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△ National Heavy Rainfall Area Forecast Map (Central Meteorological Observatory/Fa)
People's Voice of the World, April 21, Beijing Express In the blink of an eye, the traditional 24 solar terms of the "valley rain" have arrived. In the opinion of experts, as the warm and humid airflow moves northward in waves, when it encounters cold air from the south, it will cause frequent rainfall in the south. In the northern region, there will also be a large-scale rainfall process from west to east from the 18th to the 20th. Whether it is in the north or south, the temperature mostly shows a trend of high and then low.
△ National precipitation TOP20 live map (Central Meteorological Observatory/Fa)
Experts said that the monitoring data shows that from yesterday (20th) to this morning (21st), there were patches of heavy rainfall in Guangdong and Guangxi, and this should also be the largest round of heavy rainfall since the flood this year (2024). Among them, the rainfall of some meteorological observation stations in Guangdong and Guangxi (*one day is cut off at 08 o'clock) broke the single-day record in April, such as Huaiji, Deqing, Sanshui, Xinxing, Foshan (Nanhai), Yunan, Fengkai, Gaoyao, Luoding, Longwei, Wuzhou and Jinxiu in Guangxi. Moreover, Huaiji's 214.5 mm also broke the single-day record in the entire local observation history.
△Numerical model forecast of regional precipitation extreme index (European Meteorological Center EC/development)
According to experts, the Central Meteorological Observatory continued to issue an orange warning for heavy rain this morning. The Central Meteorological Observatory predicts that from 08:00 on April 21 to 08:00 on the 22nd, there will be heavy to heavy rain in the central, eastern and southern parts of Jiangnan, the central, eastern and southern parts of South China, among them, there will be heavy rain (100~200 mm) in some areas of central and southern Guangdong. Today there is a low vortex shear line at low altitude over the southern region, and heavy rainfall near and south of the shear line. Judging from today's precipitation extreme index numerical model forecast, the local rainfall in Guangdong cannot be ruled out to break the record.
△National Severe Convective Weather Forecast (Central Meteorological Observatory/Fa)
Industry insiders stressed that it is not difficult to find that the situation is also not difficult to find, as experts say, from the six-hour rainfall forecast, it can be seen that the heavy rainfall belt is slowly moving eastward. It is relatively strong during the day, weakens in the first half of the night, and may strengthen again in the Pearl River Delta region in the second half of the night. In the two days after tomorrow (22nd-23rd), the cold air will push the rainfall area to move to the east and south, and the rainfall in the south of the Yangtze River will decrease significantly, but there will be heavy rainfall in the eastern part of Guangdong and the southern part of Fujian. (Editor-in-charge/Xiangyu)
*Editor's Note:
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