冷空气来袭大范围降雨将展开 北方降温显著多地迎气温新低

Summary of Key Points Core Viewpoint - A new wave of cold air is expected to bring significant rainfall to northern China, particularly from the Sichuan Basin to the Huanghuai region, starting September 15, with a notable drop in temperatures across many areas [1][2][6]. Group 1: Weather Changes - The arrival of cold air will lead to increased rainfall in northern regions, with significant rainfall expected in the Sichuan Basin and Huanghuai area starting tomorrow [2][3]. - Areas such as Inner Mongolia, Heilongjiang, and parts of Jiangsu and Anhui have already experienced heavy rainfall, with some regions facing severe weather conditions [2][5]. - The Central Meteorological Observatory predicts that many northern areas will experience moderate to heavy rain, with some regions likely to see torrential rain [2][4]. Group 2: Temperature Fluctuations - A significant drop in temperatures is anticipated across northern China, with cities like Hohhot, Yinchuan, and Zhengzhou expected to see their highest temperatures fall below 20°C for the first time since the start of autumn [6]. - In contrast, southern regions, particularly in Jiangnan and South China, will continue to experience high temperatures, with the potential for record-breaking heat in places like Fuzhou [6]. - The temperature drop in northern areas is expected to exceed 10°C, signaling the onset of autumn, while southern regions will maintain higher temperatures for a longer period [6].