寒潮蓝色预警持续 中东部地区迎来大范围雨雪天气

Group 1 - A cold wave is affecting China, with a blue alert issued by the Central Meteorological Observatory, leading to a temperature drop of 6-12°C across central and eastern regions from the 18th to the 21st [1] - Some areas in the Huanghuai South, Jianghuai West, Jianghan East, Jiangnan Central and Western, eastern Guizhou, and northern Guangxi may experience temperature drops of 12-14°C, with localized drops exceeding 16°C [1] Group 2 - The cold wave is causing the most extensive rain, snow, and freezing weather process this winter in central and eastern regions, with light snow or sleet expected in various areas including Tibet, Inner Mongolia, Heilongjiang, Jilin, Beijing, Tianjin, Shandong, Henan, and Shaanxi [2] - In Beijing, snowfall began yesterday, with an average accumulation of 0.6 mm and a maximum of 6 mm in Fangshan District, expected to weaken and end by this afternoon [3] - Tianjin experienced its first snowfall of the year, with the city issuing a yellow alert for road icing, and snow levels reaching small to moderate [4][8] Group 3 - In Hebei, most areas are experiencing snowfall, with temperatures dropping to -11°C, and significant accumulation reported in Zhuozhou with 3.1 mm of precipitation and 4 cm of snow depth [9] - The Jinggang'ao Expressway in Zhuozhou has restricted certain vehicles due to snow, and multiple highways are facing traffic disruptions due to the weather [11]