中国北方多地出现破纪录降雨

Core Viewpoint - Northern China is experiencing record-breaking rainfall in October, significantly exceeding historical averages, with multiple regions reporting unprecedented daily rainfall levels [1][2]. Summary by Sections Rainfall Statistics - Since October 1, 67 national meteorological observation stations in Hebei, Shanxi, Inner Mongolia, Qinghai, and Gansu have broken local daily rainfall records for October [1]. - Historical data from 1991 to 2020 indicates that cities like Hohhot, Taiyuan, Beijing, Shijiazhuang, and Jinan typically experience around 5 rainy days in October, with heavy rain days averaging only 0.1 to 0.2. This year, these cities have already surpassed their usual heavy rain days for the entire month [1]. Meteorological Analysis - The prolonged and substantial rainfall in northern China is attributed to an unusually strong subtropical high pressure system positioned further north, combined with active cold air and frequent interactions with warm, moist air currents [1]. Future Rainfall Forecast - The forecast indicates that from October 10 to 13, areas including southern Shaanxi, southern Shanxi, southern Hebei, and northwestern Shandong will be the main regions for heavy rainfall, with some areas expected to receive heavy to torrential rain [2]. - From October 15 to 19, the main rain belt is expected to shift southward, affecting regions such as Henan, Hubei, Anhui, and northern Jiangsu with sustained heavy rainfall [2]. Impact and Precautions - Experts warn that cumulative rainfall in the eastern Northwest, North China, and Huanghuai regions could exceed historical averages by 30% to 70%, with some areas potentially seeing more than double the usual amounts. Public safety measures are advised to mitigate the adverse effects on transportation and agriculture, as well as to prepare for secondary disasters like geological hazards and flash floods in affected areas [2].