the rain will be loud. (Editor-in-charge/Xiangyu)
*Editor's Note:
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