寒潮南下，多地迎初雪

Core Points - A significant cold wave is affecting multiple regions in China, leading to the first snowfall of the winter season in several provinces [1][5] - The Central Meteorological Observatory has issued a blue alert for the cold wave, predicting further temperature drops and additional cold air impacts in the coming week [3][8] Temperature Changes - Average or minimum temperatures in northern and central eastern regions have dropped by 6°C to 10°C, with some areas experiencing drops exceeding 14°C [3][7] - Specific regions such as Chongqing, western Hubei, eastern Jiangsu, and northern Guangxi are expected to see temperature declines of 10°C to 12°C, while some areas in southern Anhui and northwestern Zhejiang may exceed 14°C [7][9] Weather Conditions - Rain and snow have been reported in various areas, including light to moderate snow in regions like Inner Mongolia, Heilongjiang, and parts of Shaanxi and Henan [4][5] - The cold wave is expected to bring additional precipitation, with forecasts indicating small to moderate snow or sleet in several areas [4][8] Future Weather Predictions - The cold wave is anticipated to last until at least November 19, with further cold air expected to impact the regions afterward [8][10] - A subsequent cold air mass is predicted to bring additional temperature drops of 4°C to 6°C in northern regions, with localized drops of 8°C to 10°C [9][10]