四九开场今年首场寒潮发货 雨雪冰冻天气逐渐增多

Core Viewpoint - A significant cold wave is set to impact a large part of China, leading to drastic temperature drops and severe weather conditions including rain, snow, and ice from January 17 to 21 [1][2][3] Group 1: Temperature Changes - The cold wave will cause temperatures in the central and eastern regions to drop significantly, with daily maximum temperatures decreasing by around 10°C in areas such as southern Huanghuai, northern Jianghuai, and northern Jianghan [2] - The average or minimum temperatures across most regions will decline by 6 to 12°C, with some areas experiencing drops of 12 to 14°C, and localized decreases exceeding 16°C [2][3] Group 2: Weather Conditions - The cold wave will bring widespread rain and snow, with complex precipitation patterns expected in the regions south of the Qinling-Huaihe line, including rain, snow, and freezing rain [3][5] - Areas such as southern Shaanxi, southern Shanxi, Henan, Shandong, and parts of Hubei and Hunan may experience heavy snow, while freezing rain is anticipated in regions like central Henan and western Hubei [3][5] Group 3: Public Safety and Preparedness - The public is advised to take precautions against the cold and potential health risks associated with respiratory and cardiovascular diseases due to the sudden temperature changes [2] - Authorities recommend monitoring weather alerts and taking measures to ensure safety on roads due to possible ice and slippery conditions [6]