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Central Meteorological Observatory: Precautions need to be strengthened during the peak precipitation period in the middle and lower reaches of the Yangtze River |
China News Agency, Beijing, August 13 (Reporter Chen Su) In the past week, the southern part of China has been raining continuously. The Central Meteorological Observatory issued a forecast on the 13th that there will be more rain in the south in the coming week. On the same day, Chen Tao, chief forecaster of the Central Meteorological Observatory, said in an interview with reporters that the recent rainfall in the south has shown the characteristics of “continuous, wide-ranging, and strong points”, and that the middle and lower reaches of the Yangtze River are facing the strongest period of precipitation, and it is necessary to strengthen prevention.
This round of southern rainfall has continued since the 9th. On the 12th, heavy rainfall occurred in the east of Southwest China to the middle and lower reaches of the Yangtze River. Heavy rains occurred in parts of Yunnan, Sichuan, Chongqing, Hunan, Hubei, Anhui, Zhejiang and other places. Among them, Hubei There was a heavy rainstorm (268.2 mm) in the Xiaogan area. On the 13th, the Central Meteorological Observatory continued to issue a yellow rainstorm warning. It is expected that there will be heavy rain in parts of Jianghuai, eastern Jianghan, northern and western Jiangnan, southeastern Southwest, and northern South China.
The continuous rainfall has made many people feel that the “mei rainy season” is coming back. Talking about the recent continuous heavy rainfall in the south, Chen Tao said that the current rainfall process has a certain relationship with the adjustment of atmospheric circulation. The current position of the subtropical high is obviously deviated from the previous period. In the south, the warm and humid air at the edge of the subtropical high has the same force as the cold air in the mid-latitudes, and continues to converge in the middle and lower reaches of the Yangtze River. The weather situation characteristics are similar to the Meiyu weather.
Chen Tao said that the impact of this rainfall is far beyond the middle and lower reaches of the Yangtze River, and the rainfall in Chongqing, Yunnan, Guizhou and other places cannot be ignored. “This is a large-scale rainy weather process. The main rain has a slow southward trend. The eastern part of the southwestern region, Jianghan, Jianghuai, and the northern central and northern parts of Jiangnan are all affected by it.”
Chen Tao also stated that the slow movement of rainbands due to the relative strength of the cold and warm air, coupled with abundant water vapor, unstable convection, and sufficient energy, the local short-term heavy rainfall has obvious characteristics. From the 11th to the 12th, heavy rainstorms occurred in Yicheng, Hubei and Haiyan, Zhejiang.Local sites appearextremeRainfall is relatively abnormal compared to the same period in normal years.
The Meteorological Department predicts that during this rainfall process, the accumulated precipitation in parts of the middle and lower reaches of the Yangtze River may reach 100 mm to 200 mm, and the local area may exceed 300 mm. The water level in the upper reaches of the Yangtze River is currently at a high level, and the water level in the Taihu Lake Basin has exceeded the alarm. From the 16th to the 18th, there will be a new round of rainfall process in Jianghan, Jianghuai and northern Jiangnan, which has a certain superimposing effect with this process.
Chen Tao said that continuous rainfall has caused soil water content to be saturated, and it is necessary to strengthen the prevention of geological disasters induced by continuous heavy rainfall and the risks of meteorological disasters in small and medium-sized rivers. The public can pay attention to the latest rainstorm warning and weather disaster risk impact forecast at any time, and focus on understanding urban waterlogging and road flooding meteorological disaster risk related information, and evacuate in time or avoid going to areas with high incidence of geological disasters. (Finish)
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