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].

Core Points - A significant temperature contrast is observed between northern and southern China, with northern regions experiencing a drop in temperature due to cold air and rain, while southern regions continue to experience high temperatures above 35°C [1][5][7] Temperature Trends - Northern regions, including North China and Northeast China, are seeing afternoon temperatures only slightly above 10°C, with some areas like Shijiazhuang expected to reach a maximum of only 11°C, marking a significant drop for early October [1][8] - In contrast, southern regions, particularly Jiangxi and surrounding areas, are forecasted to experience high temperatures for 5 to 7 days, with maximum temperatures potentially reaching 37°C to 39°C, which is unusually high for this time of year [7][8] Rainfall and Weather Patterns - Northern China is expected to be the core area for rainfall, with forecasts indicating heavy rain in regions such as northern Shaanxi, central Shanxi, and parts of Hebei, Beijing, and Tianjin [9][10] - The ongoing rainfall in North China is characterized as unusual for October, with a long duration and significant cumulative rainfall, leading to a damp and cold feeling similar to southern autumn and winter [12] Future Weather Outlook - A warming trend is anticipated in northern regions starting from October 11, as temperatures gradually return to normal levels [12]