全国大部地区将经历“断崖式”降温，局地降温或超16℃

Core Viewpoint - A significant cold wave is expected to impact most parts of China from December 10 to 13, with temperature drops ranging from 6°C to 10°C, and localized drops exceeding 16°C in some areas [1][3]. Summary by Relevant Sections Temperature Drop - The cold wave will lead to a "cliff-like" temperature drop across most regions, with average temperatures decreasing by 6°C to 10°C [3]. - In specific areas such as northern Xinjiang, eastern Northwest China, and western Jiangnan, temperature drops could reach 12°C to 14°C, with some locations experiencing drops over 16°C [3]. Wind and Weather Conditions - Accompanying the temperature drop, there will be strong northerly winds ranging from level 4 to 6, with gusts in northern regions reaching levels 7 to 9, which will exacerbate the cold feeling [3]. - The cold wave is characterized by a wide range of wind and temperature drops, significant rain and snow in North China, and strong sea-land winds [3]. Snowfall Forecast - Starting from December 11, the cold air will interact with warm moist air, leading to the strongest snowfall of the second half of the year in many northern areas [5]. - Regions such as eastern Northwest China, North China, and central and northern Huanghuai will experience moderate to heavy snow or sleet, with localized heavy snowfall in parts of Shanxi, southern Hebei, and northern Henan [5]. Public Health and Safety Advisory - Experts advise the public in affected areas, including Xinjiang, Shaanxi, Shanxi, Hebei, Beijing, Tianjin, Henan, Shandong, Jilin, and Liaoning, to stay updated on weather forecasts and road conditions to mitigate the impact of snow and low visibility on travel [7]. - The significant temperature drop may lead to health risks such as cardiovascular and respiratory issues, prompting the need for proper health precautions and warmth [7].